Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Hazardous Weather Conditions

Winter Storm Warning until October 12, 06:00 AM MDT

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

light snow,mist

30°F

-1°C

Humidity	100%
Wind Speed	N 13 MPH
Barometer	30.02 in (1016.59 mb)
Dewpoint	30°F (-1°C)
Visibility	1.25 mi
Wind Chill	20°F (-7°C)
Last update	11 Oct 06:15 AM MDT

More Information:

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

Extended Forecast for

Sun Prairie MT

Winter Storm Warning October 11, 06:43am until October 12, 06:00am

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning October 11, 06:43am until October 12, 06:00am
NOW until 6:00am Mon
Winter Storm Warning
Today
High: 34 °F
Rain/Snow
Tonight
Low: 25 °F
Rain/Snow
Columbus Day
High: 37 °F
Rain/Snow
Likely then
Cloudy
Monday Night
Low: 20 °F
Mostly Cloudy
Tuesday
High: 43 °F
Sunny
Tuesday Night
Low: 21 °F
Mostly Clear
Wednesday
High: 48 °F
Sunny
Wednesday Night
Low: 27 °F
Partly Cloudy

Detailed Forecast

Today

Snow, possibly mixed with rain. High near 34. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.

Tonight

Snow, possibly mixed with rain, becoming all snow after 4am. Low around 25. North northeast wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Columbus Day

Snow likely, possibly mixing with rain after 9am, then gradually ending. Cloudy, with a high near 37. North wind around 5 mph becoming calm in the morning. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Monday Night

Mostly cloudy, with a low around 20. Light south wind.

Tuesday

Sunny, with a high near 43. Southwest wind 3 to 5 mph.

Tuesday Night

Mostly clear, with a low around 21. Calm wind becoming south southwest around 5 mph after midnight.

Wednesday

Sunny, with a high near 48. South southwest wind around 7 mph.

Wednesday Night

Partly cloudy, with a low around 27. Southwest wind 6 to 8 mph.

Thursday

Mostly sunny, with a high near 51.