Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Vance Brand Airport (KLMO)

Lat: 40.16°NLon: 105.16°WElev: 5039ft.

Fair

32°F

0°C

Humidity	64%
Wind Speed	W 5 mph
Barometer	29.78 in
Dewpoint	21°F (-6°C)
Visibility	10.00 mi
Wind Chill	27°F (-3°C)
Last update	27 Dec 7:55 am MST

More Information:

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

Extended Forecast for

Longmont CO

Today
High: 58 °F
Mostly Sunny
Tonight
Low: 19 °F
Rain/Snow
Likely then
Snow Likely
Sunday
High: 33 °F
Chance Snow
then Mostly
Sunny
Sunday Night
Low: 13 °F
Mostly Clear
Monday
High: 40 °F
Sunny
Monday Night
Low: 19 °F
Mostly Clear
Tuesday
High: 47 °F
Sunny
Tuesday Night
Low: 25 °F
Mostly Clear
Wednesday
High: 53 °F
Mostly Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 58. West southwest wind 5 to 8 mph, with gusts as high as 21 mph.

Tonight

A chance of rain and snow before 11pm, then snow likely. Mostly cloudy, with a low around 19. West northwest wind 6 to 8 mph becoming northeast in the evening. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

Sunday

A 50 percent chance of snow before 11am. Cloudy through mid morning, then gradual clearing, with a high near 33. North northeast wind 6 to 8 mph becoming west southwest in the afternoon. Winds could gust as high as 17 mph. New snow accumulation of less than a half inch possible.

Sunday Night

Mostly clear, with a low around 13. West wind around 6 mph becoming calm after midnight.

Monday

Sunny, with a high near 40. Light and variable wind.

Monday Night

Mostly clear, with a low around 19.

Tuesday

Sunny, with a high near 47.

Tuesday Night

Mostly clear, with a low around 25.

Wednesday

Mostly sunny, with a high near 53.