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Contents
- 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
Weather in January
January, like December, in Saint Louis, Virginia, is an icy winter month, with temperature in the range of an average low of 24.8°F (-4°C) and an average high of 38.7°F (3.7°C). January, noted for its average high-temperature of 38.7°F (3.7°C) and an average low-temperature of 24.8°F (-4°C), is considered the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Saint Louis, is a frosty month, with an average temperature varying between 27.9°F (-2.3°C) and 43.2°F (6.2°C). Saint Louis registers an average high-temperature of a chilly 43.2°F (6.2°C) at the commencement of February, closely related to the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Saint Louis, is a fresh month, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 34.3°F (1.3°C). As March arrives, Saint Louis's weather shows a minor increase in high-temperatures, edging from February's chilly 43.2°F (6.2°C) to a cool 51.6°F (10.9°C). Weather in March »
Weather in April
April is a comfortable spring month in Saint Louis, Virginia, with an average temperature ranging between max 64°F (17.8°C) and min 43.5°F (6.4°C). April witnesses an increase in the average high-temperature, moving from a fresh 51.6°F (10.9°C) in March to a refreshing 64°F (17.8°C). Weather in April »
Weather in May
May, the last month of the spring in Saint Louis, is a moderately hot month, with an average temperature ranging between min 54°F (12.2°C) and max 73.8°F (23.2°C). May brings a rise in the average high-temperature, transitioning from April's enjoyable 64°F (17.8°C) to a moderately hot 73.8°F (23.2°C). Weather in May »
Weather in June
June, the first month of the summer in Saint Louis, is still a warm month, with an average temperature varying between 61°F (16.1°C) and 82°F (27.8°C). Saint Louis observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's moderately hot 73.8°F (23.2°C) to a still warm 82°F (27.8°C). Weather in June »
Weather in July
July is a tropical summer month in Saint Louis, Virginia, with an average temperature ranging between min 65.5°F (18.6°C) and max 86.5°F (30.3°C). Saint Louis's July weather, marked by an average high temperature of 86.5°F (30.3°C) and an average low temperature of 65.5°F (18.6°C), is the warmest in the year. The heat index value during July is computed to be a sweltering 98.6°F (37°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Saint Louis, Virginia, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 84.6°F (29.2°C). Saint Louis's August average high-temperature settles at a warm 84.6°F (29.2°C), showing a near match with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Saint Louis, is still a warm month, with an average temperature fluctuating between 58.3°F (14.6°C) and 77.4°F (25.2°C). September is marked by a subtle drop in average high-temperatures, transitioning from 84.6°F (29.2°C) in August to a still moderately hot 77.4°F (25.2°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Saint Louis, Virginia, with an average temperature varying between 47.3°F (8.5°C) and 65.3°F (18.5°C). Saint Louis's weather in October involves a decrease in the average high-temperature, moving down from September's moderately hot 77.4°F (25.2°C) to a comfortable 65.3°F (18.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Saint Louis, Virginia, with an average temperature fluctuating between 52.5°F (11.4°C) and 36.5°F (2.5°C). A shift in the average high-temperature occurs in November, reducing from a refreshing 65.3°F (18.5°C) in October to a cool 52.5°F (11.4°C). Weather in November »
Weather in December
December, the first month of the winter in Saint Louis, is also a frosty month, with an average temperature ranging between max 43.7°F (6.5°C) and min 30.9°F (-0.6°C). The beginning of December brings a slight decrease in the average high-temperature, transitioning from a fresh 52.5°F (11.4°C) in November to a chilly 43.7°F (6.5°C). Weather in December »
Updated: Jul 22, 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 part of the year is the coldest?
January, known for its average high temperature of 38.7°F (3.7°C) and an average low temperature of 24.8°F (-4°C), is the coldest month.
How much does it rain in Saint Louis?
Throughout the year, there are 162.2 rainfall days, and 31.1" (790mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 6.8 days and typically aggregates up to 4.17" (106mm) of snow.
How many days does it snow?
In Saint Louis, during the entire year, snow falls for 21.9 days and aggregates up to 14.88" (378mm) of snow.
What are the months with the least sunshine?
The months with the least sunshine are January and December, with an average of 5.1h of sunshine.
What are the months with the lowest UV index in Saint Louis?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint Louis, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the rainiest month?
The wettest months are May and August, with an average 3.35" (85mm) of rainfall.
When it does not snow?
In Saint Louis, snow does not fall in May through September.
When is the highest UV index?
The months with the highest UV index are May through August, with an average maximum UV index of 6.
When are the longest days?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What month is the hottest?
July proves to be the warmest month, recording an average peak temperature of 86.5°F (30.3°C) and a minimum temperature of 65.5°F (18.6°C).
What is the least humid month?
The least humid month is July, with an average relative humidity of 73%.
What month has the most sunshine?
With an average of 10.8h of sunshine, July has the most sunshine of the year.
What is the driest month?
September is the month with the least rainfall. Rain falls for 13.7 days and accumulates 1.93" (49mm) of precipitation.
What are the most humid months?
The months with the highest humidity are October and December, with an average relative humidity of 78%.
What is the month with the shortest days?
With an average of 9h and 30min of daylight, December has the shortest days of the year.
Average temperature
Saint Louis, VA
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.7°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure
Saint Louis, VA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Saint Louis, VA
- Average wind speed in January:
7.1mph - Average wind speed in February:
7.1mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.2mph - Average wind speed in May:
5.8mph - Average wind speed in June:
5.3mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.4mph - Average wind speed in September:
5mph - Average wind speed in October:
6mph - Average wind speed in November:
6.3mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity
Saint Louis, VA
The months with the highest relative humidity are October and December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Saint Louis, VA
- Average rainfall in January:
2.13" - Average rainfall in February:
2.2" - Average rainfall in March:
2.44" - Average rainfall in April:
2.83" - Average rainfall in May:
3.35" - Average rainfall in June:
2.36"
- Average rainfall in July:
2.99" - Average rainfall in August:
3.35" - Average rainfall in September:
1.93" - Average rainfall in October:
2.64" - Average rainfall in November:
2.28" - Average rainfall in December:
2.6"
The wettest months (with the highest rainfall) are May and August (3.35").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Saint Louis, VA
- Average rainfall days in January:
10.1 days - Average rainfall days in February:
10.2 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
13.7 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
10.7 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (10.1 days).
Average snowfall
Saint Louis, VA
The month with the highest snowfall is January (4.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Saint Louis, VA
- Average snowfall days in January:
6.8 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
3.9 days - Average snowfall days in April:
0.2 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:
0.1 days - Average snowfall days in November:
0.8 days - Average snowfall days in December:
3.8 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Louis, VA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - 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 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 5min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days
Saint Louis, VA
- Average sunshine days in January:
15.7 days - Average sunshine days in February:
14 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.1 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
12.2 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.1 days).
Average UV index
Saint Louis, VA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Saint Louis, VA
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Saint Louis, VA
The months with the highest visibility are February, March, April, June, July, August and November (6mi).
The months with the lowest visibility are January, May, September, October and December (5mi).
Saint Louis, Virginia, USA
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