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

BIG SHEEP MOUNTAIN (LCFM8)

Lat: 47.02819°NLon: 105.80472°WElev: 3172.0ft.

NA

47°F

8°C

Humidity 99%
Wind Speed NW 7 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 18 Jun 03:08 AM MDT
Extended Forecast for

17 Miles S Brockway MT

  • Overnight

    Overnight: Mostly clear, with a low around 46. West northwest wind around 8 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 66. West northwest wind 8 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%.

    High: 66 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 7pm.  Mostly clear, with a low around 46. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 66. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49. North northeast wind 6 to 14 mph becoming east southeast after midnight. Winds could gust as high as 21 mph.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 71. Breezy, with an east southeast wind 17 to 22 mph, with gusts as high as 32 mph.

    High: 71 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 52. Breezy, with an east southeast wind 17 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 60%.

    Low: 52 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 66. East southeast wind 15 to 17 mph becoming north in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 48. North wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.

    Low: 48 °F

    Slight Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 46. West northwest wind around 8 mph.
Thursday
A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. West northwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Thursday Night
A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 46. West northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Juneteenth
Sunny, with a high near 66. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 49. North northeast wind 6 to 14 mph becoming east southeast after midnight. Winds could gust as high as 21 mph.
Saturday
Partly sunny, with a high near 71. Breezy, with an east southeast wind 17 to 22 mph, with gusts as high as 32 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 52. Breezy, with an east southeast wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
Sunday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 66. East southeast wind 15 to 17 mph becoming north in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 48. North wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.
Monday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 64. Northwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 46. Northwest wind 5 to 13 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles S Brockway MT
 47.05°N 105.73°W (Elev. 3540 ft)
12:26 am MDT Jun 18, 2026
3am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
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Additional Resources

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