Monthly weather forecast and climate
San Luis, CO

Weather in January

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

Weather in February

The last month of the winter, February, is a cold month in San Luis, Colorado, 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). In February, the average high-temperature is practically the same as in January - a wintry 33.1°F (0.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in San Luis, Colorado, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 24.1°F (-4.4°C). In March, the average high-temperature increases, from a wintry 33.1°F (0.6°C) in February, to a chilly 43.5°F (6.4°C). Weather in March »

Weather in April

April in San Luis, Colorado, is a cool spring month, with average temperature fluctuating between 28.8°F (-1.8°C) and 52°F (11.1°C). In San Luis, the average high-temperature slightly increases, from a frosty 43.5°F (6.4°C) in March, to a fresh 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 average temperature varying between 35.6°F (2°C) and 61.5°F (16.4°C). In May, the average high-temperature increases, from a cool 52°F (11.1°C) in April, to a comfortable 61.5°F (16.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in San Luis, Colorado, with average temperature ranging between max 74.7°F (23.7°C) and min 45.5°F (7.5°C). In June, the average high-temperature increases, from a comfortable 61.5°F (16.4°C) in May, to a warm 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 average temperature fluctuating between 76.6°F (24.8°C) and 50.2°F (10.1°C). July is the warmest month, with an average high-temperature of 76.6°F (24.8°C) and an average low-temperature of 50.2°F (10.1°C). Weather in July »

Weather in August

August, the last month of the summer, in San Luis, is another warm month, with average temperature ranging between min 48.6°F (9.2°C) and max 74.8°F (23.8°C). In August, the average high-temperature is almost the same as in July - a still warm 74.8°F (23.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in San Luis, is still a pleasant month, with average temperature fluctuating between 68.5°F (20.3°C) and 43.7°F (6.5°C). In San Luis, the average high-temperature slightly decreases, from a moderately hot 74.8°F (23.8°C) in August, to an agreeable 68.5°F (20.3°C). Weather in September »

Weather in October

October, the same as September, in San Luis, Colorado, is another mild autumn month, with average temperature ranging between max 55.4°F (13°C) and min 32.5°F (0.3°C). In San Luis, the average high-temperature drops, 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

The last month of the autumn, November, is also a frosty month in San Luis, Colorado, with average temperature fluctuating between 22.8°F (-5.1°C) and 43.3°F (6.3°C). In November, the average high-temperature drops, from a moderate 55.4°F (13°C) in October, to a frosty 43.3°F (6.3°C). Weather in November »

Weather in December

December, the first month of the winter, in San Luis, is also a wintry month, with average temperature fluctuating between 32.2°F (0.1°C) and 11.8°F (-11.2°C). In December, the average high-temperature drops, from a frosty 43.3°F (6.3°C) in November, to a wintry 32.2°F (0.1°C). Weather in December »
[Resources]

FAQ

What is the coldest month in San Luis?

With an average high-temperature of 30.6°F (-0.8°C) and an average low-temperature of 9.3°F (-12.6°C), January is the coldest month in San Luis, Colorado.

What is the most humid month in San Luis?

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

How much does it rain in San Luis?

In San Luis, during the entire year, the rain falls for 72.2 days and collects up to 8.82" (224mm) of precipitation.

When does it snow in San Luis?

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

How many days does it snow in San Luis?

In San Luis, Colorado, 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?

January has the least sunshine of the year in San Luis, with an average of 6.5h of sunshine.

When is the lowest UV index in San Luis?

Months with the lowest UV index in San Luis are January through March, October through December, with an average maximum UV index of 2.

When does it snow the most in San Luis?

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

What is the least humid month in San Luis?

The least humid month in San Luis is June, with an average relative humidity of 38%.

When are the longest days in San Luis?

With an average of 14.7h of daylight, June has the longest days of the year in San Luis, Colorado.

What month has the most sunshine in San Luis?

With an average of 11.8h of sunshine, June has the most sunshine of the year in San Luis, Colorado.

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

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

What is the warmest month in San Luis?

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

What is the wettest month in San Luis?

The month with the most rainfall is July when the rain falls for 13.9 days and typically aggregates up to 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 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?

December has the shortest days of the year in San Luis, Colorado, with an average of 9.6h 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).

[Resources]

Average pressure
San Luis, CO

Average pressure - San Luis, CO

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

[Resources]

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).

[Resources]

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").

[Resources]

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).

[Resources]

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).
Months with the least snowfall days are July and August (0 days).

[Resources]

Average daylight / Average sunshine
San Luis, CO

Average daylight / Average sunshine - San Luis, CO

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

The month with the most sunshine is June (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 6.5h).

[Resources]

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).

[Resources]

Average UV index
San Luis, CO

Average UV index - San Luis, CO

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, October, November and December (UV index 2).

[Resources]

Average visibility
San Luis, CO

Average visibility - San Luis, CO

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).

[Resources]