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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

HARLEM (HRLM)

Lat: 48.54333°NLon: 108.83472°WElev: 2358.0ft.

NA

40°F

4°C

Humidity 80%
Wind Speed ESE 2 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 04 Oct 03:00 AM MDT
Extended Forecast for

Harlem MT

  • Overnight

    Overnight: Mostly clear, with a low around 39. East wind around 8 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. East southeast wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43. East southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 81. West northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. West northwest wind around 8 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73. Northwest wind around 6 mph becoming east northeast in the afternoon.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. Northwest wind around 5 mph becoming light and variable in the evening.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Northeast wind 3 to 8 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 39. East wind around 8 mph.
Sunday
Sunny, with a high near 73. East southeast wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 43. East southeast wind 5 to 10 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 81. West northwest wind 5 to 10 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.
Monday Night
Mostly clear, with a low around 45. West northwest wind around 8 mph.
Tuesday
Sunny, with a high near 73. Northwest wind around 6 mph becoming east northeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 42. Northwest wind around 5 mph becoming light and variable in the evening.
Wednesday
Mostly sunny, with a high near 72. Northeast wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 41.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 73.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Harlem MT
 48.54°N 108.78°W (Elev. 2339 ft)
Last Update:
12:31 am MDT Oct 4, 2026
Forecast Valid:
3am MDT Oct 4, 2026-6pm MDT Oct 10, 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