Climate and monthly weather forecast
San Luis, CO

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Weather in January

January, the same as December, in San Luis, Colorado, is another subzero cold winter month, with an average temperature varying between 9.3°F (-12.6°C) and 30.6°F (-0.8°C). January brings the lowest temperatures, with an average high of 30.6°F (-0.8°C) and an average low of 9.3°F (-12.6°C). Weather in January »

Weather in February

February, the last month of the winter in San Luis, is an icy month, with temperature in the range of an average low of 14.2°F (-9.9°C) and an average high of 33.1°F (0.6°C). San Luis registers an average high-temperature of an icy 33.1°F (0.6°C) with the arrival of February, showing minor deviation from the preceding month. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in San Luis, Colorado, with an average temperature fluctuating between 24.1°F (-4.4°C) and 43.5°F (6.4°C). The beginning of March signals a rise in the average high-temperature, moving from an icy 33.1°F (0.6°C) in February to a frosty 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 varying between 52°F (11.1°C) and 28.8°F (-1.8°C). The arrival of April signals a slight increase in the average high-temperature, moving from a chilly 43.5°F (6.4°C) in March to a cool 52°F (11.1°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in San Luis, Colorado, with an average temperature fluctuating between 35.6°F (2°C) and 61.5°F (16.4°C). May indicates a change in the average high-temperature, moving up from a cool 52°F (11.1°C) in April 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 moderately hot month, with an average temperature ranging between max 74.7°F (23.7°C) and min 45.5°F (7.5°C). An upsurge in temperatures occurs as May gives way to June, with average highs shifting from a comfortable 61.5°F (16.4°C) to a warm 74.7°F (23.7°C). Weather in June »

Weather in July

July, like June, in San Luis, Colorado, is another warm summer month, with an average temperature varying between 50.2°F (10.1°C) and 76.6°F (24.8°C). July, known for its average high temperature of 76.6°F (24.8°C) and an average low temperature of 50.2°F (10.1°C), is the warmest month. Weather in July »

Weather in August

August, the last month of the summer in San Luis, is also a moderately hot month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 74.8°F (23.8°C). August's advent presents an average high-temperature of a still warm 74.8°F (23.8°C), indicating a slight variation from the conditions of the previous month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in San Luis, Colorado, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 43.7°F (6.5°C). The arrival of September signals a subtle shift in temperature, down from a warm 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 an average temperature ranging between max 55.4°F (13°C) and min 32.5°F (0.3°C). The arrival of October signals a shift in temperature, down from an agreeable 68.5°F (20.3°C) in September to a moderate 55.4°F (13°C). Weather in October »

Weather in November

November, the last month of the autumn in San Luis, is another chilly month, with an average temperature ranging between min 22.8°F (-5.1°C) and max 43.3°F (6.3°C). November suggests a modest reduction in the average high-temperature, shifting from a moderate 55.4°F (13°C) in October to a chilly 43.3°F (6.3°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in San Luis, Colorado, with an average temperature varying between 32.2°F (0.1°C) and 11.8°F (-11.2°C). The commencement of December indicates a shift in the average high-temperature, receding from November's frosty 43.3°F (6.3°C) to an icy 32.2°F (0.1°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in San Luis?

January brings the lowest temperatures in San Luis, with an average high of 30.6°F (-0.8°C) and an average low of 9.3°F (-12.6°C).

What is the most humid month in San Luis?

January is the most humid month in San Luis, with an average relative humidity of 82%.

How much does it rain in San Luis?

Throughout the year, in San Luis, there are 72.2 rainfall days, and 8.82" (224mm) of precipitation is accumulated.

When does it snow in San Luis?

January through June, September through December are months with snowfall in San Luis, Colorado.

How many days does it snow in San Luis?

In San Luis, during the entire year, snow falls for 57.6 days and aggregates up to 28.58" (726mm) of snow.

What is the month with the least sunshine in San Luis?

The month with the least sunshine in San Luis is January, with an average of 6.5h of sunshine.

What are the months with the lowest UV index in San Luis?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the snowiest month in San Luis?

March is the month with the most snowfall in San Luis. Snow falls for 9 days and accumulates 5.55" (141mm) of snow.

When is Daylight Saving Time (DST) in San Luis?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in San Luis, 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 in San Luis?

With an average relative humidity of 38%, June is the least humid month in San Luis, Colorado.

When are the longest days in San Luis?

June has the longest days of the year in San Luis, Colorado, with an average of 14h and 42min of daylight.

What month has the most sunshine in San Luis?

The month with the most sunshine in San Luis, Colorado, is June, with an average of 11.8h of sunshine.

What is the month with the highest UV index in San Luis?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What part of the year is the hottest in San Luis?

July, marked by an average high-temperature of 76.6°F (24.8°C) and a low-temperature of 50.2°F (10.1°C), is the warmest month in San Luis, Colorado.

What is the rainiest month in San Luis?

July is the month with the most rainfall in San Luis. Rain falls for 13.9 days and accumulates 1.61" (41mm) of precipitation.

When it does not snow in San Luis?

In San Luis, Colorado, snow does not fall in July and August.

What is the driest month in San Luis?

The month with the least rainfall in San Luis is November, when the rain falls for 1.3 days and typically collects 0.43" (11mm) of precipitation.

What is the month with the shortest days in San Luis?

The month with the shortest days in San Luis, Colorado, is December, with an average of 9h and 42min of daylight.

Average temperature
San Luis, CO

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).

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Average pressure
San Luis, CO

Average pressure - San Luis, CO

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).

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Average wind speed
San Luis, CO

Average wind speed - San Luis, CO

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).

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Average rainfall
San Luis, CO

Average rainfall - San Luis, CO

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is November (0.43").

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Average rainfall days
San Luis, CO

Average rainfall days - San Luis, CO

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).

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Average snowfall
San Luis, CO

Average snowfall - San Luis, CO

The month with the highest snowfall is March (5.55").
The months with the least snowfall are July and August (0").

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Average snowfall days
San Luis, CO

Average snowfall days - San Luis, CO

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).

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Average daylight / Average sunshine
San Luis, CO

Average daylight / Average sunshine - San Luis, CO

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).

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).

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Average sunshine days
San Luis, CO

Average sunshine days - San Luis, CO

The month with the most sunshine days is October (24.1 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index
San Luis, CO

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).

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Average visibility
San Luis, CO

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).

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San Luis, Colorado, USA

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