National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall on the Western Gulf Coast; Severe Thunderstorms in the Southern Plains Friday

A multi-day heavy rainfall event will continue over the western Gulf Coast through Monday. Slight Risks of excessive rainfall have been issued, and Flood Watches remain in effect through Monday evening. Scattered severe storms capable of producing large hail and damaging winds are possible across western portions of Texas and Oklahoma on Friday. Read More >

Hazardous Weather Conditions

Current conditions at

San Luis Valley Regional Airport (KALS)

Lat: 37.44°NLon: 105.86°WElev: 7536ft.

Fair

62°F

17°C

Humidity 16%
Wind Speed SW 12 mph
Barometer 29.94 in (1007.0 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 21 May 7:52 pm MDT
Extended Forecast for

Alamosa CO

  • Tonight

    Tonight: Mostly clear, with a low around 31. West wind 5 to 15 mph becoming north northwest after midnight.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms between 2pm and 5pm. Increasing clouds, with a high near 71. North wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Chance of precipitation is 10%.

    High: 71 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 33. North wind 10 to 15 mph becoming south southeast 5 to 10 mph after midnight.

    Low: 33 °F

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 71. North northwest wind 5 to 10 mph.

    High: 71 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. West northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. West northwest wind 5 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.

    High: 77 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40. South wind 10 to 15 mph. Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 31. West wind 5 to 15 mph becoming north northwest after midnight.
Friday
A slight chance of showers and thunderstorms between 2pm and 5pm. Increasing clouds, with a high near 71. North wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon. Chance of precipitation is 10%.
Friday Night
Partly cloudy, with a low around 33. North wind 10 to 15 mph becoming south southeast 5 to 10 mph after midnight.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 71. North northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 34. West northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 76. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 38. West northwest wind 5 to 10 mph.
Memorial Day
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 40. South wind 10 to 15 mph. Chance of precipitation is 40%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Tuesday Night
Mostly cloudy, with a low around 35. South wind 10 to 15 mph.
Wednesday
Mostly sunny, with a high near 73. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 36. South wind 5 to 15 mph.
Thursday
Sunny, with a high near 76. South southwest wind 5 to 15 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alamosa CO
 37.47°N 105.88°W (Elev. 7497 ft)
Last Update:
7:16 pm MDT May 21, 2026
Forecast Valid:
8pm MDT May 21, 2026-6pm MDT May 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation