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Denver ties record high temperature for December 21

December 21, 2025 Thornton Weather

Record High Temperature

Another mild day, another record warm temperature.

As measured at Denver International Airport, the Mile High City saw a high temperature today of 67 degrees. This ties the previous record high for December 19 last set in 1933.

Here in Thornton, we managed to stay cooler with a high of 63.7 degrees for the day.

record heatRecord Temperatureweather record

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Weather, natural disasters & climate news and information.

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  • Mild temperatures on Monday, some breezy winds
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