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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

EUREKA (EURM8)

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

NA

56°F

13°C

Humidity 87%
Wind Speed SSE 2 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 17 Aug 03:15 AM MDT
Extended Forecast for

Fortine MT

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.

    High: 83 °F

    Decreasing
    Clouds

  • 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

Today
Mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
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:
4am 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