Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from October 10, 06:00 PM MDT until October 12, 06:00 AM MDT

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

unknown precip

30°F

-1°C

Humidity	99%
Wind Speed	WNW 5 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Wind Chill	25°F (-4°C)
Last update	10 Oct 08:15 PM MDT

More Information:

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

Extended Forecast for

7 Miles WNW Grass Range MT

Winter Weather Advisory until October 12, 06:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until October 12, 06:00am
NOW until 6:00am Mon
Winter Weather Advisory
Tonight
Low: 32 °F
Rain then
Rain/Snow
Sunday
High: 35 °F
Snow
Sunday Night
Low: 27 °F
Snow
Columbus Day
High: 36 °F
Rain/Snow
then Slight
Chance
Rain/Snow
Monday Night
Low: 25 °F
Mostly Cloudy
Tuesday
High: 50 °F
Mostly Sunny
Tuesday Night
Low: 30 °F
Mostly Clear
Wednesday
High: 57 °F
Sunny

Detailed Forecast

Tonight

Rain before 2am, then rain, possibly mixed with snow between 2am and 3am, then snow after 3am. Low around 32. North northwest wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Sunday

Snow. High near 35. North northeast wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Sunday Night

Snow. Low around 27. North northeast wind 9 to 11 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Columbus Day

Snow before 10am, then rain and snow. High near 36. North wind 5 to 9 mph becoming light in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Monday Night

Mostly cloudy, with a low around 25. South wind 3 to 5 mph.

Tuesday

Mostly sunny, with a high near 50. Light and variable wind.

Tuesday Night

Mostly clear, with a low around 30. Calm wind becoming southwest around 5 mph.

Wednesday

Sunny, with a high near 57. Light southwest wind.

Wednesday Night

Partly cloudy, with a low around 36.

Thursday

A slight chance of rain. Mostly sunny, with a high near 57.