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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

EUREKA (EURM8)

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

NA

45°F

7°C

Humidity 38%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 11 Oct 12:15 PM MDT
Extended Forecast for

Eureka MT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 46. Northeast wind around 11 mph, with gusts as high as 22 mph.

    High: 46 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. East northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 26 °F

    Mostly Cloudy

  • Columbus Day

    Columbus Day: Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. Light southeast wind.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog between 7am and 10am. Otherwise, sunny, with a high near 56. Calm wind.

    High: 56 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 46. Northeast wind around 11 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 26. East northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Columbus Day
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 54. Calm wind.
Monday Night
Mostly clear, with a low around 26. Light southeast wind.
Tuesday
Patchy fog between 7am and 10am. Otherwise, sunny, with a high near 56. Calm wind.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 67.
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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:
12:22 pm MDT Oct 11, 2026
Forecast Valid:
1pm MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation