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

OLD FAITHFUL RANGER STATION (OFAW4)

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

NA

21°C

69°F

Humidity 15%
Wind Speed SW 6 MPH
Barometer NA
Dewpoint -7°C (19°F)
Visibility NA
Last update 08 Oct 05:15 PM MDT
Extended Forecast for

Lewis Lake WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 18. Breezy, with a southwest wind 24 to 29 km/h, with gusts as high as 47 km/h.

    High: 18 °C

    Sunny and
    Breezy

  • Tonight

    Tonight: A 20 percent chance of showers after 5am. Increasing clouds, with a low around 4. South wind 16 to 23 km/h, with gusts as high as 34 km/h.

    Low: 4 °C

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 10. Breezy, with a south southwest wind 22 to 27 km/h decreasing to 14 to 19 km/h in the afternoon. Winds could gust as high as 42 km/h. Chance of precipitation is 90%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 10 °C

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 3am, then showers after 3am. Low around 2. Light and variable wind becoming south southeast 8 to 13 km/h after midnight. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.

    Low: 2 °C

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers and possibly a thunderstorm after noon. High near 8. South southeast wind 5 to 13 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.

    High: 8 °C

    Showers

  • Sunday Night

    Sunday Night: Rain showers before 9pm, then rain, possibly mixed with snow showers between 9pm and 3am, then rain showers after 3am. Low around 1. East southeast wind 5 to 10 km/h becoming south southwest 11 to 16 km/h after midnight. Winds could gust as high as 39 km/h. Chance of precipitation is 100%.

    Low: 1 °C

    Rain/Snow

  • Columbus Day

    Columbus Day: Rain, possibly mixed with snow showers, becoming all rain after noon. Some thunder is also possible. High near 8. Southwest wind 8 to 16 km/h, with gusts as high as 39 km/h. Chance of precipitation is 90%.

    High: 8 °C

    Rain/Snow
    then Showers
    Likely

  • Monday Night

    Monday Night: Rain and snow showers likely, mainly after midnight. Mostly cloudy, with a low around -1. Chance of precipitation is 60%.

    Low: -1 °C

    Rain/Snow
    Likely

  • Tuesday

    Tuesday: A chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 9. Chance of precipitation is 50%.

    High: 9 °C

    Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 18. Breezy, with a southwest wind 24 to 29 km/h, with gusts as high as 47 km/h.
Tonight
A 20 percent chance of showers after 5am. Increasing clouds, with a low around 4. South wind 16 to 23 km/h, with gusts as high as 34 km/h.
Saturday
Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 10. Breezy, with a south southwest wind 22 to 27 km/h decreasing to 14 to 19 km/h in the afternoon. Winds could gust as high as 42 km/h. Chance of precipitation is 90%. New rainfall amounts between 2.5 and 5 mm possible.
Saturday Night
Showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 3am, then showers after 3am. Low around 2. Light and variable wind becoming south southeast 8 to 13 km/h after midnight. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.
Sunday
Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers and possibly a thunderstorm after noon. High near 8. South southeast wind 5 to 13 km/h. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 cm possible.
Sunday Night
Rain showers before 9pm, then rain, possibly mixed with snow showers between 9pm and 3am, then rain showers after 3am. Low around 1. East southeast wind 5 to 10 km/h becoming south southwest 11 to 16 km/h after midnight. Winds could gust as high as 39 km/h. Chance of precipitation is 100%.
Columbus Day
Rain, possibly mixed with snow showers, becoming all rain after noon. Some thunder is also possible. High near 8. Southwest wind 8 to 16 km/h, with gusts as high as 39 km/h. Chance of precipitation is 90%.
Monday Night
Rain and snow showers likely, mainly after midnight. Mostly cloudy, with a low around -1. Chance of precipitation is 60%.
Tuesday
A chance of rain and snow showers before noon, then a chance of rain showers. Some thunder is also possible. Partly sunny, with a high near 9. Chance of precipitation is 50%.
Tuesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around -2. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow showers. Partly sunny, with a high near 7.
Wednesday Night
A chance of rain and snow showers. Partly cloudy, with a low around -3.
Thursday
Mostly sunny, with a high near 9.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewis Lake WY
 44.28°N 110.61°W (Elev. 8107 m)
Last Update:
10:31 am MDT Oct 9, 2026
Forecast Valid:
12pm MDT Oct 9, 2026-6pm MDT Oct 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation