Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Current conditions at

STEVI (STVM8)

Lat: 46.55653°NLon: 114.07436°WElev: 3205.0ft.

NA

60°F

16°C

Humidity 27%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 18 May 07:14 PM MDT
Extended Forecast for

Stevensville MT

Frost Advisory May 19, 12:00am until May 19, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Tonight

    Tonight: A 20 percent chance of rain before 9pm.  Widespread frost, mainly after 3am.  Otherwise, partly cloudy, with a low around 28. Light and variable wind.

    Low: 28 °F

    Slight Chance
    Rain then
    Frost

  • Tuesday

    Tuesday: Widespread frost before 8am.  Otherwise, mostly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.

    High: 67 °F

    Frost then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. West wind around 5 mph becoming calm  in the evening.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 67. Light and variable wind.  Chance of precipitation is 30%.

    High: 67 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight.  Low around 36. Northwest wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 36 °F

    Showers then
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 9pm. Widespread frost, mainly after 3am. Otherwise, partly cloudy, with a low around 28. Light and variable wind.
Tuesday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 67. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 35. West wind around 5 mph becoming calm in the evening.
Wednesday
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 67. Light and variable wind. Chance of precipitation is 30%.
Wednesday Night
Showers and possibly a thunderstorm before 9pm, then rain, mainly between 9pm and midnight. Low around 36. Northwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 37.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 43.
Memorial Day
A slight chance of rain. Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Stevensville MT
 46.5°N 114.1°W (Elev. 3399 ft)
2:01 pm MDT May 18, 2026
7pm MDT May 18, 2026-6pm MDT May 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database