Denver Sees Unprecedented March Heat Wave

City expected to hit 90 degrees, shattering long-standing records

Mar. 23, 2026 at 4:35pm

Denver is experiencing a historic heat wave, with temperatures expected to reach 90 degrees this week - over a month earlier than the city has ever recorded a 90-degree day. The city has already broken several long-standing heat records this month, and the National Weather Service warns the extreme warmth is not done yet.

Why it matters

This unprecedented early-season heat wave in Denver is a concerning sign of the impacts of climate change, with the city experiencing temperatures more typical of the height of summer in the middle of spring. The extreme heat could have significant effects on the local environment, agriculture, and public health.

The details

Last week, Denver broke a 119-year-old heat record when temperatures climbed past 80 degrees. The heat is expected to continue, with Monday forecast to reach 73 degrees, just shy of a 2017 record. Tuesday could climb to 83, likely eclipsing a March 24 record set in 1896. And on Wednesday, the temperature is predicted to soar to 90 degrees, which would smash both the March 25 record of 75 degrees set last year and Denver's overall March heat record, which has already fallen twice this month.

  • Last week, Denver broke a 119-year-old heat record.
  • Monday is forecast to reach 73 degrees, just shy of a 2017 record.
  • Tuesday could climb to 83, likely eclipsing a March 24 record set in 1896.
  • Wednesday's predicted 90-degree temperature would smash both the March 25 record of 75 degrees set last year and Denver's overall March heat record, which has already fallen twice this month.
  • The earliest 90-degree reading previously recorded in Denver was April 30, 1992.

The players

National Weather Service

The federal agency that monitors and forecasts weather conditions across the United States.

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What’s next

Meteorologists will continue to monitor the situation and provide updates on the duration and potential impacts of the heat wave.

The takeaway

This extreme early-season heat wave in Denver is a stark reminder of the effects of climate change, with the city experiencing summerlike temperatures in the middle of spring. The situation underscores the need for proactive measures to address the growing threat of global warming and its consequences for local communities.