Forecast for Thornton, Colorado

Today's Weather Story   
48 Hour Graphical Forecast   
National Weather Service Forecast for: Thornton, CO
Issued by: National Weather Service Denver/Boulder, CO
Updated: Fri, 26-Dec-2025 3:26am MST

Thornton
 
Today

Today: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny then Slight Chance Light Rain
Mostly Sunny then Slight Chance Light Rain
Sunday

Sunday: Light Snow Likely
Light Snow Likely
Monday

Monday: Sunny
Sunny
Tuesday

Tuesday: Sunny
Sunny
Wednesday

Wednesday: Sunny
Sunny
New Year's
Day
New Year's Day: Partly Sunny
Partly Sunny
 
Hi 64 °F Hi 59 °F Hi 30 °F Hi 40 °F Hi 47 °F Hi 53 °F Hi 46 °F  
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Rain And Snow Likely
Rain And Snow Likely
Sunday
Night
Sunday Night: Mostly Clear
Mostly Clear
Monday
Night
Monday Night: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
 
Lo 35 °F Lo 21 °F Lo 12 °F Lo 19 °F Lo 24 °F Lo 26 °F Lo 27 °F  

 

Today
 
Mostly sunny. High near 64, with temperatures falling to around 56 in the afternoon. South southwest wind 6 to 9 mph.
Tonight
 
Partly cloudy. Low around 35, with temperatures rising to around 37 overnight. South southwest wind around 7 mph.
Saturday
 
A slight chance of rain after 5pm. Mostly sunny. High near 59, with temperatures falling to around 51 in the afternoon. West wind 6 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
Saturday Night
 
A slight chance of rain before 8pm, then rain and snow likely. Mostly cloudy, with a low around 21. North northeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
Sunday
 
Snow likely before 5pm. Partly sunny, with a high near 30. North northwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
 
Mostly clear, with a low around 12.
Monday
 
Sunny, with a high near 40.
Monday Night
 
Mostly clear, with a low around 19.
Tuesday
 
Sunny, with a high near 47.
Tuesday Night
 
Mostly clear, with a low around 24.
Wednesday
 
Sunny, with a high near 53.
Wednesday Night
 
Mostly cloudy, with a low around 26.
New Year's Day
 
Partly sunny, with a high near 46.
Thursday Night
 
Partly cloudy, with a low around 27.

 

Forecast from NOAA-NWS for Thornton, CO.