National Weather Service Forecast for: Longmont CO
Issued by: National Weather Service Denver-Boulder, CO
Updated: 1:51 pm MST Feb 2, 2026
 
Tonight

Tonight: Increasing clouds, with a low around 25. West wind 3 to 6 mph.
Increasing
Clouds

Tuesday

Tuesday: Partly sunny, with a high near 54. Breezy, with a light and variable wind becoming north northwest 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Partly Sunny
then Partly
Sunny and
Breezy
Tuesday
Night
Tuesday Night: A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 11pm.  Partly cloudy, with a low around 24. North wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.
Slight Chance
Rain/Snow
then Partly
Cloudy
Wednesday

Wednesday: Sunny, with a high near 50. Light and variable wind becoming south around 5 mph in the morning.
Sunny

Wednesday
Night
Wednesday Night: Mostly clear, with a low around 28. West wind around 6 mph.
Mostly Clear

Thursday

Thursday: Sunny, with a high near 63.
Sunny

Thursday
Night
Thursday Night: Mostly clear, with a low around 31.
Mostly Clear

Friday

Friday: Sunny, with a high near 61.
Sunny

Friday
Night
Friday Night: Partly cloudy, with a low around 31.
Partly Cloudy

Lo 25 °F Hi 54 °F Lo 24 °F Hi 50 °F Lo 28 °F Hi 63 °F Lo 31 °F Hi 61 °F Lo 31 °F

Hazardous Weather Outlook
 

Tonight
 
Increasing clouds, with a low around 25. West wind 3 to 6 mph.
Tuesday
 
Partly sunny, with a high near 54. Breezy, with a light and variable wind becoming north northwest 10 to 15 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
 
A slight chance of rain before 8pm, then a slight chance of snow between 8pm and 11pm. Partly cloudy, with a low around 24. North wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Wednesday
 
Sunny, with a high near 50. Light and variable wind becoming south around 5 mph in the morning.
Wednesday Night
 
Mostly clear, with a low around 28. West wind around 6 mph.
Thursday
 
Sunny, with a high near 63.
Thursday Night
 
Mostly clear, with a low around 31.
Friday
 
Sunny, with a high near 61.
Friday Night
 
Partly cloudy, with a low around 31.
Saturday
 
Mostly sunny, with a high near 61.
Saturday Night
 
Partly cloudy, with a low around 30.
Sunday
 
Sunny, with a high near 60.
Sunday Night
 
Partly cloudy, with a low around 30.
Monday
 
A slight chance of rain. Mostly sunny, with a high near 58.

 

Forecast from NOAA-NWS for Longmont CO.