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Tropical Storm Edouard Along the Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard off the central Gulf Coast will bring tropical storm conditions and heavy rainfall to portions of Upper Texas and southwestern Louisiana coasts Tuesday into Wednesday. Storm Surge Watches and Tropical Storm Warnings are in effect. Hot and humid conditions will continue to expand from the Central Plains into the Ohio Valley and Mid-Atlantic this week. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

68°F

20°C

Humidity 26%
Wind Speed E 8 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 31 Aug 07:15 PM MDT
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: Increasing clouds, with a low around 47. Calm wind becoming east southeast 5 to 7 mph in the evening.

    Low: 47 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 83. East southeast wind 6 to 9 mph.

    High: 83 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 53. South southeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers after noon. Mostly sunny, with a high near 83. South southwest wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. South wind 5 to 14 mph, with gusts as high as 23 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49. West southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 80. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 80 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers before midnight. Partly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 47. Calm wind becoming east southeast 5 to 7 mph in the evening.
Tuesday
Partly sunny, with a high near 83. East southeast wind 6 to 9 mph.
Tuesday Night
A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 53. South southeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Wednesday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 83. South southwest wind 5 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 50. South wind 5 to 14 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 80. Light south wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 49. West southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 23 mph.
Friday
Mostly sunny, with a high near 80. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
A chance of showers. Partly cloudy, with a low around 48.
Sunday
A chance of showers. Partly sunny, with a high near 75.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 49.
Labor Day
A chance of showers. Partly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
4:57 pm MDT Aug 31, 2026
Forecast Valid:
7pm MDT Aug 31, 2026-6pm MDT Sep 7, 2026
 
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