Monthly weather forecast and climate
Alamosa, CO

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 average temperature varying between 31.3°F (-0.4°C) and 11.8°F (-11.2°C). January is the coldest month, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 11.8°F (-11.2°C). Weather in January »

Weather in February

The last month of the winter, February, is a wintry month in Alamosa, Colorado, with average temperature varying between 16.2°F (-8.8°C) and 34.3°F (1.3°C). In Alamosa, the average high-temperature is relatively the same as in January - a wintry 34.3°F (1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Alamosa, Colorado, with temperature in the range of an average high of 46°F (7.8°C) and an average low of 27.5°F (-2.5°C). In Alamosa, the average high-temperature increases, from a cold 34.3°F (1.3°C) in February, to a frosty 46°F (7.8°C). Weather in March »

Weather in April

April is a cool spring month in Alamosa, Colorado, with average temperature ranging between min 32.4°F (0.2°C) and max 54.1°F (12.3°C). In April, the average high-temperature marginally rises, from a frosty 46°F (7.8°C) in March, to a fresh 54.1°F (12.3°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Alamosa, Colorado, with temperature in the range of an average low of 38.7°F (3.7°C) and an average high of 64.9°F (18.3°C). In May, the average high-temperature rises, from a cool 54.1°F (12.3°C) in April, 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 temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 46.8°F (8.2°C). In Alamosa, Colorado, the average high-temperature rises, from an enjoyable 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, like June, in Alamosa, Colorado, is another warm summer month, with average temperature varying between 81°F (27.2°C) and 50.5°F (10.3°C). The warmest month is July, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 50.5°F (10.3°C). The average heat index in July is estimated at 81.9°F (27.7°C). Weather in July »

Weather in August

August, the last month of the summer, in Alamosa, is also a moderately hot month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 78.6°F (25.9°C). In August, the average high-temperature is relatively the same as in July - a still warm 78.6°F (25.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Alamosa, Colorado, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 72.3°F (22.4°C). In Alamosa, Colorado, the average high-temperature slightly decreases, from a moderately hot 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 a moderate autumn month in Alamosa, Colorado, with average temperature fluctuating between 59°F (15°C) and 34.3°F (1.3°C). In Alamosa, Colorado, the average high-temperature in October decreases, from an agreeable 72.3°F (22.4°C) in September, to a mild 59°F (15°C). Weather in October »

Weather in November

November, the last month of the autumn, in Alamosa, is also a frosty month, with average temperature ranging between min 26.1°F (-3.3°C) and max 46.2°F (7.9°C). In Alamosa, the average high-temperature in November decreases, from a mild 59°F (15°C) in October, to a chilly 46.2°F (7.9°C). Weather in November »

Weather in December

December, the first month of the winter, in Alamosa, is also a wintry month, with temperature in the range of an average low of 15.4°F (-9.2°C) and an average high of 33.8°F (1°C). In Alamosa, the average high-temperature in December drops, from a chilly 46.2°F (7.9°C) in November, to a cold 33.8°F (1°C). Weather in December »
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FAQ

What is the coldest month in Alamosa?

The coldest month in Alamosa is January, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 11.8°F (-11.2°C).

What is the most humid month in Alamosa?

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

How much does it rain in Alamosa?

In Alamosa, 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.

How much does it snow in Alamosa?

In Alamosa, during the entire year, snow falls for 37 days, and aggregates up to 20.08" (510mm) of snow.

What is the snowiest month in Alamosa?

Months with the most snowfall in Alamosa, Colorado, are January and March, with an average 3.5" (89mm) of accumulated snow.

What is the month with the least sunshine in Alamosa?

January has the least sunshine of the year, with an average of 6.8h of sunshine.

What is the month 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.

What is the least humid month in Alamosa?

The least humid month in Alamosa, Colorado, is June, with an average relative humidity of 37%.

When it does not snow in Alamosa?

June through September are months without snowfall in Alamosa, Colorado.

When are the longest days in Alamosa?

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

What month has the most sunshine in Alamosa?

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

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

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

What is the warmest month in Alamosa?

With an average high-temperature of 81°F (27.2°C) and an average low-temperature of 50.5°F (10.3°C), July is the warmest month in Alamosa, Colorado.

What is the wettest month in Alamosa?

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

What is the driest month in Alamosa?

Months with the least rainfall in Alamosa 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?

December has the shortest days of the year in Alamosa, with an average of 9.6h of daylight.

Average pressure
Alamosa, CO

Average pressure - Alamosa, CO

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

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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).

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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").

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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).

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Average snowfall
Alamosa, CO

Average snowfall - Alamosa, CO

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

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Average snowfall days
Alamosa, CO

Average snowfall days - Alamosa, CO

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

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Average daylight / Average sunshine
Alamosa, CO

Average daylight / Average sunshine - Alamosa, 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: 12h).
The month with the least sunshine is January (Average sunshine: 6.8h).

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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).

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Average UV index
Alamosa, CO

Average UV index - Alamosa, CO

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

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Average visibility
Alamosa, CO

Average visibility - Alamosa, CO

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

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