Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

52°F

11°C

Humidity 84%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 15 Aug 03:45 AM MDT
Extended Forecast for

2 Miles SW Garrison MT

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 3pm.  Patchy fog before 9am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 10pm.  Patchy fog after 3am.  Otherwise, cloudy during the early evening, then gradual clearing, with a low around 41. Light and variable wind.  Chance of precipitation is 40%.

    Low: 41 °F

    Chance
    T-storms then
    Patchy Fog

  • Sunday

    Sunday: A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 5pm.  Patchy fog before 9am.  Otherwise, partly sunny, with a high near 77. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 20%.

    High: 77 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 43. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Monday

    Monday: Partly sunny, with a high near 78. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 78 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight, then a chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 44. Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of rain before noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance Rain
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. Light and variable wind.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and 10pm. Patchy fog after 3am. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 41. Light and variable wind. Chance of precipitation is 40%.
Sunday
A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 77. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 43. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 78. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Tuesday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 45.
Friday
A slight chance of rain. Sunny, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Garrison MT
 46.51°N 112.84°W (Elev. 4882 ft)
2:01 am MDT Aug 15, 2026
4am MDT Aug 15, 2026-6pm MDT Aug 21, 2026
 
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