A warm weekend could possibly bring more showers and thunderstorms to the Denver area.

Friday, Saturday and Sunday all have high temperatures in the low 80s, and each day has at least a 20% chance of showers and isolated thunderstorms.

Denver has a 40% chance for storms on Friday, and those storms are expected to begin in the mountains in the afternoon before moving into the Denver area in the evening. The storms could produce wind gusts of up to 35 mph and brief heavy rainfall.

The high temperature Friday is 84 degrees, and the Colorado Department of Public Health and Environment extended the Ozone Action Day Alert for a third day in a row.

Ozone concentrations primarily in the Denver metro are expected to reach moderate to unhealthy levels for sensitive groups

In these locations, active children and adults, and people with lung disease such as asthma, should reduce prolonged or heavy outdoor exertion from noon until 8 pm, the National Weather Service advises.

Saturday will be partly sunny and the coolest day of the weekend with a high of 80 degrees and a 30% chance for rain showers and isolated thunderstorms in the afternoon.

The rain chances continue through Sunday with a 30% chance after noon. The day will be mostly sunny otherwise, and wind gusts could reach 17 mph.