National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

Current conditions at

Raynolds Pass MT-87 MP 1.2 (MTRAY)

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

NA

57°F

14°C

Humidity 64%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 17 Aug 08:00 PM MDT
Extended Forecast for

19 Miles NNW Island Park ID

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 6 to 9 mph becoming east in the evening.

    Low: 45 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers between 2pm and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 83. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Widespread haze between 1am and 2am. Mostly clear, with a low around 48. West wind 6 to 16 mph becoming east southeast after midnight. Winds could gust as high as 23 mph.

    Low: 48 °F

    Mostly Clear
    then Haze

  • Tuesday

    Tuesday: Sunny, with a high near 88. East wind 6 to 14 mph becoming south southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 88 °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 86. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47. South southwest wind 12 to 17 mph becoming north 6 to 11 mph after midnight. Winds could gust as high as 24 mph.

    Low: 47 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 83. Light and variable wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Thursday Night

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

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. West wind 6 to 9 mph becoming east in the evening.
Monday
A slight chance of showers between 2pm and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 83. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Monday Night
Widespread haze between 1am and 2am. Mostly clear, with a low around 48. West wind 6 to 16 mph becoming east southeast after midnight. Winds could gust as high as 23 mph.
Tuesday
Sunny, with a high near 88. East wind 6 to 14 mph becoming south southwest in the afternoon. Winds could gust as high as 21 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 86. Southeast wind 6 to 11 mph becoming south southwest 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 47. South southwest wind 12 to 17 mph becoming north 6 to 11 mph after midnight. Winds could gust as high as 24 mph.
Thursday
Sunny, with a high near 83. Light and variable wind becoming west 8 to 13 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 84.
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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
19 Miles NNW Island Park ID
 44.81°N 111.51°W (Elev. 6299 ft)
Last Update:
4:44 pm MDT Aug 17, 2025
Forecast Valid:
8pm MDT Aug 17, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation