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

Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies; Heavy Rain in Guam

A storm system moving over the Rockies today will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Heavy snow expected from northwestern Wyoming into southern Montana. Ongoing heavy showers and thunderstorms from Invest 96W could result in localized flash flooding, particularly in central or southern Guam early this morning. Read More >

Current conditions at

JETTE (JETM8)

Lat: 47.76706°NLon: 114.23378°WElev: 3593.0ft.

NA

36°F

2°C

Humidity 97%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 15 Oct 08:43 AM MDT
Extended Forecast for

5 Miles NE Big Arm MT

  • Today

    Today: Mostly sunny, with a high near 51. Light and variable wind.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: Areas of frost after 4am. Otherwise, partly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Thursday

    Thursday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming south around 5 mph in the afternoon.

    High: 53 °F

    Areas Frost
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37. South southwest wind 3 to 6 mph.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: A 50 percent chance of rain. Partly sunny, with a high near 50. South southwest wind 6 to 9 mph.

    High: 50 °F

    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 52.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Rain Likely

  • Sunday

    Sunday: Rain. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain

Detailed Forecast

Today
Mostly sunny, with a high near 51. Light and variable wind.
Tonight
Areas of frost after 4am. Otherwise, partly cloudy, with a low around 35. Calm wind.
Thursday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 53. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 37. South southwest wind 3 to 6 mph.
Friday
A 50 percent chance of rain. Partly sunny, with a high near 50. South southwest wind 6 to 9 mph.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 52.
Saturday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 43.
Sunday
Rain. Mostly cloudy, with a high near 53.
Sunday Night
Rain. Mostly cloudy, with a low around 39.
Monday
Rain likely. Mostly cloudy, with a high near 48.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Tuesday
A slight chance of rain. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Big Arm MT
 47.85°N 114.2°W (Elev. 2995 ft)
Last Update:
3:30 am MDT Oct 15, 2025
Forecast Valid:
9am MDT Oct 15, 2025-6pm MDT Oct 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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