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Thornton, Colorado Weather:
Active Weather Warnings
Friday, February 27, 2026
Sunny Weather
Day 70°
Night 41°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (February 27, 2025)
Sunny Weather

Day

61°

Night

34°

Wind

6 mph

UV Index

4

Precipitation

0 %

Weather Alerts and Warnings for

Severe Future Possible

Fire Weather Watch

Fire Weather Watch issued February 26 at 3:16AM MST until February 27 at 6:00PM MST by NWS Denver CO
Feb 27, 8:00 AM → Feb 27, 6:00 PM
The National Weather Service in Denver has issued a Fire Weather
Watch for wind and low relative humidity, which is in effect from
Friday morning through Friday afternoon. The Fire Weather Watch
has been cancelled.

* AFFECTED AREA...Fire Weather Zones 238, 239, 240, 242, 243,
244, 245, 248, 249, 250 and 251.

* TIMING...From Friday morning through Friday afternoon.

* WINDS...West 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 11 percent.

IMPACTS: Conditions will be favorable for rapid fire spread.
Avoid outdoor burning and any activity that may produce a
spark and start a wildfire.
+ Read More
A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Updated: Feb 26, 9:54 AM Source: NWS Alert
Severe Expected Likely

Red Flag Warning

Red Flag Warning issued February 26 at 11:04AM MST until February 27 at 6:00PM MST by NWS Denver CO
Feb 27, 8:00 AM → Feb 27, 6:00 PM
The National Weather Service in Denver has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 8 AM to 6 PM MST Friday. The Fire Weather Watch is no longer
in effect.

* AFFECTED AREA...Fire Weather Zones 238, 239, 240, 242, 243,
244, 245, 248 and 249.

* TIMING...From 8 AM to 6 PM MST Friday.

* WINDS...West 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 8 percent.

IMPACTS: Conditions will be favorable for rapid fire spread.
Avoid outdoor burning and any activity that may produce a
spark and start a wildfire.
+ Read More
A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Updated: Feb 26, 1:02 PM Source: NWS Alert