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

Areas of Excessive Rainfall and Severe Thunderstorms Friday

Heavy thunderstorms may bring areas of excessive rainfall and locally considerable flooding over parts of the Ozarks into the lower-Mississippi River Valley Friday and Saturday. Scattered severe thunderstorms may occur Friday from Montana into the central Plains, with hail and corridors of damaging winds possible. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

49°F

9°C

Humidity 100%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 13 Jun 01:15 AM MDT
Extended Forecast for

Garrison MT

  • Overnight

    Overnight: A 20 percent chance of rain. Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Slight Chance
    Rain

  • Friday

    Friday: A chance of rain before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Partly cloudy, with a low around 43. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 45.

    Low: 45 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Partly cloudy, with a low around 46. Calm wind.
Friday
A chance of rain before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Partly cloudy, with a low around 43. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Saturday
Sunny, with a high near 77. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 44. Northwest wind 5 to 8 mph becoming calm in the evening.
Sunday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 80. Chance of precipitation is 20%.
Sunday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 45.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 40.
Juneteenth
Sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.52°N 112.78°W (Elev. 4335 ft)
Last Update:
2:30 pm MDT Jun 12, 2025
Forecast Valid:
1am MDT Jun 13, 2025-6pm MDT Jun 19, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation