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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

ST. IGNATIUS (SIGM)

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

NA

86°F

30°C

Humidity 27%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Heat Index83°F (28°C)
Last update 29 Jul 04:00 PM MDT
Extended Forecast for

10 Miles ESE St. Ignatius MT

Fire Weather Watch August 1, 02:00pm until August 2, 12:00am
Click here for hazard details and duration
Fire Weather Watch

  • Tonight

    Tonight: Patchy smoke. Mostly clear, with a low around 50. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    Low: 50 °F

    Patchy Smoke

  • Thursday

    Thursday: Areas of smoke. Sunny, with a high near 67. West southwest wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 67 °F

    Areas Smoke

  • Thursday Night

    Thursday Night: Patchy smoke. Partly cloudy, with a low around 49. West wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 49 °F

    Patchy Smoke

  • Friday

    Friday: Patchy smoke before 7am. Sunny, with a high near 69. West wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 69 °F

    Patchy Smoke
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 53. Northwest wind 7 to 11 mph becoming east southeast after midnight. Winds could gust as high as 18 mph.

    Low: 53 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. Windy.

    Low: 44 °F

    Mostly Clear
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 54. Breezy.

    High: 54 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Breezy.

    Low: 37 °F

    Clear and
    Breezy then
    Clear

Detailed Forecast

Tonight
Patchy smoke. Mostly clear, with a low around 50. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Thursday
Areas of smoke. Sunny, with a high near 67. West southwest wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Patchy smoke. Partly cloudy, with a low around 49. West wind 8 to 14 mph, with gusts as high as 25 mph.
Friday
Patchy smoke before 7am. Sunny, with a high near 69. West wind 7 to 11 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 53. Northwest wind 7 to 11 mph becoming east southeast after midnight. Winds could gust as high as 18 mph.
Saturday
Sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 44. Windy.
Sunday
Sunny, with a high near 54. Breezy.
Sunday Night
Clear, with a low around 37. Breezy.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles ESE St. Ignatius MT
 47.29°N 113.86°W (Elev. 8166 ft)
Last Update:
2:01 pm MDT Jul 29, 2026
Forecast Valid:
4pm MDT Jul 29, 2026-6pm MDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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