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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

EUREKA (EURM8)

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

NA

52°F

11°C

Humidity 40%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 18 Apr 12:15 PM MDT
Extended Forecast for

Eureka MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. Light and variable wind becoming south southeast around 5 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 33. South southwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain after midnight. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 64.

    High: 64 °F

    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 59. Light and variable wind becoming south southeast around 5 mph.
Tonight
Mostly clear, with a low around 33. South southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 69. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 41. Calm wind.
Monday
Sunny, with a high near 76. Light and variable wind.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
A chance of rain after midnight. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 64.
Wednesday Night
Rain, mainly before midnight. Mostly cloudy, with a low around 38.
Thursday
A chance of rain. Snow level 3400 feet rising to 4000 feet in the afternoon. Partly sunny, with a high near 57.
Thursday Night
A slight chance of rain. Snow level 4400 feet lowering to 3500 feet after midnight . Partly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Eureka MT
 48.88°N 115.06°W (Elev. 2818 ft)
Last Update:
12:21 pm MDT Apr 18, 2026
Forecast Valid:
12pm MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
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