Denver weather: Afternoon thunderstorms, possible hail through Memorial Day

Thunderstorms forming in Colorado’s mountains will roll down into Front Range cities and across Interstate 25 Friday afternoon and evening, bringing rain, lightning, wind and possible large hail, according to the National Weather Service.

A pattern of afternoon storms, potentially severe, will persist through the weekend and Memorial Day, weather service forecasters said.

Sunny blue skies and warm weather is expected in the mornings.

The high temperature in metro Denver Friday will be 78 degrees, forecasters said. On Saturday, the high temperature is forecast at 81 degrees, decreasing to a high of 79 degrees Sunday, then increasing to 81 degrees on Monday. Night low temperatures are expected to stay above 50 degrees.

Starting around 1 p.m. Friday, scattered thunderstorms likely will spread eastward — passing over the I-25 corridor and the high plains — with wind gusts at speeds up to 22 miles per hour. Forecasters said lightning strikes could be frequent. The weather service estimated the likelihood of precipitation at 60% Friday, decreasing to 30% on Saturday and Sunday.

There’s a limited risk of flash flooding in the mountain canyons and foothills northwest of Denver where fires in 2020 reduced vegetation, meteorologists said.

In southeastern Colorado, strong and potentially severe storms are expected Friday afternoon and evening. Where rain is heavy, forecasters said, flash flooding is possible.

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