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

Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

OLD FAITHFUL RANGER STATION (OFAW4)

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

NA

63°F

17°C

Humidity 57%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 17 Aug 07:15 PM MDT
Extended Forecast for

Old Faithful WY

  • Tonight

    Tonight: Scattered showers between 11pm and 1am. Mostly cloudy, with a low around 41. Northwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 41 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 72. Light and variable wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.

    High: 72 °F

    Partly Sunny
    then
    Scattered
    T-storms

  • Tuesday Night

    Tuesday Night: Isolated showers and thunderstorms before 9pm, then isolated showers between 9pm and 11pm. Partly cloudy, with a low around 38. West northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 38 °F

    Isolated
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. West wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming west around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers between 11pm and 1am. Mostly cloudy, with a low around 41. Northwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Scattered showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 72. Light and variable wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 40%.
Tuesday Night
Isolated showers and thunderstorms before 9pm, then isolated showers between 9pm and 11pm. Partly cloudy, with a low around 38. West northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 41. West wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. Light and variable wind.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Saturday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 41.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Old Faithful WY
 44.48°N 110.82°W (Elev. 7897 ft)
Last Update:
6:47 pm MDT Aug 17, 2026
Forecast Valid:
8pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation