Climate and monthly weather forecast
Alamosa, CO

Share
A vast field near the iconic dune field in Alamosa, Colorado, with a back view of the vast brown sandy dune hotbed and distant mountain ranges
A vast field near the iconic dune field in Alamosa, Colorado, with a back view of the vast brown sandy dune hotbed and distant mountain ranges

Weather in January

January, the same as December, in Alamosa, Colorado, is another subzero cold winter month, with an average temperature varying between 31.3°F (-0.4°C) and 11.8°F (-11.2°C). January stands out as Alamosa's coldest month, with temperatures ranging between an average high of 31.3°F (-0.4°C) and a low of 11.8°F (-11.2°C). Weather in January »

Weather in February

The last month of the winter, February, is a cold month in Alamosa, Colorado, with an average temperature varying between 16.2°F (-8.8°C) and 34.3°F (1.3°C). February observes an average high-temperature of a wintry 34.3°F (1.3°C), marking an insignificant difference from January's 31.3°F (-0.4°C). Weather in February »

Weather in March

March, the first month of the spring in Alamosa, is a chilly month, with an average temperature varying between 46°F (7.8°C) and 27.5°F (-2.5°C). March's onset brings a temperature rise, moving from a wintry 34.3°F (1.3°C) in February to a chilly 46°F (7.8°C). Weather in March »

Weather in April

April is a fresh spring month in Alamosa, Colorado, with temperature in the range of an average low of 32.4°F (0.2°C) and an average high of 54.1°F (12.3°C). The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from a chilly 46°F (7.8°C) in March to a cool 54.1°F (12.3°C). Weather in April »

Weather in May

May, the last month of the spring in Alamosa, is a refreshing month, with an average temperature ranging between min 38.7°F (3.7°C) and max 64.9°F (18.3°C). May brings a temperature change, with average high-temperatures moving from April's fresh 54.1°F (12.3°C) to a comfortable 64.9°F (18.3°C). Weather in May »

Weather in June

June, the first month of the summer in Alamosa, is a moderately hot month, with an average temperature ranging between min 46.8°F (8.2°C) and max 77.9°F (25.5°C). Alamosa's weather in June presents a rise in the average high-temperature, moving from a refreshing 64.9°F (18.3°C) in May to a moderately hot 77.9°F (25.5°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Alamosa, Colorado, with an average temperature fluctuating between 81°F (27.2°C) and 50.5°F (10.3°C). July is the warmest month of the year, registering average temperatures as high as 81°F (27.2°C) and as low as 50.5°F (10.3°C). The average heat index in July is calculated to be 82.4°F (28°C). Weather in July »

Weather in August

August, the last month of the summer in Alamosa, is also a moderately hot month, with an average temperature varying between 48.9°F (9.4°C) and 78.6°F (25.9°C). August's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 78.6°F (25.9°C) from July's 81°F (27.2°C). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Alamosa, Colorado, with an average temperature varying between 45.5°F (7.5°C) and 72.3°F (22.4°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 78.6°F (25.9°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Alamosa, Colorado, with temperature in the range of an average high of 59°F (15°C) and an average low of 34.3°F (1.3°C). A shift in the average high-temperature occurs in October, reducing from a pleasant 72.3°F (22.4°C) in September to a moderate 59°F (15°C). Weather in October »

Weather in November

November, the last month of the autumn in Alamosa, is another chilly month, with an average temperature fluctuating between 26.1°F (-3.3°C) and 46.2°F (7.9°C). The commencement of November indicates a shift in the average high-temperature, receding from October's moderate 59°F (15°C) to a frosty 46.2°F (7.9°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Alamosa, Colorado, with temperature in the range of an average high of 33.8°F (1°C) and an average low of 15.4°F (-9.2°C). December involves a decrease in temperature, down from a frosty 46.2°F (7.9°C) in November to a wintry 33.8°F (1°C). Weather in December »
Resources | Updated: Feb 10, 2024 | Published by: Weather U.S.

Frequently asked questions

What are the coldest months in Alamosa?

In Alamosa, January is the month with the lowest recorded average temperatures, measuring a high of 31.3°F (-0.4°C) and a low of 11.8°F (-11.2°C).

What is the most humid month in Alamosa?

January is the most humid month in Alamosa, Colorado, with an average relative humidity of 80%.

How much does it rain in Alamosa?

In Alamosa, Colorado, during the entire year, the rain falls for 77.3 days and collects up to 7.24" (184mm) of precipitation.

When does it snow in Alamosa?

January through May, October through December are months with snowfall in Alamosa, Colorado.

When does it snow the most in Alamosa?

The months with the most snowfall are January and March, with an average 3.5" (89mm) of accumulated snow.

How many days does it snow in Alamosa?

Throughout the year, in Alamosa, there are 37 snowfall days, and 20.08" (510mm) of snow is accumulated.

What is the month with the least sunshine in Alamosa?

The month with the least sunshine is January, with an average of 6.8h of sunshine.

What are the months with the lowest UV index in Alamosa?

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Alamosa, Colorado.

When is Daylight Saving Time (DST) in Alamosa?

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 in Alamosa?

With an average relative humidity of 37%, June is the least humid month in Alamosa.

When it does not snow in Alamosa?

In Alamosa, Colorado, snow does not fall in June through September.

When are the longest days in Alamosa?

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

What month has the most sunshine in Alamosa?

June has the most sunshine of the year, with an average of 12h of sunshine.

When is the highest UV index in Alamosa?

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

What are the warmest months in Alamosa?

In Alamosa, July registers the highest temperatures, averaging 81°F (27.2°C) at the peak and 50.5°F (10.3°C) at the lowest.

What is the rainiest month in Alamosa?

July is the month with the most rainfall. Rain falls for 13.3 days and accumulates 1.18" (30mm) of precipitation.

What is the driest month in Alamosa?

The months with the least rainfall are November and December Rain falls for 2.1 days and accumulates 0.31" (8mm) of rain.

What is the month with the shortest days in Alamosa?

The month with the shortest days is December, with an average of 9h and 36min of daylight.

Average pressure
Alamosa, CO

Average pressure - Alamosa, CO

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is April (29.91"Hg).

[Resources]

Average wind speed
Alamosa, CO

Average wind speed - Alamosa, CO

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

[Resources]

Average rainfall
Alamosa, CO

Average rainfall - Alamosa, CO

The wettest month (with the highest rainfall) is July (1.18").
The driest months (with the least rainfall) are November and December (0.31").

[Resources]

Average rainfall days
Alamosa, CO

Average rainfall days - Alamosa, CO

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is November (2.1 days).

[Resources]

Average snowfall
Alamosa, CO

Average snowfall - Alamosa, CO

The months with the highest snowfall are January and March (3.5").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days
Alamosa, CO

Average snowfall days - Alamosa, CO

The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight / Average sunshine
Alamosa, CO

Average daylight / Average sunshine - Alamosa, 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 36min).

The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).

[Resources]

Average sunshine days
Alamosa, CO

Average sunshine days - Alamosa, CO

The month with the most sunshine days is November (25.8 days).
The month with the least sunshine days is July (13.3 days).

[Resources]

Average UV index
Alamosa, CO

Average UV index - Alamosa, 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, October, November and December (UV index 2).

[Resources]

Average cloud cover
Alamosa, CO

Average cloud cover - Alamosa, CO

The months with the most cloud cover are January and February (Cloud cover 25).
The months with the least cloud cover are June, September and October (Cloud cover 12).

[Resources]

Average visibility
Alamosa, CO

Average visibility - Alamosa, CO

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

[Resources]

Alamosa, Colorado, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location