Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Cold Weather Advisory in effect from December 27, 10:00 AM MST until December 28, 11:00 AM MST

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

37°F

3°C

Humidity	40%
Wind Speed	SW 20 MPH
Barometer	29.45 in (997.29 mb)
Dewpoint	16°F (-9°C)
Visibility	10.00 mi
Wind Chill	27°F (-3°C)
Last update	27 Dec 02:20 AM MST

More Information:

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

Extended Forecast for

5 Miles NNE Moore MT

Cold Weather Advisory December 27, 10:00am until December 28, 11:00am

Click here for hazard details and duration

Cold Weather Advisory

Overnight
Low: 34 °F
Slight Chance
Snow
Saturday
High: 15 °F⇓
Blustery.
Chance Snow
then Mostly
Sunny
Saturday Night
Low: 2 °F
Decreasing
Clouds
Sunday
High: 21 °F
Sunny
Sunday Night
Low: 10 °F
Mostly Clear
Monday
High: 42 °F
Mostly Sunny
Monday Night
Low: 25 °F
Mostly Cloudy
Tuesday
High: 48 °F
Partly Sunny
Tuesday Night
Low: 27 °F
Mostly Cloudy
then Slight
Chance Rain

Detailed Forecast

Overnight

A 20 percent chance of snow after 5am. Partly cloudy, with a steady temperature around 34. Southwest wind around 15 mph, with gusts as high as 22 mph.

Saturday

A 30 percent chance of snow, mainly before 10am. Cloudy, then becoming mostly sunny during the afternoon, with a temperature falling to around 4 by 5pm. Wind chill values as low as -20. Blustery, with a north northwest wind 20 to 25 mph, with gusts as high as 36 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Mostly cloudy, then gradually becoming clear, with a steady temperature around 2. Wind chill values as low as -20. West northwest wind 7 to 16 mph, with gusts as high as 23 mph.

Sunday

Sunny, with a high near 21. Wind chill values as low as -10. South southwest wind around 6 mph.

Sunday Night

Mostly clear, with a low around 10. South southwest wind around 7 mph.

Monday

Mostly sunny, with a high near 42. South southwest wind around 7 mph.

Monday Night

Mostly cloudy, with a low around 25. Southwest wind around 7 mph.

Tuesday

Partly sunny, with a high near 48. Southwest wind around 6 mph.

Tuesday Night

A slight chance of rain after 5am. Mostly cloudy, with a low around 27.