Weather
Denver Weather Tuesday: Cold Front Brings First Taste of Fall
Scattered showers and storms remain possible through Wednesday across the Front Range and mountains.
By Elliot Vaughn · 2026-09-14T03:12:39.330Z
Denver, CO – A sharp temperature swing is coming to Colorado's Front Range this week, with Denver area temperatures potentially reaching the low 90s Monday before a cold front delivers a much cooler first taste of fall Tuesday.
According to the National Weather Service Denver/Boulder, temperatures will run above average Monday before the cold front moves through early Tuesday morning. Isolated to scattered showers and thunderstorms will also be possible each day through Wednesday.
Across Denver, the urban corridor and nearby plains, Monday highs are forecast between 88 and 91 degrees, with a 30% chance of precipitation. Overnight lows are expected to range from 51 to 57 degrees.
Tuesday will feel dramatically different. Highs across the urban corridor and plains are forecast to reach only 68 to 74 degrees, potentially making some locations around 20 degrees cooler than Monday. The chance for showers is 30%, with lows between 55 and 60 degrees.
Temperatures rebound Wednesday, when highs are expected to reach 77 to 86 degrees. The Weather Service shows a 50% chance of showers or thunderstorms.
Colorado's mountains will remain considerably cooler. Monday highs are forecast from 62 to 70 degrees with a 50% storm chance. Tuesday highs drop to 50 to 62 degrees, with another 50% chance of precipitation. Wednesday highs are forecast between 57 and 64 degrees, again accompanied by a 50% storm chance.
Drivers and anyone with outdoor plans should monitor forecasts, particularly where thunderstorms develop. Temperatures are expected to climb back above average Wednesday following Tuesday's brief falllike cooldown.