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Contents
- The climate of Saint George
- The best time to visit Saint George
- The worst time to visit Saint George
- Spring weather in Saint George
- Summer weather in Saint George
- Autumn weather in Saint George
- Winter weather in Saint George
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Saint George
Geographically positioned in the southwestern part of Utah, USA, Saint George sits comfortably within the mid-latitude steppe which forms a part of the Köppen climate classification BSk. A year-round observation of the climatological parameters shows a varied combination of temperatures, humidity, rainfall, snowfall, daylight, sun, UV Index, visibility, cloud percentage, pressure, and wind speed.
The range of temperatures throughout the year spans broadly from a low of 31.6°F (-0.2°C) in December to an intense high of 93.9°F (34.4°C) in July. Typically, the humidity levels vary between an annual low of 18% in June and a peak of 59% seen in January. Rainfall is relatively distributed unevenly over the year, with an observed high of 0.98" (25mm) in March. However, a minimal number of rainy days are recorded with the maximum being 8.3 days in March. Snowfall is almost non-existent with token measures of 0.16" (4mm) and 0.08" (2mm) in December and November respectively.
Daylight hours naturally amplify from a low of 9.7 hours in December to a radiant high of 14.7 hours in June. On the other hand, the measurement of sunshine differs only marginally from 7 hours in January to 11.9 hours in both June and July. The UV Index oscillates between a winter low of 2 in December to a peak of 7 in the summer months from June to August. Visibility remains consistently at 6 miles throughout the year. Cloud content shows minimal fluctuation as well, with just a difference of 9% between the lowest in June and the highest in December. Pressure levels show marginal variance hovering around the high 29s inches. Wind speed remains fairly constant between 5.3mph (8.5km/h) and 7.3mph (11.7km/h), with gusts reaching up to 11mph (17.7km/h) in April.
The range of temperatures throughout the year spans broadly from a low of 31.6°F (-0.2°C) in December to an intense high of 93.9°F (34.4°C) in July. Typically, the humidity levels vary between an annual low of 18% in June and a peak of 59% seen in January. Rainfall is relatively distributed unevenly over the year, with an observed high of 0.98" (25mm) in March. However, a minimal number of rainy days are recorded with the maximum being 8.3 days in March. Snowfall is almost non-existent with token measures of 0.16" (4mm) and 0.08" (2mm) in December and November respectively.
Daylight hours naturally amplify from a low of 9.7 hours in December to a radiant high of 14.7 hours in June. On the other hand, the measurement of sunshine differs only marginally from 7 hours in January to 11.9 hours in both June and July. The UV Index oscillates between a winter low of 2 in December to a peak of 7 in the summer months from June to August. Visibility remains consistently at 6 miles throughout the year. Cloud content shows minimal fluctuation as well, with just a difference of 9% between the lowest in June and the highest in December. Pressure levels show marginal variance hovering around the high 29s inches. Wind speed remains fairly constant between 5.3mph (8.5km/h) and 7.3mph (11.7km/h), with gusts reaching up to 11mph (17.7km/h) in April.
The best time to visit Saint George
A thoughtful analysis of the climatological data recommends the period from April to June as the most pleasant time to visit Saint George. During these months, temperatures are moderate, hovering between a comfortable 68.4°F (20.2°C) to 90.1°F (32.3°C). Daylight is ample, extending up to 14.7 hours in June. There is a high chance of experiencing clear skies as humidity is low ranging between 31% to 18%, and cloud content is at a mere 6% in June. The UV Index, although at a slightly high level of 6 or 7, is unlikely to be a deterrent for outdoor activities considering the low humidity and cloud percentage.
The worst time to visit Saint George
Travel plans to Saint George in the months of November and December might prove to be less favourable due to the low temperatures, that can drop to 40.3°F (4.6°C) and 31.6°F (-0.2°C) respectively. Daylight hours also fade down to just above 10 hours, restricting the available time for sightseeing or outdoor activities.
Spring weather in Saint George
Spring in Saint George runs from March to May with temperatures ranging from 60.6°F (15.9°C) to 77.4°F (25.2°C), creating a comfortable environment. There is a notable increase in daylight hours from 12 hours in March to 14.2 hours in May. Rainfall remains relatively low and humidity drops from 41% to 26% over the course of these spring months.
Summer weather in Saint George
June through August marks the summer period in Saint George. These months experience temperatures that see an elevate from 90.1°F (32.3°C) to 93.9°F (34.4°C) in July before a slight dip to 92.3°F (33.5°C) in August. Daylight is ample with 14.7 hours in June descending to 13.5 hours in August. However, this is the driest period of the year, with humidity dropping to an annual low of 18% and minimal rainfall.
Autumn weather in Saint George
When autumn comes in September through November, temperatures see a downward trend, decreasing from 85.1°F (29.5°C) to 59.2°F (15.1°C). The daylight hours dwindle too, from 12.4 hours in September down to 10.2 hours in November. Despite the decline in temperatures, the weather remains largely dry with relatively low rainfall and humidity levels.
Winter weather in Saint George
Winter in Saint George which spans from December to February, experiences the coldest temperatures of the year, falling from 47.7°F (8.7°C) in December to a chilly 32.5°F (0.3°C) in February. Daylight hours are at their lowest, between 9.7 hours to 10.9 hours. Although winter is relatively dry, Saint George receives minimal snowfall during this season, with just 0.16" (4mm) of snow recorded in December and February respectively.
Weather in January
Transitioning from the chill of December, January in Saint George, Utah presents a cold onset to the year. The average high and low temperatures are 49.1°F (9.5°C) and 32.5°F (0.3°C) respectively, marking it as one of the cooler months in the area. Weather in January »
Weather in February
Shifting from the cold January, February persists with cool temperatures, though slightly warmer. The weather maintains relative humidity of 53% with a slightly lower atmospheric pressure at 30.07 in. Snowfall continues albeit at a lesser volume than the preceding month. Weather in February »
Weather in March
As winter fades into spring, March delivers a surge in temperature while maintaining a relatively low level of humidity at 41%. The most significant change is the absence of snowfall, marking the conclusion of winter in Saint George. Weather in March »
Weather in April
April confirms the full swing of spring in Saint George with temperatures soaring up to 68.4°F (20.2°C) from a minimum of 46.9°F (8.3°C). The weather conditions remain moderately humid at 31%, promoting a suitable environment for spring blossoms. Weather in April »
Weather in May
May is the stepping stone to summer in Saint George as temperatures continue to loft. The city experiences a dip in humidity levels to 26% and a record-low monthly rainfall of just 0.28" (7mm). The city's inhabitants start to feel the heat as daylight hours reach their first high of the year, clocking at 14.2 hours. In Saint George, the average high-temperature in May rises, from an agreeable 68.4°F (20.2°C) in April, to a warm 77.4°F (25.2°C). Weather in May »
Weather in June
June is the doorway to summer with temperatures reaching a record-high average of 90.1°F (32.3°C). The noticeable increase in temperature offers a clear contrast from the cooler months of the year. Despite being the driest month with only 18% humidity, June ensures a happy suntan with a high UV index of 7. Weather in June »
Weather in July
July sees the peak of summer in Saint George with temperatures peaking at a scorching 93.9°F (34.4°C). The climatic conditions are accentuated by an increasing trend in rainfall, signaling the start of the monsoons. This is also the month when the city basks in maximum sunlight, with daylight hours reaching the highest at around 14.4 hours. July is the month when Saint George experiences its warmest temperatures, averaging a high of 93.9°F (34.4°C) and a low of 72.3°F (22.4°C). Weather in July »
Weather in August
August carries forward the heat of July with high temperatures slightly dropping to 92.3°F (33.5°C). The city's weather is generally hot and humid, with a noticeable increase in rainfall. This period continues to be hot and humid as the aftermath of the moisture-laden monsoon winds becomes predominant. The advent of August denotes an average high-temperature of a still tropical 92.3°F (33.5°C), subtly different from July's 93.9°F (34.4°C). Weather in August »
Weather in September
September experiences a drop in temperature, marking the onset of fall in Saint George. The weather characteristics associated with high temperatures begin to tone down, giving way to mildly warm days and much cooler nights. It's also the phase which brings back the breeze, post the hot and high-temperature summer. A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a hot 92.3°F (33.5°C) to a warm 85.1°F (29.5°C). Weather in September »
Weather in October
October symbolizes the mid-fall season in Saint George, characterized by further decrease in temperatures. The change in season results in increased humidity and less daylight hours, marking the approach of winter. Enjoying the fall colors while preparing for the impending winter becomes a usual sight in the beautiful city. October in Saint George is marked by a distinct decrease in the average high-temperature, falling from a warm 85.1°F (29.5°C) in September to a pleasant 70.7°F (21.5°C). Weather in October »
Weather in November
November brings a marked change in weather in Saint George as the city moves into the winter. A huge drop in temperatures to as low as 40.3°F (4.6°C) is noted, alongside a rise in the humidity levels to 42%. The end of fall and the start of winter is palpable as the daylight hours reduce drastically to about 10.2 hours. November's onset brings a slight change in high-temperatures, falling from an agreeable 70.7°F (21.5°C) in October to a moderate 59.2°F (15.1°C). Weather in November »
Weather in December
Wrapping up the year, December marks the full swing of winter in Saint George. Notably, the harshness of winter is felt with a low temperature of 31.6°F (-0.2°C) and a heightened level of humidity at 57%. With winter reaching its peak, the year concludes on a cold note with chances of snowfall reinstating itself. Saint George's coldest temperatures are experienced in December, with average high temperatures of 47.7°F (8.7°C) and lows of 31.6°F (-0.2°C). Weather in December »
Updated: Jul 7, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the most humid month?
January is the most humid month, with an average relative humidity of 59%.
How many days does it rain in Saint George?
In Saint George, during the entire year, the rain falls for 66.6 days and collects up to 6.97" (177mm) of precipitation.
When does it snow?
Months with snowfall are January, February, November and December.
How much does it snow?
In Saint George, Utah, during the entire year, snow falls for 2.4 days and aggregates up to 0.59" (15mm) of snow.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 0.7 days and typically aggregates up to 0.2" (5mm) of snow.
What is the rainiest month?
March is the month with the most rainfall. Rain falls for 8.3 days and accumulates 0.98" (25mm) of precipitation.
When it does not snow?
March through October are months without snowfall.
When is Daylight Saving Time (DST) in Saint George?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
What is the least humid month?
June is the least humid month, with an average relative humidity of 18%.
What is the driest month?
June is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.12" (3mm) of precipitation.
When are the longest days in Saint George?
June has the longest days of the year, with an average of 14h and 42min of daylight.
What is the month with the most sunshine?
The months with the most sunshine are June and July, with an average of 11.9h of sunshine.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 7, are months with the highest UV index.
What month is the hottest?
The month of July, characterized by an average high of 93.9°F (34.4°C) and a low of 72.3°F (22.4°C), is recognized as the warmest in Saint George.
What is the coldest time of year?
In Saint George, December registers the lowest temperatures, averaging 47.7°F (8.7°C) at the peak and 31.6°F (-0.2°C) at the lowest.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 42min of daylight.
What is the month with the least sunshine in Saint George?
The month with the least sunshine is December, with an average of 7h of sunshine.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 2.
Average temperature
Saint George, UT
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (47.7°F).
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is December (31.6°F).
Average pressure
Saint George, UT
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.9"Hg - Average pressure in May:
29.85"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Saint George, UT
- Average wind speed in January:
5.5mph - Average wind speed in February:
5.6mph - Average wind speed in March:
6.5mph - Average wind speed in April:
7.3mph - Average wind speed in May:
7.1mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.6mph - Average wind speed in October:
5.8mph - Average wind speed in November:
5.4mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and December (5.3mph).
Average humidity
Saint George, UT
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).
Average rainfall
Saint George, UT
- Average rainfall in January:
0.71" - Average rainfall in February:
0.83" - Average rainfall in March:
0.98" - Average rainfall in April:
0.43" - Average rainfall in May:
0.28" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.59" - Average rainfall in August:
0.55" - Average rainfall in September:
0.35" - Average rainfall in October:
0.35" - Average rainfall in November:
0.83" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days
Saint George, UT
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
6.8 days - Average rainfall days in May:
4.5 days - Average rainfall days in June:
1.8 days
- Average rainfall days in July:
7.8 days - Average rainfall days in August:
5.4 days - Average rainfall days in September:
4.9 days - Average rainfall days in October:
4.1 days - Average rainfall days in November:
4.3 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall
Saint George, UT
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days
Saint George, UT
- Average snowfall days in January:
0.5 days - Average snowfall days in February:
0.7 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
0.8 days
The month with the highest number of snowfall days is December (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Saint George, UT
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
7h and 1min - Average sunshine in February:
9h and 1min - Average sunshine in March:
9h and 0min - Average sunshine in April:
10h and 2min - Average sunshine in May:
11h and 4min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 3min - Average sunshine in September:
9h and 5min - Average sunshine in October:
8h and 2min - Average sunshine in November:
7h and 2min - Average sunshine in December:
7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days
Saint George, UT
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
20.7 days - Average sunshine days in March:
21.5 days - Average sunshine days in April:
22.1 days - Average sunshine days in May:
24 days - Average sunshine days in June:
26.3 days
- Average sunshine days in July:
17.9 days - Average sunshine days in August:
19.8 days - Average sunshine days in September:
21.5 days - Average sunshine days in October:
24.9 days - Average sunshine days in November:
24.3 days - Average sunshine days in December:
22.8 days
The month with the most sunshine days is June (26.3 days).
The month with the least sunshine days is July (17.9 days).
Average UV index
Saint George, UT
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Saint George, UT
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility
Saint George, UT
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint George, Utah, USA
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