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

Miles City, Frank Wiley Field Airport (KMLS)

Lat: 46.42806°NLon: 105.88639°WElev: 2628.0ft.

Clear

72°F

22°C

Humidity 78%
Wind Speed W 5 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 Aug 08:35 AM MDT
Extended Forecast for

Forsyth MT

  • Today

    Today: Sunny and hot, with a high near 91. Light and variable wind becoming west northwest around 6 mph in the morning.

    High: 91 °F

    Hot

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before midnight.  Mostly cloudy, with a low around 63. East northeast wind around 5 mph becoming calm  after midnight.

    Low: 63 °F

    Chance
    T-storms

  • Monday

    Monday: Sunny and hot, with a high near 92. Light and variable wind.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Southeast wind 3 to 5 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. East southeast wind 5 to 7 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Southeast wind around 7 mph becoming west in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. North northwest wind around 7 mph.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87. North northwest wind 6 to 10 mph.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 91. Light and variable wind becoming west northwest around 6 mph in the morning.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 63. East northeast wind around 5 mph becoming calm after midnight.
Monday
Sunny and hot, with a high near 92. Light and variable wind.
Monday Night
Mostly clear, with a low around 66. Southeast wind 3 to 5 mph.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming south southeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70. East southeast wind 5 to 7 mph.
Wednesday
Sunny and hot, with a high near 100. Southeast wind around 7 mph becoming west in the afternoon.
Wednesday Night
Partly cloudy, with a low around 68. North northwest wind around 7 mph.
Thursday
Sunny, with a high near 87. North northwest wind 6 to 10 mph.
Thursday Night
A 30 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 60. North wind 6 to 9 mph becoming east northeast after midnight.
Friday
Sunny, with a high near 83. Northeast wind 6 to 9 mph.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56. Northeast wind 6 to 9 mph.
Saturday
Sunny, with a high near 83. East wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Forsyth MT
 46.27°N 106.66°W (Elev. 2549 ft)
5:08 am MDT Aug 17, 2025
8am MDT Aug 17, 2025-6pm MDT Aug 23, 2025
 
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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