Rare Southern U.S. Winter Storm; Dangerous Cold Weather For Much of the Eastern U.S.; Critical Fire Weather for Southern California

A rare winter storm impacting the Southern U.S. will move offshore Wednesday morning. Behind the storm, arctic air will continue encompassing the eastern two-thirds of the Nation with only a slow return to normal temperatures expected by the end of the week. Moderate to strong Santa Ana winds and low humidity will maintain Critical fire weather conditions in southern California into Thursday. Read More >

Current conditions at

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Overcast

28°F

-2°C

Humidity	54%
Wind Speed	W 25 MPH
Barometer	30.22 in (1023.37 mb)
Dewpoint	14°F (-10°C)
Visibility	10.00 mi
Wind Chill	13°F (-11°C)
Last update	21 Jan 10:35 PM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Helena MT

Tonight
Low: 17 °F
Mostly Cloudy
Wednesday
High: 31 °F
Mostly Cloudy
Wednesday Night
Low: 8 °F
Partly Cloudy
Thursday
High: 32 °F
Increasing
Clouds
Thursday Night
Low: 19 °F
Chance Snow
Friday
High: 27 °F
Snow
Friday Night
Low: 9 °F
Chance Snow
Saturday
High: 22 °F
Partly Sunny
Saturday Night
Low: 1 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly cloudy, with a low around 17. West wind 13 to 15 mph, with gusts as high as 29 mph.

Wednesday

Mostly cloudy, with a high near 31. West wind 7 to 10 mph, with gusts as high as 21 mph.

Wednesday Night

Partly cloudy, with a low around 8. Wind chill values as low as zero. South southwest wind around 6 mph.

Thursday

Increasing clouds, with a high near 32. Wind chill values as low as zero. South wind 6 to 8 mph.

Thursday Night

A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 19. Southwest wind 5 to 7 mph becoming calm after midnight. New snow accumulation of less than one inch possible.

Friday

Snow. High near 27. Calm wind becoming north northwest 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Friday Night

A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 9. North northwest wind around 6 mph becoming calm in the evening. Little or no snow accumulation expected.

Saturday

Partly sunny, with a high near 22. Light north wind.

Saturday Night

Mostly clear, with a low around 1.

Sunday

Mostly sunny, with a high near 24.

Sunday Night

Partly cloudy, with a low around 10.

Monday

Sunny, with a high near 33.

Monday Night

Mostly clear, with a low around 15.