Boulder, Colorado Weather:
Tuesday, September 8, 2026
Sunny with a Chance of Thunderstorms
Day 82°
Night 57°
Precipitation 61 %
Wind 2 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 8, 2025)
Cloudy Night

Day

88°

Night

61°

Wind

6 mph

Precipitation

49 %