Denver

Mile High Meltdown: Denver Set To Roast Near 100 Before Monsoon Storms Return

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Published on July 19, 2026
Mile High Meltdown: Denver Set To Roast Near 100 Before Monsoon Storms ReturnSource: Jeffrey Beall, CC BY-SA 2.0, via Wikimedia Commons

Denver woke up Sunday, July 19, to mostly clear skies and a cool start, with KBJC reporting about 68°F around 5:15 a.m. MDT. That relief will not last long. Heat is expected to spike later today, with highs near 98°F on Sunday and near 100°F on Monday, and a Heat Advisory now covers the Denver metro and nearby plains through Monday night.

Heat Advisory And Guidance

The National Weather Service has issued a Heat Advisory from 10 a.m. Sunday, July 19, through 9 p.m. Monday, July 20, for the Denver metro and I‑25 corridor, warning of highs mainly in the upper 90s to low 100s. Overnight lows are expected to linger in the upper 60s, offering limited relief. The advisory urges people to "drink plenty of fluids, stay in an air‑conditioned room, stay out of the sun, and check up on relatives and neighbors," according to the National Weather Service.

Today Through Midweek

Mostly sunny conditions are on tap today with light northwest winds and only a stray chance of rain across the plains. The heat will peak mid‑afternoon, with hourly forecasts showing temperatures climbing into the mid‑to‑upper 90s between about 2 and 5 p.m. MDT. Monday stays hot with another push toward 100°F, before monsoonal moisture moves in Tuesday into Wednesday, boosting the odds of slow‑moving storms capable of locally heavy rain.

Safety And Outdoor Plans

If you have to be outside, shift strenuous work to early morning or evening, drink water often, and watch for heat‑exhaustion symptoms in people and pets. Employers and outdoor crews should build in frequent rest breaks in shaded or air‑conditioned areas. Heat stroke is an emergency; call 911 if someone is overcome by heat.

Local Resources And Cooling Options

The city will open recreation centers and many public libraries as daytime cooling options during advisory hours; check local listings for hours and locations. See Denver7 for a running list of cooling centers and addresses.

Hoodline published an earlier heads‑up on this heat pattern, and this update tightens the timing and adds the official Heat Advisory mentioned in that heat wave heads‑up. Keep an eye on local forecasts and the National Weather Service for any changes to heat or storm timing.

Quick tips: avoid leaving pets in cars, plan outdoor activity for before 9 a.m. or after 7 p.m. when possible, and check on neighbors without air conditioning. Updates will follow if the advisory changes or if storms develop midweek.

Denver-Weather & Environment