Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

Lat: 47.31333°NLon: 114.09806°WElev: 2990.0ft.

NA

63°F

17°C

Humidity 57%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 18 Aug 05:00 AM MDT
Extended Forecast for

13 Miles E St. Ignatius MT

  • Today

    Today: A 20 percent chance of rain after noon.  Partly sunny, with a high near 65. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 65 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: Mostly clear, with a low around 46. West wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67. West wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47. West northwest wind 6 to 9 mph becoming south southeast after midnight.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71. South southeast wind 5 to 10 mph becoming light and variable.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of rain.  Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 67.

    High: 67 °F

    Chance
    Showers

Detailed Forecast

Today
A 20 percent chance of rain after noon. Partly sunny, with a high near 65. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly clear, with a low around 46. West wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.
Wednesday
Sunny, with a high near 67. West wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 47. West northwest wind 6 to 9 mph becoming south southeast after midnight.
Thursday
Sunny, with a high near 71. South southeast wind 5 to 10 mph becoming light and variable.
Thursday Night
Mostly clear, with a low around 51.
Friday
Mostly sunny, with a high near 75.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 53.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.
Saturday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Partly cloudy, with a low around 45.
Sunday
A slight chance of rain. Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles E St. Ignatius MT
 47.36°N 113.81°W (Elev. 7064 ft)
2:01 am MDT Aug 18, 2026
6am MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database