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

MAIN BOULDER (MBRM8)

Lat: 45.45813°NLon: 110.19768°WElev: 5405.0ft.

NA

44°F

7°C

Humidity 72%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 18 Jun 05:39 AM MDT
Extended Forecast for

21 Miles E Emigrant MT

  • Today

    Today: Sunny, with a high near 54. West wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 33. West northwest wind 13 to 18 mph becoming southwest 7 to 12 mph after midnight.

    Low: 33 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 58. South southwest wind 8 to 14 mph becoming north in the morning.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 42. North wind 9 to 14 mph becoming south after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after noon.  High near 53. South southwest wind around 11 mph becoming west in the afternoon.  Chance of precipitation is 90%.

    High: 53 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then a slight chance of showers.  Low around 38. West wind 9 to 11 mph.  Chance of precipitation is 80%.

    Low: 38 °F

    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 53. West northwest wind 9 to 15 mph.

    High: 53 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 32. Northwest wind 5 to 14 mph becoming south southeast after midnight.

    Low: 32 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 49. Light and variable wind becoming north northwest 9 to 14 mph in the morning.  Chance of precipitation is 40%.

    High: 49 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 54. West wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon.
Tonight
Mostly clear, with a low around 33. West northwest wind 13 to 18 mph becoming southwest 7 to 12 mph after midnight.
Juneteenth
Partly sunny, with a high near 58. South southwest wind 8 to 14 mph becoming north in the morning.
Friday Night
Mostly cloudy, with a low around 42. North wind 9 to 14 mph becoming south after midnight.
Saturday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 53. South southwest wind around 11 mph becoming west in the afternoon. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Low around 38. West wind 9 to 11 mph. Chance of precipitation is 80%.
Sunday
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 53. West northwest wind 9 to 15 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 32. Northwest wind 5 to 14 mph becoming south southeast after midnight.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 49. Light and variable wind becoming north northwest 9 to 14 mph in the morning. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 32. North wind 7 to 13 mph becoming south southeast after midnight.
Tuesday
Sunny, with a high near 57. South southeast wind 7 to 14 mph becoming north northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 37. North wind 7 to 13 mph becoming south after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 58. South wind 9 to 15 mph becoming west northwest in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles E Emigrant MT
 45.4°N 110.3°W (Elev. 9800 ft)
5:48 am MDT Jun 18, 2026
6am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database