Denver, Colo. – A stretch of September heat will peak Wednesday across Colorado, with highs near 90°F before late-week storms move in. Drivers, especially along I-25 and I-70, should prepare for changing conditions by Friday as showers and thunderstorms return.
According to the National Weather Service in Boulder, Wednesday will stay sunny with highs in the upper 80s. Winds may gust to 21 mph during the afternoon. Conditions will remain dry and warm until Thursday night, when clouds begin to build ahead of a stormier pattern.
Friday afternoon marks the biggest shift. Thunderstorms are expected to develop along the Front Range, bringing a chance of heavy downpours and lightning that could slow traffic on I-25 through Denver, Aurora, and Lakewood. Football fans heading to Friday night games should allow extra time for delays and watch for slick roads.
By Saturday and Sunday, scattered showers and thunderstorms will remain a risk each afternoon. While temperatures cool slightly into the 80s, storm chances increase across north-central Colorado. Outdoor plans, including early September festivals, could face interruptions. Residents are urged to monitor updates and avoid flooded intersections.
The warm, dry air earlier in the week also raises elevated fire concerns, particularly in the foothills and eastern plains. Residents should limit outdoor burning and secure equipment that could spark fires until moisture arrives Friday.
More updates are expected as storm chances increase into the weekend.
Five Day Forecast for Denver, Colorado
- Wednesday: Sunny, high 85°F, breezy with gusts to 21 mph.
- Thursday: Sunny, high 90°F. Clouds increase by night.
- Friday: Thunderstorms after noon. High near 80°F.
- Saturday: Chance of storms. High 84°F.
- Sunday: Partly sunny with showers. High near 85°F.
