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 Weather Advisory until October 12, 06:00 AM MDT

Current conditions at

ROCKY BOY (RCBM8)

Lat: 48.25529°NLon: 109.78592°WElev: 3789.0ft.

32°F

0°C

Humidity	96%
Wind Speed	ENE 0 MPH
Barometer	NA
Dewpoint	31°F (-1°C)
Visibility	NA
Last update	11 Oct 09:18 AM MDT

More Information:

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

Extended Forecast for

Big Sandy MT

Winter Weather Advisory October 11, 10:25am until October 12, 06:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory October 11, 10:25am until October 12, 06:00am
NOW until 6:00am Mon
Winter Weather Advisory
Today
High: 37 °F
Rain/Snow
Tonight
Low: 25 °F
Rain/Snow
Columbus Day
High: 41 °F
Rain/Snow
Likely then
Slight Chance
Rain/Snow
Monday Night
Low: 22 °F
Decreasing
Clouds
Tuesday
High: 48 °F
Mostly Sunny
Tuesday Night
Low: 23 °F
Mostly Clear
Wednesday
High: 55 °F
Sunny
Wednesday Night
Low: 30 °F
Partly Cloudy

Detailed Forecast

Today

Rain and snow. High near 37. North northeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than a half inch possible.

Tonight

Rain and snow, becoming all snow after 4am. Low around 25. North northeast wind around 11 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Columbus Day

Snow likely, possibly mixed with rain, mainly before 10am. Cloudy, with a high near 41. North wind 5 to 9 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Monday Night

Cloudy, then gradually becoming partly cloudy, with a low around 22. South wind 5 to 7 mph.

Tuesday

Mostly sunny, with a high near 48. South wind 3 to 7 mph.

Tuesday Night

Mostly clear, with a low around 23. Light south wind.

Wednesday

Sunny, with a high near 55. South wind 3 to 6 mph.

Wednesday Night

Partly cloudy, with a low around 30. South southwest wind around 5 mph.

Thursday

Mostly sunny, with a high near 54.