Alamosa (CO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Alamosa.
Climate overview of Alamosa
The climate in Alamosa, Colorado, United States of America, is marked by large temperature swings across the seasons, ranging from 28°C (82°F) in July to 0°C (32°F) in January.
The area sees almost no rain/snowfall, totalling just 180 mm (7.1 in) per year.
Alamosa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Alamosa - and find the best time to visit.
Monthly Temperature in Alamosa
In Alamosa, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 0°C (32°F) in the coolest month, January.
Nights vary from 9°C (48°F) in July to around -20°C (-4°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Alamosa
Alamosa sits in an arid zone with minimal moisture, averaging 180 mm (7.1 in) of rain/snowfall per year. The climate in Alamosa shows significant variation throughout the year. Expect low rainfall in July, the wettest month, with an average of 29 mm (1.1 in) of precipitation over 12 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 6 mm (0.2 in) of snowfall over 3 snowy days. For more details, please visit our Alamosa Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Alamosa
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: June, July and August
- Seasonal pattern: Very little rainfall year-round, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -20°C (-4°F).
Frequently asked questions about the climate in Alamosa
What is the best time to visit Alamosa?
May, June, July, August and September typically offer the most optimal weather in Alamosa. In contrast, January and December tend to have less optimal conditions. Alamosa has very little rainfall year-round, with warm summers and very cold winters.
What temperatures can I expect in Alamosa?
Daytime highs range from 0°C (32°F) in January to 28°C (82°F) in July. Nighttime lows range from -20°C (-4°F) to 9°C (48°F). Temperatures vary considerably through the year.
How much rain does Alamosa get?
Annual rainfall is around 180 mm (7.1 in). July is the wettest month with 29 mm (1.1 in), while January is the driest with 6 mm (0.2 in).
Alamosa 3-Day Forecast
Alamosa on the map
Alamosa is highlighted - select any city to see its climate.
Popular this month
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