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

Significant Flood Threat Continues For South-Central U.S.

A widespread and significant flood risk continues across the south-central U.S. from repeated rounds of intense rain and strong to severe thunderstorms. Flash flood watches are in effect for large part of the ArkLaTex. Today's concern extends from the Louisiana and extreme Upper Texas Gulf Coast to northeastern Texas and southeastern Oklahoma before shifting to all of eastern Texas on Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

Lat: 47.47333°NLon: 111.38222°WElev: 3675ft.

Clear

64°F

18°C

Humidity 22%
Wind Speed W 25 MPH
Barometer 29.76 in (1007.79 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 18 May 06:30 PM MDT
Extended Forecast for

Great Falls MT

Winter Weather Advisory May 19, 09:00pm until May 21, 09:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 39. West wind 15 to 20 mph becoming light west southwest after midnight. Winds could gust as high as 30 mph.

    Mostly Cloudy

    Low: 39 °F

  • Wednesday

    Wednesday: A 50 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north northeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    Slight Chance
    Rain then
    Chance Rain

    High: 56 °F

  • Wednesday
    Night

    Wednesday Night: Rain. Low around 34. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 34 °F

  • Thursday

    Thursday: Rain before 3pm, then rain and snow. High near 37. North northeast wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Rain then
    Rain/Snow

    High: 37 °F

  • Thursday
    Night

    Thursday Night: Rain and snow, becoming all snow after 9pm. Low around 30. North northeast wind 8 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Rain/Snow
    then Snow

    Low: 30 °F

  • Friday

    Friday: Snow. High near 38. North wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Snow

    High: 38 °F

  • Friday
    Night

    Friday Night: Rain and snow likely before midnight, then a chance of snow. Mostly cloudy, with a low around 31. North northeast wind 6 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Rain/Snow
    Likely then
    Chance Snow

    Low: 31 °F

  • Saturday

    Saturday: A chance of rain and snow before 9am, then a chance of rain. Mostly cloudy, with a high near 49. North northeast wind 6 to 9 mph.

    Chance
    Rain/Snow
    then Slight
    Chance Rain

    High: 49 °F

  • Saturday
    Night

    Saturday Night: A chance of rain, mainly after midnight. Mostly cloudy, with a low around 34.

    Chance Rain

    Low: 34 °F

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. West wind 15 to 20 mph becoming light west southwest after midnight. Winds could gust as high as 30 mph.
Wednesday
A 50 percent chance of rain, mainly after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north northeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Rain. Low around 34. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain before 3pm, then rain and snow. High near 37. North northeast wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain and snow, becoming all snow after 9pm. Low around 30. North northeast wind 8 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. High near 38. North wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Friday Night
Rain and snow likely before midnight, then a chance of snow. Mostly cloudy, with a low around 31. North northeast wind 6 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
A chance of rain and snow before 9am, then a chance of rain. Mostly cloudy, with a high near 49. North northeast wind 6 to 9 mph.
Saturday Night
A chance of rain, mainly after midnight. Mostly cloudy, with a low around 34.
Sunday
A chance of rain. Partly sunny, with a high near 60.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 41.
Monday
A slight chance of rain. Mostly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
A chance of rain. Mostly sunny, with a high near 66.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Great Falls MT
 47.51°N 111.31°W (Elev. 3399 ft)
Last Update:
4:31 pm MDT May 18, 2021
Forecast Valid:
6pm MDT May 18, 2021-6pm MDT May 25, 2021
 
Forecast Discussion
 
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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