57°F

Thornton, Colorado, USA

Updated: 24-Sep-2026 6:05am

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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: Thu, 24-Sep-2026 12:46am MDT

Thornton

	Thursday Chance Rain Showers	Friday Patchy Fog then Chance Showers And T-Storms	Saturday Sunny	Sunday Mostly Sunny	Monday Partly Sunny then Chance Showers And T-Storms	Tuesday Rain Showers	Wednesday Slight Chance Rain Showers
	Hi 72 °F	Hi 77 °F	Hi 84 °F	Hi 85 °F	Hi 79 °F	Hi 64 °F	Hi 71 °F

Overnight Chance Rain Showers	Thursday Night Chance Showers And T-Storms	Friday Night Chance Showers And T-Storms then Partly Cloudy	Saturday Night Mostly Clear	Sunday Night Partly Cloudy	Monday Night Showers And T-Storms	Tuesday Night Chance Rain Showers
Lo 59 °F	Lo 55 °F	Lo 54 °F	Lo 55 °F	Lo 58 °F	Lo 53 °F	Lo 47 °F

Overnight	A chance of rain showers. Cloudy, with a low around 59. South southwest wind around 3 mph. Chance of precipitation is 30%.
Thursday	A chance of rain showers before 3pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 72. North northwest wind 3 to 8 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
Thursday Night	A chance of showers and thunderstorms before midnight, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 55. North northeast wind 1 to 7 mph. Chance of precipitation is 40%.
Friday	Patchy fog before 10am, then a chance of rain showers between noon and 3pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 77. East southeast wind 1 to 6 mph. Chance of precipitation is 40%.
Friday Night	A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54. South southwest wind 5 to 8 mph. Chance of precipitation is 30%.
Saturday	Sunny, with a high near 84.
Saturday Night	Mostly clear, with a low around 55.
Sunday	Mostly sunny, with a high near 85.
Sunday Night	Partly cloudy, with a low around 58.
Monday	A chance of showers and thunderstorms after noon. Partly sunny, with a high near 79.
Monday Night	Showers and thunderstorms. Mostly cloudy, with a low around 53.
Tuesday	Rain showers before noon, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 64.
Tuesday Night	A chance of rain showers. Partly cloudy, with a low around 47.
Wednesday	A slight chance of rain showers. Mostly sunny, with a high near 71.

Forecast from NOAA-NWS for Thornton, CO.