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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

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

NA

57°F

14°C

Humidity 62%
Wind Speed SE 4 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 28 Aug 04:00 AM MDT
Extended Forecast for

12 Miles W St. Ignatius MT

  • Today

    Today: Mostly sunny, with a high near 87. Light and variable wind becoming west 6 to 11 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight.

    Low: 51 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A chance of rain before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 80. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Chance of precipitation is 30%.

    High: 80 °F

    Chance Rain
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 45. West southwest wind 5 to 13 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Chance Rain

  • Sunday

    Sunday: A 30 percent chance of rain. Partly sunny, with a high near 72. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 72 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. Light and variable wind becoming west 6 to 11 mph in the afternoon.
Tonight
Increasing clouds, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight.
Saturday
A chance of rain before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 80. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45. West southwest wind 5 to 13 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 72. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 49.
Wednesday
A slight chance of rain. Partly sunny, with a high near 75.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Thursday
A chance of rain. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W St. Ignatius MT
 47.32°N 114.37°W (Elev. 2598 ft)
Last Update:
2:01 am MDT Aug 28, 2026
Forecast Valid:
5am MDT Aug 28, 2026-6pm MDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation