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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, is another subzero cold winter month in San Luis, Colorado, with temperature in the range of an average high of 30.6°F (-0.8°C) and an average low of 9.3°F (-12.6°C). January, having an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 9.3°F (-12.6°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in San Luis, is an icy month, with an average temperature varying between 33.1°F (0.6°C) and 14.2°F (-9.9°C). San Luis's February reports an average high-temperature of an icy 33.1°F (0.6°C), exhibiting a minor difference from January. Weather in February »
Weather in March
March, the first month of the spring in San Luis, is a chilly month, with an average temperature varying between 24.1°F (-4.4°C) and 43.5°F (6.4°C). The transition from February to March brings a temperature rise, with average high-temperatures increasing from an icy 33.1°F (0.6°C) to a chilly 43.5°F (6.4°C). Weather in March »
Weather in April
April in San Luis, Colorado, is a fresh spring month, with an average temperature ranging between max 52°F (11.1°C) and min 28.8°F (-1.8°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a frosty 43.5°F (6.4°C) in March to a cool 52°F (11.1°C). Weather in April »
Weather in May
May, the last month of the spring in San Luis, is an enjoyable month, with temperature in the range of an average low of 35.6°F (2°C) and an average high of 61.5°F (16.4°C). May's arrival coincides with a rise in the average high-temperature, moving from April's fresh 52°F (11.1°C) to a refreshing 61.5°F (16.4°C). Weather in May »
Weather in June
June, the first month of the summer in San Luis, is a warm month, with an average temperature fluctuating between 45.5°F (7.5°C) and 74.7°F (23.7°C). The beginning of June signals a rise in the average high-temperature, moving from a refreshing 61.5°F (16.4°C) in May to a moderately hot 74.7°F (23.7°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in San Luis, Colorado, with an average temperature varying between 50.2°F (10.1°C) and 76.6°F (24.8°C). San Luis registers the highest average temperatures during the month of July, with peaks of 76.6°F (24.8°C) and lows of 50.2°F (10.1°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in San Luis, Colorado, with an average temperature ranging between min 48.6°F (9.2°C) and max 74.8°F (23.8°C). August experiences an average high-temperature of a still warm 74.8°F (23.8°C), barely different from July's 76.6°F (24.8°C). Weather in August »
Weather in September
September, the first month of the autumn in San Luis, is also an agreeable month, with an average temperature varying between 43.7°F (6.5°C) and 68.5°F (20.3°C). Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 74.8°F (23.8°C) in August to a pleasant 68.5°F (20.3°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in San Luis, Colorado, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 32.5°F (0.3°C). October's arrival comes with a decrease in the average high-temperature, moving from a pleasant 68.5°F (20.3°C) in September to a mild 55.4°F (13°C). Weather in October »
Weather in November
November, the last month of the autumn in San Luis, is also a frosty month, with temperature in the range of an average high of 43.3°F (6.3°C) and an average low of 22.8°F (-5.1°C). The arrival of November corresponds with a temperature reduction, down from October's mild 55.4°F (13°C) to a chilly 43.3°F (6.3°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in San Luis, Colorado, with temperature in the range of an average low of 11.8°F (-11.2°C) and an average high of 32.2°F (0.1°C). As November transitions into December, San Luis sees a drop in the average high-temperature, transitioning from a frosty 43.3°F (6.3°C) to a wintry 32.2°F (0.1°C). Weather in December »
Updated: Jul 24, 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?
During the coldest month in San Luis, January, temperatures average a high of 30.6°F (-0.8°C) and a low of 9.3°F (-12.6°C).
What is the most humid month?
January is the most humid month, with an average relative humidity of 82%.
How much does it rain?
Throughout the year, there are 72.2 rainfall days, and 8.82" (224mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through June, September through December.
How much does it snow?
Throughout the year, there are 57.6 snowfall days, and 28.58" (726mm) of snow is accumulated.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 6.5h of sunshine.
What is the month with the lowest UV index?
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
When does it snow the most?
The month with the most snowfall is March, when snow falls for 9 days and typically aggregates up to 5.55" (141mm) of snow.
When is Daylight Saving Time (DST)?
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 in San Luis, with an average relative humidity of 38%.
When are the longest days?
June has the longest days of the year in San Luis, with an average of 14h and 42min of daylight.
What month has the most sunshine?
June has the most sunshine of the year, with an average of 11.8h of sunshine.
What is the month with the highest UV index?
June through August, with an average maximum UV index of 5, are months with the highest UV index.
What time of the year is the hottest?
In San Luis, the peak temperatures are generally noted in July, averaging a high of 76.6°F (24.8°C) and a low of 50.2°F (10.1°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 13.9 days and accumulates 1.61" (41mm) of precipitation.
When it does not snow?
July and August are months without snowfall in San Luis, Colorado.
What is the driest month?
November is the month with the least rainfall. Rain falls for 1.3 days and accumulates 0.43" (11mm) of precipitation.
What is the month with the shortest days?
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average temperature
San Luis, CO
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (30.6°F).
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure
San Luis, CO
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
30.02"Hg - Average pressure in August:
30.03"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed
San Luis, CO
- Average wind speed in January:
5.6mph - Average wind speed in February:
7.2mph - Average wind speed in March:
8mph - Average wind speed in April:
8.9mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.1mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.4mph
The windiest months (with the highest average wind speed) are April and May (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity
San Luis, CO
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (38%).
Average rainfall
San Luis, CO
- Average rainfall in January:
0.47" - Average rainfall in February:
0.59" - Average rainfall in March:
0.83" - Average rainfall in April:
0.75" - Average rainfall in May:
0.79" - Average rainfall in June:
0.75"
- Average rainfall in July:
1.61" - Average rainfall in August:
0.83" - Average rainfall in September:
0.59" - Average rainfall in October:
0.67" - Average rainfall in November:
0.43" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days
San Luis, CO
- Average rainfall days in January:
3.2 days - Average rainfall days in February:
2.8 days - Average rainfall days in March:
5 days - Average rainfall days in April:
7.8 days - Average rainfall days in May:
7.5 days - Average rainfall days in June:
7.5 days
- Average rainfall days in July:
13.9 days - Average rainfall days in August:
8.9 days - Average rainfall days in September:
7.1 days - Average rainfall days in October:
3.9 days - Average rainfall days in November:
1.3 days - Average rainfall days in December:
3.3 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (1.3 days).
Average snowfall
San Luis, CO
- Average snowfall in January:
3.7" - Average snowfall in February:
4.29" - Average snowfall in March:
5.55" - Average snowfall in April:
3.31" - Average snowfall in May:
1.77" - Average snowfall in June:
0.04"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are July and August (0").
Average snowfall days
San Luis, CO
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
10.1 days - Average snowfall days in March:
9 days - Average snowfall days in April:
7.2 days - Average snowfall days in May:
2.7 days - Average snowfall days in June:
0.3 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.4 days - Average snowfall days in October:
3.3 days - Average snowfall days in November:
5.6 days - Average snowfall days in December:
9.7 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
San Luis, CO
- 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:
6h and 3min - Average sunshine in February:
6h and 4min - Average sunshine in March:
8h and 5min - Average sunshine in April:
10h and 5min - Average sunshine in May:
11h and 3min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
11h and 3min - Average sunshine in August:
11h and 4min - Average sunshine in September:
11h and 0min - Average sunshine in October:
7h and 3min - Average sunshine in November:
7h and 2min - Average sunshine in December:
6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 30min).
Average sunshine days
San Luis, CO
- Average sunshine days in January:
21.4 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
18.6 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
19.6 days - Average sunshine days in June:
20.2 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
19 days - Average sunshine days in September:
20.5 days - Average sunshine days in October:
24.1 days - Average sunshine days in November:
23.3 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is October (24.1 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
San Luis, CO
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
San Luis, CO
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and October (Cloud cover 14).
Average visibility
San Luis, CO
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
San Luis, Colorado, USA
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