Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

Lat: 47.47333°NLon: 111.38222°WElev: 3675.0ft.

Clear

52°F

11°C

Humidity	40%
Wind Speed	SW 17 MPH
Barometer	29.64 in (1003.73 mb)
Dewpoint	28°F (-2°C)
Visibility	10.00 mi
Last update	25 Dec 06:30 PM MST

More Information:

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

Extended Forecast for

9 Miles S Ulm MT

Tonight
Low: 33 °F
Mostly Cloudy
then Slight
Chance Rain
Friday
High: 50 °F
Slight Chance
Rain then
Slight Chance
Rain/Snow and
Breezy
Friday Night
Low: 9 °F
Chance Snow
Saturday
High: 20 °F
Snow then
Chance Snow
Saturday Night
Low: 0 °F
Partly Cloudy
Sunday
High: 29 °F
Mostly Sunny
Sunday Night
Low: 19 °F
Mostly Clear
Monday
High: 40 °F
Mostly Sunny
Monday Night
Low: 28 °F
Mostly Cloudy

Detailed Forecast

Tonight

A slight chance of rain between midnight and 1am. Mostly cloudy, with a low around 33. South wind 8 to 10 mph. Chance of precipitation is 20%.

Friday

A slight chance of rain, mixing with snow after 2pm, then gradually ending. Mostly sunny, with a high near 50. Breezy, with a south southeast wind 10 to 15 mph becoming southwest 20 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 20%.

Friday Night

A 30 percent chance of snow after 11pm. Increasing clouds, with a low around 9. South wind around 15 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.

Saturday

Snow, mainly before 11am. High near 20. Wind chill values as low as -15. North wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a low around 0. North northwest wind 5 to 8 mph becoming calm in the evening.

Sunday

Mostly sunny, with a high near 29. Light south southwest wind becoming southwest 6 to 11 mph in the morning.

Sunday Night

Mostly clear, with a low around 19. South southwest wind around 11 mph, with gusts as high as 18 mph.

Monday

Mostly sunny, with a high near 40. South southwest wind 13 to 17 mph, with gusts as high as 26 mph.

Monday Night

Mostly cloudy, with a low around 28.

Tuesday

Partly sunny, with a high near 46.