Thornton, CO Weather

Live radar, hourly and 7-day forecast, and National Weather Service alerts for Thornton, Adams County, Colorado.

Updated Jul 29, 2026, 3:05 PM local time · Radar refreshes every 5 minutes

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Thornton

Overcast

87°F

Feels like 86°F

Wind 16 mph

Humidity 39%

Cloud cover 100%

UV index 8

Alerts 3

Active alerts (3)

Special Weather StatementModerate

North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

Until Jul 29, 2026, 9:15 PM

Full details

At 248 PM MDT, Doppler radar was tracking a strong thunderstorm 5
miles southwest of Denver International Airport, or 12 miles
northeast of Denver, moving east at 10 mph.

HAZARD...Wind gusts up to 50 mph and half inch size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.

Locations impacted include...
Northern Aurora, northeastern Commerce City, Brighton, Denver
International Airport, D.I.A Terminal and Concourses, Barr Lake and
Watkins.

Monitor the weather situation closely and be alert for threatening
weather conditions.

Heavy rain is occurring with this storm and may lead to flooding. Do
not drive your vehicle through flooded roadways.

Special Weather StatementModerate

North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Elbert/Central and East Douglas Counties Above 6000 Feet

Until Jul 29, 2026, 9:15 PM

Full details

At 238 PM MDT, Doppler radar was tracking a strong thunderstorm near
Castle Pines, or 18 miles south of Denver, moving northeast at 10
mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.

Locations impacted include...
Southern Aurora, eastern Centennial, eastern Highlands Ranch,
Castle Rock, Parker, Lone Tree, The Pinery, Castle Pines, Franktown
and Foxfield.

Monitor the weather situation closely and be alert for threatening
weather conditions.

Heavy rain is occurring with this storm and may lead to flooding. Do
not drive your vehicle through flooded roadways.

Flood AdvisoryMinor

Adams, CO; Denver, CO

Until Jul 30, 2026, 12:00 AM

Full details

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Southwestern Adams County in northeastern Colorado...
Central Denver County in northeastern Colorado...

* WHEN...Until 600 PM MDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.

* ADDITIONAL DETAILS...

- At 301 PM MDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Up to 1 inch of rain has fallen.

- This includes the following streams and drainages...
Sand Creek, Coal Creek, Toll Gate Creek, Third Creek, First Creek
and Second Creek. Additional rainfall amounts of 0.5 to 1 inch
are expected over the area. This additional rain will result in
minor flooding.

- Some locations that will experience flooding include...
Southwestern Denver International Airport.

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

Thornton weather radar

Light Heavy

Next 24 hours

Now

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87°F

29%

4 PM

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75°F

41%

5 PM

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87°F

56%

6 PM

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76°F

41%

7 PM

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76°F

20%

8 PM

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75°F

16%

9 PM

🌦️

72°F

10 PM

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71°F

11 PM

🌤️

69°F

12 AM

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68°F

1 AM

🌤️

67°F

2 AM

🌤️

66°F

3 AM

⛅

65°F

4 AM

☀️

64°F

5 AM

☁️

65°F

6 AM

🌦️

65°F

7 AM

☁️

66°F

8 AM

🌤️

68°F

9 AM

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72°F

10 AM

☀️

77°F

11 AM

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83°F

12 PM

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88°F

1 PM

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92°F

2 PM

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94°F

7-day forecast

Today

Jul 29

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94°F

66°F

56%

Thu

Jul 30

🌦️

94°F

64°F

18%

Fri

Jul 31

🌧️

93°F

66°F

46%

Sat

Aug 1

⛅

92°F

69°F

46%

Sun

Aug 2

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99°F

74°F

Mon

Aug 3

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105°F

78°F

22%

Tue

Aug 4

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88°F

72°F

22%

Weather near Thornton

1 mi Northglenn, CO 3 mi Sherrelwood, CO 4 mi Westminster, CO 5 mi Commerce City, CO 7 mi Broomfield, CO 8 mi Arvada, CO 9 mi Denver, CO 9 mi Wheat Ridge, CO

Alerts are relayed from the National Weather Service and may lag the official source. In a life-threatening situation always follow weather.gov and local emergency broadcasts.

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