Denver rolled into Monday, July 13, under clear blue skies and a comfortable start around 70°F at local observation sites. That calm, however, is not going to last. Forecasters expect temperatures to rocket toward 100°F this afternoon, and a Heat Advisory is posted for much of the metro area from 10 AM to 9 PM MDT. With low humidity and strong sun, anyone working or exercising outside faces a higher risk of heat illness.
Heat Advisory Through Monday Evening
The National Weather Service office in Denver/Boulder has a Heat Advisory in effect from 10 AM to 9 PM MDT Monday, July 13, for Denver and nearby I‑25 communities. Forecasters are calling for highs in the upper 90s to around 100°F and warn that the heat “may cause heat illnesses,” according to NWS Denver/Boulder. The advisory urges people to drink plenty of fluids, stay in air‑conditioned spaces when possible, and check on relatives and neighbors who may be more vulnerable. Outdoor work crews are advised to build in extra breaks and shade, and employers are urged to follow heat‑safety guidance that calls for frequent rest periods in shaded or cooled areas.
Afternoon Heat And Gusty Winds
Temperatures are expected to surge into the mid‑90s by late morning, then peak near 99 to 100°F between about 2 and 5 PM on Monday, July 13. Readings will only fall back to the upper 60s overnight, offering limited relief.
Winds will turn south to southeast through the day, generally in the 2 to 12 mph range, with gusts up to about 20 to 26 mph at times. Localized stronger gusts are possible tonight into Tuesday. Slightly cooler but still hot conditions are on tap for Tuesday and Wednesday, with highs in the upper 90s to mid‑90s. Only isolated storm chances are expected later in the week.
Where To Cool Off
For those who need a break from the heat, Denver typically opens recreation centers and public library branches as daytime cooling sites when a heat advisory is in effect. The city’s shelter and extreme‑heat guidance lists locations and resources for people without air conditioning. For the latest information on available sites and services, check the City of Denver Find Shelter page.
If you or a neighbor shows signs of heat exhaustion, such as dizziness, nausea, or heavy sweating, move to a cooler place and call emergency services if symptoms worsen.
Week Ahead
The hot pattern is expected to hang on through the rest of the week, with highs in the mid to upper 90s into the weekend. Only a slight chance of afternoon storms is expected over the high country. The combination of prolonged heat and dry conditions is adding to fire‑weather concerns in the foothills, so officials urge people to avoid open flames and follow local fire‑danger notices if heading into the mountains.
Bottom Line
On Monday, July 13, limit strenuous outdoor activity between late morning and early evening, drink plenty of water, and use air‑conditioned public spaces if you do not have cooling at home. Keep an eye on local media and the National Weather Service for any updates through the afternoon.
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