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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

ST. IGNATIUS (SIGM)

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

NA

69°F

21°C

Humidity 37%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 17 Jun 09:00 PM MDT
Extended Forecast for

8 Miles E St. Ignatius MT

  • Tonight

    Tonight: A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 41. Southwest wind 6 to 9 mph.

    Low: 41 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 54. West wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40. Northwest wind 7 to 14 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.

    Low: 40 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 57. East southeast wind 5 to 11 mph becoming west in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. West northwest wind 5 to 9 mph becoming south after midnight.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. Breezy.

    Low: 42 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 41. Southwest wind 6 to 9 mph.
Thursday
Sunny, with a high near 54. West wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 40. Northwest wind 7 to 14 mph becoming east southeast after midnight. Winds could gust as high as 20 mph.
Juneteenth
Mostly sunny, with a high near 57. East southeast wind 5 to 11 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 47. West northwest wind 5 to 9 mph becoming south after midnight.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 42. Breezy.
Sunday
Sunny, with a high near 53.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles E St. Ignatius MT
 47.32°N 113.93°W (Elev. 7067 ft)
Last Update:
2:01 pm MDT Jun 17, 2026
Forecast Valid:
9pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation