Denver Is About to Hit 91°F — But a Surprise Cold Drop Is Coming Right After

Temperatures are surging to near-record highs across the Front Range this week, bringing dangerous afternoon storms. Here’s the exact day everything changes.

Travel Alert: Drivers on Interstate 25 and mountain routes should expect rapidly changing conditions during afternoon storm development Wednesday through Saturday.

Denver and the broader Front Range are in for a scorching stretch to close out the week — but forecasters say the heat won’t last long. A powerful cold air system is tracking toward Colorado and could slash temperatures by as much as 30 degrees in a single day.

Wednesday marks the peak of the heat, with the National Weather Service projecting highs near 91°F across the Denver metro. Clear skies in the morning will give way to isolated showers and thunderstorms by the mid-afternoon, particularly after 3 p.m. Gusty winds and brief, heavy downpours could accompany the strongest cells — though widespread severe weather is not currently anticipated.

Thursday stays warm at 87°F with another round of afternoon storm chances possible. The slight risk of showers carries into Friday and Saturday as well, though both days will trend mostly sunny with highs in the mid-80s.

“The pattern shift arrives Sunday — and by Monday, Denver could wake up 30 degrees colder than it was just days before.”

Sunday marks the beginning of the transition. Highs will retreat to around 82°F as clouds thicken and storm chances increase once again. But the real story is Monday: cooler air surges into the region, dropping highs to near 61°F — a dramatic 30-degree swing from Wednesday’s peak — with widespread showers and thunderstorms expected throughout the day.

Residents planning outdoor events, travel on mountain passes, or extended time outdoors this week are urged to monitor afternoon weather conditions closely, as storms can develop rapidly in Colorado’s Front Range environment.