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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

EUREKA (EURM8)

Lat: 48.89781°NLon: 115.05836°WElev: 2632.0ft.

NA

76°F

24°C

Humidity 45%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index78°F (26°C)
Last update 17 Aug 12:15 PM MDT
Extended Forecast for

Fortine MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. Southwest wind around 5 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Southwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Partly Cloudy

  • 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

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Light and variable wind.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. Light and variable wind.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. Southwest wind around 5 mph.
Tonight
Partly cloudy, with a low around 50. Southwest wind around 5 mph becoming calm in the evening.
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 53. Light and variable wind.
Tuesday
Sunny, with a high near 91. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fortine MT
 48.77°N 114.91°W (Elev. 2998 ft)
Last Update:
3:30 am MDT Aug 17, 2025
Forecast Valid:
12pm MDT Aug 17, 2025-6pm MDT Aug 23, 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