Denver Weather: Final heat wave of summer abruptly ends Wednesday

The transition between summer and fall is coming up this week and summer will go out with a surge of heat. On the Jetstream map we have a building ridge of hot high pressure backing into the front range of the Rockies. This will lift high temperatures over the state especially over the eastern half of Colorado.

Temperatures over most of Colorado will be at least 10 degrees above normal including in the Denver metro area where at least 90 degrees is expected in most neighborhoods Monday afternoon.

Tuesday will be almost as warm in most places and with some occasionally gusty wind, the fire danger will be elevated in many areas especially across the Eastern Plains.

Tuesday night a cold front will swing thru the state with much cooler temperatures and a good chance of showers and thunderstorms moving in.

High temperatures will be dropping below normal by mid week with more than a third of the state feeling the chill of fall on Wednesday.

The Autumnal Equinox or First Day of Astronomical Fall is on Thursday at 7:03 pm.