Prolonged Heavy Rain and Snowfall Event for the Northwest U.S.

A prolonged atmospheric river event will continue to bring moderate to heavy rain to northern and central California through the Pacific Northwest with mountain snow in the Cascades and northern Rockies today into next week. Read More >

Hazardous Weather Conditions

Winter Storm Watch in effect from February 3, 11:00 AM MST until February 5, 11:00 AM MST
Cold Weather Advisory in effect from February 2, 05:00 PM MST until February 4, 11:00 AM MST

Current conditions at

ROCKY BOY (ROCM8)

Lat: 48.17478°NLon: 109.64728°WElev: 4700.0ft.

18°F

-8°C

Humidity	NA
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	NA

More Information:

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

Extended Forecast for

4 Miles SSW Lloyd MT

Winter Storm Watch February 3, 11:00am until February 5, 11:00am

Cold Weather Advisory February 2, 05:00pm until February 4, 11:00am

Click here for hazard details and duration

Winter Storm Watch

Cold Weather Advisory

Today
High: 7 °F⇓
Snow Likely
Tonight
Low: -13 °F
Snow Likely
then Mostly
Cloudy
Monday
High: -8 °F
Chance Snow
Monday Night
Low: -9 °F
Snow
Tuesday
High: -5 °F
Snow
Tuesday Night
Low: -8 °F
Snow Likely
Wednesday
High: -2 °F
Snow Likely
then Chance
Snow
Wednesday Night
Low: -9 °F
Partly Cloudy
Thursday
High: 10 °F
Mostly Sunny

Detailed Forecast

Today

Snow likely, mainly after 4pm. Cloudy, with a temperature falling to around 3 by 5pm. Wind chill values as low as -15. South southeast wind around 14 mph becoming east northeast in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.

Tonight

Snow likely, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around -13. Wind chill values as low as -35. Northwest wind around 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Monday

A 50 percent chance of snow. Mostly cloudy and cold, with a high near -8. Wind chill values as low as -35. Northwest wind 9 to 11 mph becoming northeast in the afternoon. New snow accumulation of less than a half inch possible.

Monday Night

Snow. Low around -9. Wind chill values as low as -30. East wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Tuesday

Snow. High near -5. East wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around -8. East wind around 11 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Wednesday

Snow likely, mainly before 11am. Mostly cloudy and cold, with a high near -2. East wind around 11 mph becoming west northwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night

Partly cloudy, with a low around -9. West wind around 14 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 10.

Thursday Night

A slight chance of snow. Mostly cloudy, with a low around 1.

Friday

A chance of snow. Partly sunny, with a high near 11.

Friday Night

A slight chance of snow. Mostly cloudy, with a low around 3.

Saturday

Partly sunny, with a high near 12.