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

50°F

10°C

Humidity 77%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 43°F (6°C)
Visibility NA
Last update 18 Jun 05:00 AM MDT
Extended Forecast for

13 Miles ESE St. Ignatius MT

  • Today

    Today: Sunny, with a high near 56. West wind 9 to 16 mph, with gusts as high as 26 mph.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. West northwest wind 8 to 15 mph becoming east southeast after midnight. Winds could gust as high as 23 mph.

    Low: 36 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Increasing clouds, with a high near 61. East southeast wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 21 mph.

    High: 61 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 41. Southwest wind 7 to 9 mph becoming north northwest in the evening.

    Low: 41 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 61. Southwest wind 7 to 12 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Breezy.

    Low: 38 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 56. West wind 9 to 16 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 36. West northwest wind 8 to 15 mph becoming east southeast after midnight. Winds could gust as high as 23 mph.
Juneteenth
Increasing clouds, with a high near 61. East southeast wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 41. Southwest wind 7 to 9 mph becoming north northwest in the evening.
Saturday
Mostly sunny, with a high near 61. Southwest wind 7 to 12 mph becoming west 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 38. Breezy.
Sunday
Sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ESE St. Ignatius MT
 47.27°N 113.83°W (Elev. 7165 ft)
Last Update:
2:01 am MDT Jun 18, 2026
Forecast Valid:
6am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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