Cool, Wet Pattern Ushers in Storm Chances and Flash Flood Risk for Denver

Denver woke Monday under overcast skies and a noticeable cooldown, setting the stage for an active weather day across the Front Range.

At 8:02 AM MDT, Denver International Airport (station KDEN) reported a temperature of 60.1°F under low ceilings (500 ft overcast), with light north-northwest winds at 6.9 mph and no precipitation observed. Air quality remained healthy, with ground-level ozone in the “Good” category (AQI 34) and particulate matter (PM2.5) at “Moderate” levels (AQI 55); sensitive individuals were advised to limit prolonged outdoor exertion.

A First Alert Weather Day was declared as an unsettled pattern brings daily storm chances into midweek. The National Weather Service has issued a Flood Watch from noon through this evening along the I-25 corridor and adjacent foothills, where slow-moving thunderstorms could unleash localized downpours of 1-2 inches in under an hour-particularly hazardous over recent burn scars.

Forecast models converge on scattered showers and thunderstorms developing by early afternoon. Skies will remain mostly cloudy, with high temperatures struggling to reach the low 70s. Rain chances hover around 50 percent through Wednesday before tapering later in the week. Lightning, gusty winds up to 45 mph, and penny-sized hail cannot be ruled out in stronger cells.

Tonight, clouds will thin briefly, dropping lows into the upper 50s. Tuesday’s pattern repeats, with additional afternoon storms and continued flood risk where soil remains saturated. By Thursday and Friday, moisture levels slowly decrease, but daily storm development will persist-keeping temperatures below seasonal norms through at least Friday.

Residents are urged to monitor local forecasts, avoid low-lying and burn-scarred areas during heavy rain, and prepare for rapidly changing conditions throughout the day.