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: Wed, 12-Nov-2025 3:26am MST

Thornton
 
This
Afternoon
This Afternoon: Partly Sunny
Partly Sunny
Thursday

Thursday: Mostly Sunny
Mostly Sunny
Friday

Friday: Mostly Sunny
Mostly Sunny
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Sunday

Sunday: Mostly Sunny then Chance Rain Showers
Mostly Sunny then Chance Rain Showers
Monday

Monday: Chance Rain Showers then Partly Sunny
Chance Rain Showers then Partly Sunny
Tuesday

Tuesday: Chance Rain And Snow Showers
Chance Rain And Snow Showers
 
Hi 70 °F Hi 74 °F Hi 73 °F Hi 69 °F Hi 63 °F Hi 56 °F Hi 52 °F  
 
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Partly Cloudy then Slight Chance Rain And Snow Showers
Partly Cloudy then Slight Chance Rain And Snow Showers
Tuesday
Night
Tuesday Night: Chance Rain And Snow Showers
Chance Rain And Snow Showers
 
Lo 39 °F Lo 42 °F Lo 44 °F Lo 38 °F Lo 38 °F Lo 32 °F Lo 30 °F  

 

This Afternoon
 
Partly sunny. High near 70, with temperatures falling to around 62 in the afternoon. East northeast wind around 6 mph.
Tonight
 
Mostly cloudy. Low around 39, with temperatures rising to around 42 overnight. West southwest wind 2 to 6 mph.
Thursday
 
Mostly sunny. High near 74, with temperatures falling to around 65 in the afternoon. West southwest wind 6 to 9 mph.
Thursday Night
 
Mostly clear, with a low around 42. Southwest wind around 8 mph.
Friday
 
Mostly sunny, with a high near 73. South southwest wind 6 to 9 mph.
Friday Night
 
Partly cloudy, with a low around 44.
Saturday
 
Mostly sunny, with a high near 69.
Saturday Night
 
Partly cloudy, with a low around 38.
Sunday
 
A chance of rain showers after 5pm. Mostly sunny, with a high near 63.
Sunday Night
 
A chance of rain showers. Mostly cloudy, with a low around 38.
Monday
 
A chance of rain showers before 11am. Partly sunny, with a high near 56.
Monday Night
 
A slight chance of rain and snow showers after 5am. Partly cloudy, with a low around 32.
Tuesday
 
A chance of rain and snow showers. Partly sunny, with a high near 52.
Tuesday Night
 
A chance of rain and snow showers. Mostly cloudy, with a low around 30.

 

Forecast from NOAA-NWS for Thornton, CO.