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

84°F

29°C

Humidity 25%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index82°F (28°C)
Last update 28 Aug 03:00 PM MDT
Extended Forecast for

St. Ignatius MT

  • Tonight

    Tonight: A 20 percent chance of rain after 2am. Patchy smoke between 8pm and midnight. Partly cloudy, with a low around 51. West wind 5 to 8 mph becoming calm in the evening.

    Low: 51 °F

    Patchy Smoke
    then Slight
    Chance Rain

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Patchy smoke between 10am and 11am. Partly sunny, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Rain and thunderstorms likely before 4am, then a chance of rain after 5am. Mostly cloudy, with a low around 44. Northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Rain Likely

  • Sunday

    Sunday: A 40 percent chance of rain. Partly sunny, with a high near 69. South southeast wind 5 to 9 mph becoming west in the afternoon.

    High: 69 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

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

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
A 20 percent chance of rain after 2am. Patchy smoke between 8pm and midnight. Partly cloudy, with a low around 51. West wind 5 to 8 mph becoming calm in the evening.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Patchy smoke between 10am and 11am. Partly sunny, with a high near 78. Calm wind becoming west northwest 5 to 8 mph in the afternoon. Chance of precipitation is 50%.
Saturday Night
Rain and thunderstorms likely before 4am, then a chance of rain after 5am. Mostly cloudy, with a low around 44. Northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of rain. Partly sunny, with a high near 69. South southeast wind 5 to 9 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 40. West northwest wind 5 to 10 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 77.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 45.
Thursday
A chance of rain. Mostly cloudy, with a high near 70.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 42.
Friday
A chance of rain. Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St. Ignatius MT
 47.31°N 114.09°W (Elev. 2999 ft)
Last Update:
2:01 pm MDT Aug 28, 2026
Forecast Valid:
3pm MDT Aug 28, 2026-6pm MDT Sep 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation