Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for portions of the central and southern High Plains. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from April 22, 06:00 PM MDT until April 24, 12:00 PM MDT

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

84°F

29°C

Humidity	19%
Wind Speed	SE 5 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Heat Index	81°F (27°C)
Last update	21 Apr 03:15 PM MDT

More Information:

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

Extended Forecast for

Greenough MT

Winter Weather Advisory April 22, 06:00pm until April 24, 12:00pm

Click here for hazard details and duration

Winter Weather Advisory

Tonight
Low: 41 °F
Decreasing
Clouds
Wednesday
High: 59 °F
Chance Rain
then Showers
Wednesday Night
Low: 32 °F
Rain/Snow
Thursday
High: 44 °F
Rain/Snow
Thursday Night
Low: 23 °F
Rain/Snow
Likely then
Chance Snow
and Patchy
Fog
Friday
High: 41 °F
Snow Likely
and Patchy
Fog
Friday Night
Low: 16 °F
Slight Chance
Snow then
Mostly Cloudy
Saturday
High: 45 °F
Mostly Sunny
then Slight
Chance
Rain/Snow
Saturday Night
Low: 19 °F
Mostly Cloudy

Detailed Forecast

Tonight

Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Calm wind.

Wednesday

Rain likely and possibly a thunderstorm before 1pm, then showers and possibly a thunderstorm between 1pm and 3pm, then rain after 3pm. High near 59. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

Wednesday Night

Rain and snow before midnight, then rain between midnight and 3am, then rain, possibly mixed with snow after 3am. Snow level 5700 feet lowering to 4600 feet after midnight . Low around 32. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday

Rain and snow. Some thunder is also possible. Snow level 4000 feet. High near 44. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain and snow likely, becoming all snow after 9pm. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 23. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Friday

Snow likely. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 41. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Friday Night

A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.

Saturday

A slight chance of snow after noon, mixing with rain after 3pm. Partly sunny, with a high near 45.

Saturday Night

Mostly cloudy, with a low around 19.

Sunday

A slight chance of snow between noon and 3pm, then a slight chance of rain after 3pm. Partly sunny, with a high near 47.

Sunday Night

Mostly cloudy, with a low around 22.

Monday

A slight chance of rain. Snow level rising to 5000 feet in the afternoon. Mostly sunny, with a high near 53.