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

Areas of Excessive Rainfall and Severe Thunderstorms Today

Heavy to excessive rainfall from thunderstorms may bring areas of flooding today across parts of Texas, the Southeast U.S., and the lower Ohio Valley. Severe thunderstorms with large hail, damaging wind gusts, and a couple tornadoes are expected this afternoon and evening across parts of west and southwest Texas. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

unknown precip

77°F

25°C

Humidity 30%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Heat Index78°F (26°C)
Last update 26 May 02:15 PM MDT
Extended Forecast for

Garrison MT

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. South southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 9pm, then a chance of rain between 9pm and midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 43. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely then
    Patchy Fog

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms after noon. Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 81 °F

    Areas Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 11pm. Patchy fog between 3am and 4am. Otherwise, partly cloudy, with a low around 46. Calm wind. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers then
    Patchy Fog

  • Thursday

    Thursday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 87 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 64.

    High: 64 °F

    Showers

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. South southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely before 9pm, then a chance of rain between 9pm and midnight. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 43. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 11pm. Patchy fog between 3am and 4am. Otherwise, partly cloudy, with a low around 46. Calm wind. Chance of precipitation is 40%.
Thursday
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 48.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 44.
Saturday
Rain likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 64.
Saturday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 38.
Sunday
Rain and thunderstorms likely. Partly sunny, with a high near 63.
Sunday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 37.
Monday
A chance of rain and thunderstorms. Partly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.51°N 112.81°W (Elev. 4380 ft)
Last Update:
2:01 pm MDT May 26, 2026
Forecast Valid:
2pm MDT May 26, 2026-6pm MDT Jun 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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