Denver, Colorado – Summer returns in full force Sunday as Denver climbs back into the 90s, with storms threatening by late afternoon.
According to the National Weather Service in Boulder, Sunday, July 13 will bring mostly sunny skies early, followed by scattered thunderstorms after 3 p.m. Highs are expected to reach 93°F, with light east winds shifting south by evening. Showers could impact travel along I-25 and local streets from Boulder to Aurora during late-day outdoor events.
Though Sunday’s storms may be isolated, Monday carries a stronger thunderstorm chance — especially during the afternoon commute. Temperatures will peak at 95°F before showers return. Residents should stay alert for lightning, brief downpours, and gusty winds both days.
By Tuesday, rain chances continue into the night, and a gradual cool-down arrives. Daytime highs will fall to the upper 80s by Wednesday, with daily storms expected through at least Thursday, July 17. Evening lows will hover in the low 60s, offering some overnight relief.
Air quality remains a concern as the Ozone Action Day Alert continues for the Front Range through 4 p.m. Saturday. Sensitive groups — including children and those with asthma — should limit outdoor exertion and avoid driving gas-powered vehicles during peak afternoon hours.
Looking ahead, the pattern stays unsettled with summer storms and heat trading dominance. Sunday brings the start of a hot, stormy stretch, and more updates are likely as conditions evolve.
