Dangerous Cold Persists through Monday; Wintry Weather from the Northern Plains to the Great Lakes

Bitter cold temperatures and dangerous wind chills will persist from Florida to the Northeast through Monday. Daily record low temperatures are forecast across the Southeast and Florida, with some all-time February low temperature records possible across Florida. An Alberta clipper will spread wintry precipitation across the Northern Plains today and into the upper Great Lakes into tonight. Read More >

Current conditions at

Vance Brand Airport (KLMO)

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

Fair

52°F

11°C

Humidity 19%
Wind Speed W 12 G 18 mph
Barometer 30.12 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 1 Feb 7:15 pm MST
Extended Forecast for

Longmont CO

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Southwest wind 6 to 8 mph.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind 6 to 9 mph becoming southeast in the afternoon.

    High: 56 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 25. North northwest wind 5 to 7 mph becoming west southwest after midnight.

    Low: 25 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. West southwest wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and 11pm, then a slight chance of snow after 11pm.  Mostly cloudy, with a low around 26. North northwest wind 5 to 8 mph becoming west after midnight.  Chance of precipitation is 20%.

    Low: 26 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 30. Southwest wind 6 to 8 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 56. West northwest wind 6 to 9 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 25. North northwest wind 5 to 7 mph becoming west southwest after midnight.
Tuesday
Partly sunny, with a high near 52. West southwest wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and 11pm, then a slight chance of snow after 11pm. Mostly cloudy, with a low around 26. North northwest wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 51.
Wednesday Night
Mostly clear, with a low around 29.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 30.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
2:06 pm MST Feb 1, 2026
7pm MST Feb 1, 2026-6pm MST Feb 8, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database