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.

34°F

1°C

Humidity	92%
Wind Speed	E 2 MPH
Barometer	NA
Dewpoint	32°F (0°C)
Visibility	NA
Last update	11 Oct 12:18 PM MDT

More Information:

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

Extended Forecast for

2 Miles SE Box Elder MT

Winter Weather Advisory October 11, 01:05pm until October 12, 06:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory October 11, 01:05pm until October 12, 06:00am
NOW until 6:00am Mon
Winter Weather Advisory
This Afternoon
High: 37 °F
Rain/Snow
Tonight
Low: 25 °F
Snow then
Rain/Snow
Columbus Day
High: 36 °F
Rain/Snow
Likely then
Cloudy
Monday Night
Low: 21 °F
Decreasing
Clouds
Tuesday
High: 45 °F
Mostly Sunny
Tuesday Night
Low: 23 °F
Mostly Clear
Wednesday
High: 57 °F
Sunny
Wednesday Night
Low: 29 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Rain and snow, becoming all snow after 5pm. High near 37. Northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

Tonight

Snow before 5am, then snow likely, possibly mixed with rain. Low around 25. North northeast wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Columbus Day

Rain and snow likely, mainly before 9am. Cloudy, with a high near 36. North northeast wind 5 to 8 mph becoming light and variable. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Monday Night

Cloudy, then gradually becoming partly cloudy, with a low around 21. South wind 5 to 7 mph.

Tuesday

Mostly sunny, with a high near 45. South southwest wind 5 to 8 mph.

Tuesday Night

Mostly clear, with a low around 23. Calm wind becoming south around 5 mph.

Wednesday

Sunny, with a high near 57. South wind 3 to 8 mph.

Wednesday Night

Partly cloudy, with a low around 29. South southwest wind 3 to 6 mph.

Thursday

Sunny, with a high near 56.