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

Great Falls, Great Falls International Airport (KGTF)

Lat: 47.47333°NLon: 111.38222°WElev: 3675.0ft.

Clear

52°F

11°C

Humidity 53%
Wind Speed SSW 9 MPH
Barometer 29.83 in (1010.16 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 24 May 12:20 AM MDT
Extended Forecast for

Ulm MT

  • Overnight

    Overnight: Increasing clouds, with a low around 44. South southwest wind around 7 mph.

    Low: 44 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 83. West southwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 83 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. West wind 13 to 18 mph becoming south 5 to 10 mph in the evening. Winds could gust as high as 28 mph.

    Low: 47 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 90. South southwest wind 6 to 9 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 54. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight. Low around 50. East northeast wind 5 to 13 mph becoming west in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Showers then
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 73. North northwest wind 5 to 9 mph.

    High: 73 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Showers
    Likely

Detailed Forecast

Overnight
Increasing clouds, with a low around 44. South southwest wind around 7 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 83. West southwest wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 47. West wind 13 to 18 mph becoming south 5 to 10 mph in the evening. Winds could gust as high as 28 mph.
Memorial Day
Sunny, with a high near 90. South southwest wind 6 to 9 mph.
Monday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 54. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight. Low around 50. East northeast wind 5 to 13 mph becoming west in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Wednesday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 73. North northwest wind 5 to 9 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 49.
Thursday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 80.
Friday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 51.
Saturday
A chance of rain and thunderstorms. Partly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Ulm MT
 47.43°N 111.51°W (Elev. 3392 ft)
Last Update:
12:31 am MDT May 24, 2026
Forecast Valid:
12am MDT May 24, 2026-6pm MDT May 30, 2026
 
Forecast Discussion
 
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Additional Resources

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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