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

Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

55°F

13°C

Humidity 82%
Wind Speed ESE 6 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 Aug 06:35 AM MDT
Extended Forecast for

Moore MT

  • Today

    Today: Sunny, with a high near 84. South southeast wind around 6 mph becoming north in the afternoon.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. North northeast wind around 6 mph becoming south southwest after midnight.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Calm wind becoming north around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 56. West southwest wind 5 to 7 mph becoming east in the evening. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 82. West southwest wind around 6 mph becoming north in the afternoon.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55. South wind around 7 mph.

    Low: 55 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 85. South wind 5 to 7 mph becoming northwest in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. North wind around 7 mph becoming south after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 84. South southeast wind around 6 mph becoming north in the afternoon.
Tonight
Mostly clear, with a low around 55. North northeast wind around 6 mph becoming south southwest after midnight.
Saturday
Sunny, with a high near 88. Calm wind becoming north around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 56. West southwest wind 5 to 7 mph becoming east in the evening. Chance of precipitation is 30%.
Sunday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 82. West southwest wind around 6 mph becoming north in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 55. South wind around 7 mph.
Monday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 85. South wind 5 to 7 mph becoming northwest in the afternoon.
Monday Night
Mostly clear, with a low around 57. North wind around 7 mph becoming south after midnight.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Moore MT
 46.98°N 109.69°W (Elev. 4098 ft)
Last Update:
3:51 am MDT Aug 15, 2025
Forecast Valid:
6am MDT Aug 15, 2025-6pm MDT Aug 21, 2025
 
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