Denver, CO is currently on track to have its coldest year in more than 20-years. The average temperature for the year so far is 49.6ºF as of December 16, which if that remains will be the coldest year since 1997.
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The typical annual average temperature in Denver is 50.9º, so a warm week or 2 before the end of the year might bump up this year’s average, but that’s not looking likely.
February, March, May, June, October, and November all finished with below-average monthly temperature readings in Denver, including particularly cold months compared to average in March, May, and October.
Statewide, the average temperature was 46.8 degrees (through November), 0.5 degrees above the long-term (1901-2000) average. However, it’s still cold enough that 2019 will likely finish as Colorado’s coldest statewide year since 2008.