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

Big Timber Airport (K6S0)

Lat: 45.80647° N Lon: 109.97826° W Elev: 4494.0 ft.

Clear

86°F

30°C

Humidity 20%
Wind Speed SW 4 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 03:55 PM MDT
Detailed forecast for

Northern Sweet Grass

Tonight
Mostly cloudy. Chance of showers and slight chance of thunderstorms early in the evening, then chance of showers late in the evening. Lows in the upper 50s. West winds 5 to 10 mph. Chance of precipitation 50 percent.
Friday
Mostly cloudy. Slight chance of rain showers late in the morning. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Southwest winds 5 to 10 mph. Chance of precipitation 50 percent.
Friday Night
Mostly cloudy. Chance of rain showers early in the evening, then slight chance of rain showers late in the evening. Chance of rain showers overnight. Lows in the upper 50s. Southwest winds 5 to 10 mph. Chance of precipitation 40 percent.
Saturday
Chance of rain showers in the morning, then rain showers likely and chance of thunderstorms in the afternoon. Highs in the upper 70s. West winds 5 to 15 mph. Chance of precipitation 60 percent.
Saturday Night
Slight chance of thunderstorms early in the evening. Rain showers likely in the evening, then chance of rain showers overnight. Lows in the lower 50s. West winds 5 to 10 mph. Chance of precipitation 60 percent.
Sunday
Partly sunny. Chance of rain showers in the morning, then chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 50 percent.
Sunday Night
Mostly clear. Lows in the mid 40s.
Monday
Sunny. Highs around 80.
Monday Night
Mostly clear. Lows around 50.
Tuesday
Sunny. Highs in the lower 80s.
Tuesday Night
Partly cloudy. A 20 percent chance of rain showers in the evening. Lows in the lower 50s.
Wednesday
Sunny. Highs in the lower 80s.
Wednesday Night
Partly cloudy. Lows around 50.
Thursday
Mostly sunny. Highs in the upper 70s.



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350 PM MDT Thu Aug 27 2026
 
 

Additional Resources

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