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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

JUDITH PEAK (JPKM8)

Lat: 47.21753°NLon: 109.22281°WElev: 6428.0ft.

NA

61°F

16°C

Humidity 48%
Wind Speed WSW 14 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 29 Aug 02:52 AM MDT
Extended Forecast for

Roy MT

  • Overnight

    Overnight: A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 63. West wind around 10 mph.

    Low: 63 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 77. West wind 7 to 11 mph becoming south in the morning. Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 54. South southwest wind 9 to 14 mph becoming west 16 to 21 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms before 4pm, then a slight chance of showers between 4pm and 5pm. High near 66. Breezy, with a west wind 18 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.

    High: 66 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph.

    Low: 49 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 74. West southwest wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Northwest wind 5 to 8 mph becoming south after midnight.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 63. West wind around 10 mph.
Saturday
A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 77. West wind 7 to 11 mph becoming south in the morning. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 54. South southwest wind 9 to 14 mph becoming west 16 to 21 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%.
Sunday
Showers and thunderstorms before 4pm, then a slight chance of showers between 4pm and 5pm. High near 66. Breezy, with a west wind 18 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 80%.
Sunday Night
Mostly clear, with a low around 49. Breezy, with a west southwest wind 16 to 22 mph, with gusts as high as 32 mph.
Monday
Sunny, with a high near 74. West southwest wind 10 to 18 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 53. Northwest wind 5 to 8 mph becoming south after midnight.
Tuesday
Sunny, with a high near 84. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 56.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Roy MT
 47.33°N 108.97°W (Elev. 3566 ft)
Last Update:
2:52 am MDT Aug 29, 2026
Forecast Valid:
3am MDT Aug 29, 2026-6pm MDT Sep 4, 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