Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77° N Lon: 99.32° W Elev: 1693 ft.

Fair

38°F

3°C

Humidity 84%
Wind Speed E 6 mph
Barometer 29.98 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 24 Dec 4:55 am CST
Detailed forecast for

Lyman County

Today
Partly sunny. Highs in the upper 40s. West winds 5 to 10 mph, becoming north this afternoon.
Tonight
Mostly cloudy. Lows in the upper 20s. Northeast winds 5 to 10 mph, becoming east 10 to 15 mph after midnight.
Christmas Day
Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night
Partly cloudy. Lows in the lower 30s. West winds 10 to 15 mph.
Friday
Partly sunny. Highs in the mid 50s. South winds 10 to 15 mph.
Friday Night And Saturday
Partly cloudy and breezy. Lows in the upper 30s. Highs in the lower 50s.
Saturday Night
Mostly cloudy in the evening, then becoming partly cloudy. Blustery and much colder with lows around 10 above.
Sunday
Mostly sunny and windy. Much colder with highs around 20.
Sunday Night
Mostly clear in the evening, then becoming partly cloudy. Lows 5 to 10 above.
Monday
Mostly sunny. Highs in the upper 20s.
Monday Night
Mostly cloudy. Not as cold with lows 15 to 20. Temperature rising into the mid 20s after midnight.
Tuesday
Partly sunny. A slight chance of rain and snow in the afternoon. Not as cold with highs in the lower 40s. Chance of precipitation 20 percent.



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437 AM CST Wed Dec 24 2025
 
 

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