Heavy Snow from the Midwest into the Great Lakes; Locally Heavy Rain in the Western Gulf Coast

A significant winter storm will produce a broad area of moderate to heavy snow from the Midwest through the western Great Lakes. Significant snow accumulations of 6-12 inches, and locally more than 1 foot, and gusty wind may cause hazardous travel conditions. Thunderstorms, some severe, and showers may produce locally heavy rain and isolated flash flooding along the western Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Longmont CO

  • Overnight

    Overnight: Mostly cloudy, with a low around 9. Light north wind.

    Low: 9 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of snow after 11am.  Mostly cloudy, with a high near 28. Light and variable wind becoming north northeast around 5 mph.

    High: 28 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow, mainly before 11pm.  Mostly cloudy, with a low around 14. Light north wind.  New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Chance Snow
    then Slight
    Chance Snow

  • Monday

    Monday: Sunny, with a high near 38. Light and variable wind becoming southeast around 6 mph in the afternoon.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. West wind 3 to 5 mph.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after 11pm.  Mostly cloudy, with a low around 23.

    Low: 23 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: A chance of snow.  Mostly cloudy, with a high near 34.

    High: 34 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 9. Light north wind.
Sunday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 28. Light and variable wind becoming north northeast around 5 mph.
Sunday Night
A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 14. Light north wind. New snow accumulation of less than a half inch possible.
Monday
Sunny, with a high near 38. Light and variable wind becoming southeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 18. West wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 23.
Wednesday
A chance of snow. Mostly cloudy, with a high near 34.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
2:11 pm MST Nov 29, 2025
12am MST Nov 30, 2025-6pm MST Dec 6, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database