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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Gillette, Gillette-Campbell County Airport (KGCC)

Lat: 44.34°NLon: 105.54°WElev: 4364ft.

Fair

56°F

13°C

Humidity 97%
Wind Speed Vrbl 3 mph
Barometer 30.12 in (1016.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Sep 10:53 pm MDT
Extended Forecast for

Sleepy Hollow WY

  • Tonight

    Tonight: Showers and thunderstorms before 3am, then a slight chance of showers. Low around 55. South wind 5 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 90%.

    Low: 55 °F

    T-storms

  • Saturday

    Saturday: A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 70. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.

    High: 70 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 51. North wind around 7 mph becoming south in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, with thunderstorms also possible after noon. High near 62. South wind 5 to 8 mph becoming north in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    High: 62 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 47. North wind 5 to 7 mph becoming south after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 67. South wind 5 to 9 mph, with gusts as high as 22 mph.

    High: 67 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms before 3am, then a slight chance of showers. Low around 55. South wind 5 to 8 mph, with gusts as high as 17 mph. Chance of precipitation is 90%.
Saturday
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Cloudy, with a high near 70. Light and variable wind becoming north 5 to 7 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 51. North wind around 7 mph becoming south in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Sunday
Showers, with thunderstorms also possible after noon. High near 62. South wind 5 to 8 mph becoming north in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Sunday Night
Showers likely and possibly a thunderstorm before 9pm, then showers likely between 9pm and midnight. Mostly cloudy, with a low around 47. North wind 5 to 7 mph becoming south after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 67. South wind 5 to 9 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sleepy Hollow WY
 44.25°N 105.42°W (Elev. 4600 ft)
Last Update:
9:36 pm MDT Sep 18, 2026
Forecast Valid:
11pm MDT Sep 18, 2026-6pm MDT Sep 25, 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