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: Mon, 24-Aug-2026 12:46pm MDT

Thornton
 
  Tuesday

Tuesday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Wednesday

Wednesday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Thursday

Thursday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Friday

Friday: Sunny
Sunny
Saturday

Saturday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Sunday

Sunday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Monday

Monday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
  Hi 89 °F Hi 86 °F Hi 89 °F Hi 95 °F Hi 95 °F Hi 91 °F Hi 89 °F
 
Tonight

Tonight: Slight Chance Showers And Thunderstorms then Mostly Cloudy
Slight Chance Showers And T-Storms then Mostly Cloudy
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Wednesday
Night
Wednesday Night: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Thursday
Night
Thursday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Friday
Night
Friday Night: Partly Cloudy
Partly Cloudy
Saturday
Night
Saturday Night: Slight Chance Showers And Thunderstorms then Mostly Cloudy
Slight Chance Showers And T-Storms then Mostly Cloudy
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms then Mostly Cloudy
Chance Showers And T-Storms then Mostly Cloudy
 
Lo 62 °F Lo 60 °F Lo 60 °F Lo 61 °F Lo 63 °F Lo 62 °F Lo 61 °F  

Air Quality Alert issued August 24 at 4:10PM MDT
 

Tonight
 
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy. Low around 62, with temperatures rising to around 64 overnight. West southwest wind 3 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 20%.
Tuesday
 
A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 89, with temperatures falling to around 83 in the afternoon. North wind 3 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night
 
A slight chance of showers and thunderstorms before 9pm. Partly cloudy. Low around 60, with temperatures rising to around 62 overnight. South southwest wind 2 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
Wednesday
 
A chance of showers and thunderstorms between noon and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. North northeast wind 1 to 7 mph. Chance of precipitation is 40%.
Wednesday Night
 
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 60. South southwest wind 2 to 7 mph. Chance of precipitation is 50%.
Thursday
 
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Friday
 
Sunny, with a high near 95.
Friday Night
 
Partly cloudy, with a low around 63.
Saturday
 
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 95.
Saturday Night
 
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62.
Sunday
 
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 91.
Sunday Night
 
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 61.
Monday
 
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89.

 

Forecast from NOAA-NWS for Thornton, CO.