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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Hays Site MT-66 MP 10.5 (MTHAY)

Lat: 47.91928°NLon: 108.72611°WElev: 3898.0ft.

NA

51°F

11°C

Humidity 66%
Wind Speed ESE 4 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 20 Sep 06:30 AM MDT
Extended Forecast for

5 Miles WSW Zortman MT

  • Today

    Today: A 40 percent chance of showers between 2pm and 5pm. Mostly cloudy, with a high near 59. Northeast wind 5 to 8 mph.

    High: 59 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 46. South southeast wind 8 to 11 mph.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 65. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 48. Southeast wind 11 to 16 mph, with gusts as high as 24 mph.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. South southeast wind 6 to 9 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53. Southeast wind 6 to 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. South southeast wind 5 to 7 mph becoming west southwest in the afternoon.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. West southwest wind 5 to 7 mph becoming east southeast in the evening.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71. North northwest wind 5 to 8 mph becoming south southeast in the afternoon.

    High: 71 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers between 2pm and 5pm. Mostly cloudy, with a high near 59. Northeast wind 5 to 8 mph.
Tonight
Mostly cloudy, with a low around 46. South southeast wind 8 to 11 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 65. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 48. Southeast wind 11 to 16 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 72. South southeast wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 53. Southeast wind 6 to 9 mph.
Wednesday
Mostly sunny, with a high near 74. South southeast wind 5 to 7 mph becoming west southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 51. West southwest wind 5 to 7 mph becoming east southeast in the evening.
Thursday
Sunny, with a high near 71. North northwest wind 5 to 8 mph becoming south southeast in the afternoon.
Thursday Night
Mostly clear, with a low around 53. East southeast wind 9 to 14 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 75. Southeast wind 10 to 13 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Zortman MT
 47.9°N 108.62°W (Elev. 4521 ft)
Last Update:
4:01 am MDT Sep 20, 2026
Forecast Valid:
6am MDT Sep 20, 2026-6pm MDT Sep 26, 2026
 
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Additional Resources

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Chance of Precipitation