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Boulder Weather in September
United States · early fall in Northern Hemisphere
Boulder at 5,430 feet is renowned for its outdoor culture and weather that supports year-round recreation. The Flatirons rock formations immediately west channel dramatic Chinook winds — Boulder frequently experiences the most intense downslope wind events along the Front Range. The university town has 300 days of sunshine and low humidity.
Excellent shoulder season — warm with fewer tourists in many destinations.
Current Weather in Boulder Right Now
45°F
Clear Sky
Feels like 39°F · H 48°F / L 41°F