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

MOCCASIN (MSCM8)

Lat: 47.05818°NLon: 109.95082°WElev: 4256.0ft.

NA

56°F

13°C

Humidity 80%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 17 Aug 07:00 AM MDT
Extended Forecast for

4 Miles WSW Hobson MT

  • Today

    Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm.  Increasing clouds, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 11pm.  Widespread haze after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 53. North northeast wind around 8 mph becoming south southwest after midnight.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely then
    Haze

  • Monday

    Monday: A 30 percent chance of showers after noon.  Widespread haze before 8am. Mostly sunny, with a high near 85. Southwest wind 5 to 7 mph becoming south southeast in the morning.

    High: 85 °F

    Haze then
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. North wind around 7 mph becoming south southwest after midnight.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. South southwest wind around 7 mph becoming northwest in the afternoon.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. East wind around 7 mph becoming south southwest after midnight.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. South southwest wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. North wind 6 to 10 mph becoming west after midnight.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 11pm. Widespread haze after 5am. Cloudy, then gradually becoming partly cloudy, with a low around 53. North northeast wind around 8 mph becoming south southwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers after noon. Widespread haze before 8am. Mostly sunny, with a high near 85. Southwest wind 5 to 7 mph becoming south southeast in the morning.
Monday Night
Mostly clear, with a low around 58. North wind around 7 mph becoming south southwest after midnight.
Tuesday
Sunny, with a high near 92. South southwest wind around 7 mph becoming northwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. East wind around 7 mph becoming south southwest after midnight.
Wednesday
Sunny, with a high near 90. South southwest wind 7 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 56. North wind 6 to 10 mph becoming west after midnight.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 50.
Friday
Sunny, with a high near 75.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Hobson MT
 46.99°N 109.94°W (Elev. 4193 ft)
8:31 am MDT Aug 17, 2025
9am 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