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

Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Sidney-Richland (KSDY)

Lat: 47.7°NLon: 104.2°WElev: 1985.0ft.

Clear

84°F

29°C

Humidity 32%
Wind Speed SE 12 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 27 Aug 11:35 AM MDT
Extended Forecast for

Lambert MT

  • Today

    Today: Sunny, with a high near 90. East southeast wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between 1am and 5am. Mostly cloudy, with a low around 63. East southeast wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 90. Southeast wind around 7 mph becoming northwest in the afternoon. Chance of precipitation is 20%.

    High: 90 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after noon. Mostly cloudy, with a high near 84. Calm wind becoming north 5 to 8 mph in the afternoon.

    High: 84 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Light and variable wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 49. West southwest wind 9 to 17 mph, with gusts as high as 28 mph.

    Low: 49 °F

    Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 78. West wind 16 to 18 mph, with gusts as high as 31 mph.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 90. East southeast wind 11 to 14 mph, with gusts as high as 23 mph.
Tonight
A 30 percent chance of showers, mainly between 1am and 5am. Mostly cloudy, with a low around 63. East southeast wind 9 to 15 mph, with gusts as high as 25 mph.
Friday
A slight chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 90. Southeast wind around 7 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers after noon. Mostly cloudy, with a high near 84. Calm wind becoming north 5 to 8 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 50%.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. Light and variable wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 29 mph. Chance of precipitation is 40%.
Sunday Night
A 40 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 49. West southwest wind 9 to 17 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 78. West wind 16 to 18 mph, with gusts as high as 31 mph.
Monday Night
Mostly clear, with a low around 50. West wind 5 to 13 mph becoming southeast after midnight. Winds could gust as high as 21 mph.
Tuesday
Mostly sunny, with a high near 83. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert MT
 47.69°N 104.62°W (Elev. 2451 ft)
Last Update:
4:01 am MDT Aug 27, 2026
Forecast Valid:
11am MDT Aug 27, 2026-6pm MDT Sep 2, 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