Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Dillon, Dillon Airport (KDLN)

Lat: 45.2575°NLon: 112.55444°WElev: 5239.0ft.

Clear

64°F

18°C

Humidity 52%
Wind Speed NE 3 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 17 Aug 10:05 AM MDT
Extended Forecast for

9 Miles SE Dillon Airport MT

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm.  High near 76. West wind 5 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Slight Chance
    Showers then
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 53. West wind 5 to 10 mph becoming southeast in the evening.  Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm.  Mostly sunny, with a high near 80. Light and variable wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph.  Chance of precipitation is 30%.

    High: 80 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 55. West southwest wind 8 to 13 mph becoming east southeast in the evening. Winds could gust as high as 20 mph.

    Low: 55 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 88. South southeast wind 6 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. South southeast wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. South wind 6 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54. West wind 8 to 14 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 76. West wind 5 to 11 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. West wind 5 to 10 mph becoming southeast in the evening. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Mostly sunny, with a high near 80. Light and variable wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 55. West southwest wind 8 to 13 mph becoming east southeast in the evening. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 88. South southeast wind 6 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 57. South southeast wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 85. South wind 6 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 54. West wind 8 to 14 mph becoming north in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SE Dillon Airport MT
 45.18°N 112.43°W (Elev. 6401 ft)
8:31 am MDT Aug 17, 2025
10am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database