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

Heat in the Central U.S.; Heavy Rain Possible for South Texas; Monitoring Erin Tropical Impacts

Hot temperatures are forecast over the Plains and into the lower Mississippi River Valley Friday where Heat Advisories have been issued. Heavy rain from a disturbance in the western Gulf could bring flooding to south Texas. Erin could bring tropical storm conditions and heavy rain to Puerto Rico and the USVI this weekend with dangerous surf and rip currents impacting the western Atlantic Basin. Read More >

Hazardous Weather Conditions

Current conditions at

San Luis Valley Regional Airport (KALS)

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

Fair

56°F

13°C

Humidity 51%
Wind Speed SE 3 mph
Barometer 30.28 in (1014.1 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 15 Aug 3:52 am MDT
Extended Forecast for

Alamosa CO

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny, with a high near 85. Light south southwest wind becoming southwest 10 to 15 mph in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 50. South wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. South wind 5 to 10 mph becoming west northwest in the morning.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. West wind 5 to 10 mph becoming south southeast after midnight.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 84. Light and variable wind becoming west 5 to 10 mph in the afternoon.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. West wind 5 to 10 mph becoming east southeast after midnight.

    Low: 46 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48. East southeast wind 5 to 10 mph.

    Low: 48 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. North northwest wind around 5 mph becoming east northeast in the afternoon.

    High: 85 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny, with a high near 85. Light south southwest wind becoming southwest 10 to 15 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Mostly cloudy, with a low around 50. South wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. South wind 5 to 10 mph becoming west northwest in the morning.
Saturday Night
Mostly clear, with a low around 46. West wind 5 to 10 mph becoming south southeast after midnight.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 84. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 46. West wind 5 to 10 mph becoming east southeast after midnight.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48. East southeast wind 5 to 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85. North northwest wind around 5 mph becoming east northeast in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48. East southeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 85. North northeast wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 47. East wind 5 to 10 mph becoming south after midnight.
Thursday
Sunny, with a high near 86. Northwest wind around 5 mph becoming northeast in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alamosa CO
 37.47°N 105.88°W (Elev. 7497 ft)
Last Update:
3:41 am MDT Aug 15, 2025
Forecast Valid:
4am MDT Aug 15, 2025-6pm MDT Aug 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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