Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

JETTE (JETM8)

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

NA

43°F

6°C

Humidity 96%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 20 May 03:43 AM MDT
Extended Forecast for

Swan Lake MT

  • Overnight

    Overnight: A 20 percent chance of rain after 5am.  Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm.  High near 59. Calm wind.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain before 11pm.  Partly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain after 5am. Mostly cloudy, with a low around 43. Calm wind.
Wednesday
Rain and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 59. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 39. Calm wind.
Thursday
Mostly sunny, with a high near 65. Calm wind.
Thursday Night
Partly cloudy, with a low around 43. Calm wind.
Friday
Mostly sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 50.
Memorial Day
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Monday Night
A chance of rain. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain. Partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Swan Lake MT
 47.94°N 113.87°W (Elev. 3576 ft)
2:01 am MDT May 20, 2026
4am MDT May 20, 2026-6pm MDT May 26, 2026
 
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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