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

Raynolds Pass MT-87 MP 1.2 (MTRAY)

Lat: 44.72814°NLon: 111.47012°WElev: 6834.0ft.

NA

54°F

12°C

Humidity 77%
Wind Speed N 10 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 17 Aug 10:00 PM MDT
Extended Forecast for

21 Miles NNW Island Park ID

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 45. Northeast wind around 7 mph becoming southeast after midnight.

    Low: 45 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 2pm.  Sunny, with a high near 85. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Widespread haze between midnight and 3am. Mostly clear, with a low around 48. Southwest wind 6 to 15 mph becoming east southeast in the evening. Winds could gust as high as 22 mph.

    Low: 48 °F

    Mostly Clear
    then Haze

  • Tuesday

    Tuesday: Sunny, with a high near 89. East southeast wind 6 to 13 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50. South southwest wind 8 to 14 mph becoming southeast after midnight. Winds could gust as high as 21 mph.

    Low: 50 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. South southwest wind 11 to 16 mph becoming north 5 to 10 mph after midnight. Winds could gust as high as 23 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 84. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45. Northeast wind around 7 mph becoming southeast after midnight.
Monday
A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 85. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.
Monday Night
Widespread haze between midnight and 3am. Mostly clear, with a low around 48. Southwest wind 6 to 15 mph becoming east southeast in the evening. Winds could gust as high as 22 mph.
Tuesday
Sunny, with a high near 89. East southeast wind 6 to 13 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 50. South southwest wind 8 to 14 mph becoming southeast after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 87. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 47. South southwest wind 11 to 16 mph becoming north 5 to 10 mph after midnight. Winds could gust as high as 23 mph.
Thursday
Sunny, with a high near 84. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 45.
Saturday
A slight chance of showers. Sunny, with a high near 85.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 47.
Sunday
A chance of showers. Mostly sunny, with a high near 82.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles NNW Island Park ID
 44.83°N 111.52°W (Elev. 6138 ft)
8:43 pm MDT Aug 17, 2025
10pm MDT Aug 17, 2025-6pm MDT Aug 24, 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