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, 22-Oct-2025 3:26pm MDT

Thornton
 
This
Afternoon
This Afternoon: Sunny
Sunny
Thursday

Thursday: Partly Sunny
Partly Sunny
Friday

Friday: Slight Chance Rain Showers then Partly Sunny
Slight Chance Rain Showers then Partly Sunny
Saturday

Saturday: Sunny
Sunny
Sunday

Sunday: Partly Sunny
Partly Sunny
Monday

Monday: Mostly Sunny then Slight Chance Rain Showers
Mostly Sunny then Slight Chance Rain Showers
Tuesday

Tuesday: Sunny
Sunny
 
Hi 70 °F Hi 67 °F Hi 62 °F Hi 70 °F Hi 64 °F Hi 60 °F Hi 57 °F  
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Thursday
Night
Thursday Night: Chance Rain Showers
Chance Rain Showers
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday
Night
Saturday Night: Partly Cloudy
Partly Cloudy
Sunday
Night
Sunday Night: Chance Rain Showers
Chance Rain Showers
Monday
Night
Monday Night: Slight Chance Rain And Snow Showers
Slight Chance Rain And Snow Showers
Tuesday
Night
Tuesday Night: Mostly Clear
Mostly Clear
 
Lo 41 °F Lo 43 °F Lo 38 °F Lo 41 °F Lo 39 °F Lo 35 °F Lo 31 °F  

 

This Afternoon
 
Sunny. High near 70, with temperatures falling to around 66 in the afternoon. East northeast wind around 7 mph.
Tonight
 
Partly cloudy, with a low around 41. North northwest wind 2 to 6 mph.
Thursday
 
Partly sunny. High near 67, with temperatures falling to around 63 in the afternoon. East southeast wind 2 to 8 mph, with gusts as high as 16 mph.
Thursday Night
 
A chance of rain showers. Mostly cloudy, with a low around 43. North northwest wind around 7 mph. Chance of precipitation is 30%.
Friday
 
A slight chance of rain showers before noon. Partly sunny, with a high near 62. North wind around 5 mph. Chance of precipitation is 20%.
Friday Night
 
Mostly clear, with a low around 38.
Saturday
 
Sunny, with a high near 70.
Saturday Night
 
Partly cloudy, with a low around 41.
Sunday
 
Partly sunny, with a high near 64.
Sunday Night
 
A chance of rain showers. Mostly cloudy, with a low around 39.
Monday
 
A slight chance of rain showers after noon. Mostly sunny, with a high near 60.
Monday Night
 
A slight chance of rain and snow showers. Partly cloudy, with a low around 35.
Tuesday
 
Sunny, with a high near 57.
Tuesday Night
 
Mostly clear, with a low around 31.

 

Forecast from NOAA-NWS for Thornton, CO.