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 >

Current conditions at

JETTE (JETM8)

Lat: 47.76706°NLon: 114.23378°WElev: 3593.0ft.

NA

82°F

28°C

Humidity 27%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Heat Index80°F (27°C)
Last update 17 Aug 03:43 PM MDT
Extended Forecast for

3 Miles ENE Big Arm MT

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Light north northeast wind.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Calm wind.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. Light and variable wind.
Monday Night
Mostly clear, with a low around 61. Light north northeast wind.
Tuesday
Sunny, with a high near 92. Calm wind.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61. Calm wind.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Big Arm MT
 47.8°N 114.22°W (Elev. 3067 ft)
Last Update:
2:30 pm MDT Aug 17, 2025
Forecast Valid:
4pm 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