Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

OLD FAITHFUL RANGER STATION (OFAW4)

Lat: 44.456667°NLon: 110.849444°WElev: 7332.0ft.

NA

27°F

-3°C

Humidity 75%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 29 Mar 07:15 AM MDT
Extended Forecast for

5 Miles SSW Lewis Lake WY

  • This Afternoon

    This Afternoon: Scattered rain and snow showers. Some thunder is also possible.  Snow level 8400 feet. Mostly cloudy, with a high near 37. Southwest wind around 7 mph.  Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.

    High: 37 °F

    Scattered
    Rain/Snow

  • Tonight

    Tonight: Scattered rain and snow showers before 9pm, then snow showers. Some thunder is also possible.  Low around 30. Southwest wind 5 to 8 mph becoming calm  in the evening.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 30 °F

    Rain/Snow
    Likely then
    Snow Showers

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible.  High near 39. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers. The snow could be heavy at times. Some thunder is also possible.  Low around 27. South southwest wind 7 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 27 °F

    Heavy Snow

  • Thursday

    Thursday: Snow showers. Some thunder is also possible.  High near 31. Southwest wind 9 to 13 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 31 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers.  Low around 18. West wind 6 to 13 mph, with gusts as high as 28 mph.  Chance of precipitation is 100%.

    Low: 18 °F

    Snow Showers

  • Friday

    Friday: Snow showers.  High near 30. West wind 6 to 8 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    High: 30 °F

    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight.  Partly cloudy, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Scattered rain and snow showers. Some thunder is also possible. Snow level 8400 feet. Mostly cloudy, with a high near 37. Southwest wind around 7 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Scattered rain and snow showers before 9pm, then snow showers. Some thunder is also possible. Low around 30. Southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow showers. Some thunder is also possible. High near 39. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow showers. The snow could be heavy at times. Some thunder is also possible. Low around 27. South southwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Thursday
Snow showers. Some thunder is also possible. High near 31. Southwest wind 9 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Thursday Night
Snow showers. Low around 18. West wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 100%.
Friday
Snow showers. High near 30. West wind 6 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 15.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Mostly clear, with a low around 18.
Sunday
Sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 49.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Lewis Lake WY
 44.23°N 110.66°W (Elev. 8150 ft)
4:01 pm MDT Mar 31, 2026
4pm MDT Mar 31, 2026-6pm MDT Apr 6, 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