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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

JETTE (JETM8)

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

NA

42°F

6°C

Humidity 78%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 17 Mar 01:43 PM MDT
Extended Forecast for

3 Miles NW Big Arm MT

  • This Afternoon

    This Afternoon: A 50 percent chance of rain. Mostly cloudy, with a high near 51. South southwest wind around 8 mph, with gusts as high as 18 mph.

    High: 51 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 9pm. Mostly cloudy, with a low around 40. South southwest wind 3 to 6 mph.

    Low: 40 °F

    Chance Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 55. Southwest wind 3 to 7 mph.

    High: 55 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41. Southwest wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain. Partly sunny, with a high near 60. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 60 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of rain. Partly sunny, with a high near 64.

    High: 64 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain. Partly sunny, with a high near 54.

    High: 54 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Mostly cloudy, with a high near 51. South southwest wind around 8 mph, with gusts as high as 18 mph.
Tonight
A 40 percent chance of rain, mainly after 9pm. Mostly cloudy, with a low around 40. South southwest wind 3 to 6 mph.
Wednesday
A 40 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 55. Southwest wind 3 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 41. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 60. Calm wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 64.
Friday Night
A chance of rain. Mostly cloudy, with a low around 43.
Saturday
A chance of rain. Partly sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Big Arm MT
 47.83°N 114.35°W (Elev. 2999 ft)
Last Update:
2:01 pm MDT Mar 17, 2026
Forecast Valid:
2pm MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
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