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

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

32°F

0°C

Humidity	73%
Wind Speed	SSE 5 MPH
Barometer	NA
Dewpoint	24°F (-4°C)
Visibility	NA
Wind Chill	27°F (-3°C)
Last update	11 Oct 09:30 AM MDT

More Information:

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

Extended Forecast for

Garrison MT

Winter Storm Warning until October 12, 06:00am

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning until October 12, 06:00am
NOW until 6:00am Mon
Winter Storm Warning
Today
High: 36 °F
Chance Snow
then Snow
Likely
Tonight
Low: 18 °F
Snow
Columbus Day
High: 41 °F
Chance Snow
then Mostly
Sunny
Monday Night
Low: 17 °F
Patchy Fog
Tuesday
High: 47 °F
Patchy Fog
Tuesday Night
Low: 18 °F
Areas Fog
Wednesday
High: 52 °F
Patchy Fog
then Sunny
Wednesday Night
Low: 23 °F
Mostly Clear

Detailed Forecast

Today

Snow likely, mainly after 4pm. Cloudy, with a high near 36. East northeast wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.

Tonight

Snow, mainly before 5am. Low around 18. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Columbus Day

A 30 percent chance of snow, mainly before 7am. Snow level rising to 5900 feet in the afternoon. Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind. New snow accumulation of less than a half inch possible.

Monday Night

Patchy fog after 8pm. Otherwise, partly cloudy, with a low around 17. Calm wind.

Tuesday

Patchy fog before 1pm. Otherwise, mostly sunny, with a high near 47. Calm wind.

Tuesday Night

Areas of fog after 10pm. Otherwise, mostly clear, with a low around 18.

Wednesday

Patchy fog before 9am. Otherwise, sunny, with a high near 52.

Wednesday Night

Mostly clear, with a low around 23.

Thursday

Sunny, with a high near 54.