Alamosa weather live forecast

Today's maximum temperature in Alamosa is expected to be 21°C. Select a day from the live weather forecast for Alamosa, Colorado, USA for more weather parameters.

Thursday
17th Sep
21

12

3

5
Friday
18th Sep
21

9

6

7
Saturday
19th Sep
23

6

9

8
Sunday
20th Sep
23

4

11

8
Monday
21st Sep
22

5

11

9

5-day weather forecast updated at 04:01 on Thursday 17th September 2026 GMT

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The 5-day weather forecast for Colorado (Alamosa) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Alamosa weather forecast by day

Below are the detailed weather forecasts for Alamosa for the next 5 days.

Alamosa weather for Thursday 17th September 2026

Expect isolated thunderstorms in Alamosa, Colorado with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 71% chance of some rain and a fresh breeze of 31 kph from the south.

21
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
5
UV index (Moderate)
71
% chance of some rain
<10
mm of rainfall expected
21
°C wind chill
31
kph wind from S

Alamosa weather for Friday 18th September 2026

Expect isolated thunderstorms in Alamosa, Colorado with a maximum temperature of 21°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a moderate breeze of 20 kph from the south.

21
°C maximum temperature
9
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
44
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
20
kph wind from S

Alamosa weather for Saturday 19th September 2026

Expect scattered clouds in Alamosa, Colorado with a maximum temperature of 23°C, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south.

23
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
23
°C wind chill
20
kph wind from S

Alamosa weather for Sunday 20th September 2026

Expect scattered clouds in Alamosa, Colorado with a maximum temperature of 23°C, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

23
°C maximum temperature
4
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
23
°C wind chill
15
kph wind from W

Alamosa weather for Monday 21st September 2026

Expect scattered clouds in Alamosa, Colorado with a maximum temperature of 22°C, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south.