Boulder, Colorado Weather:
Monday, September 28, 2026
Cloudy Weather
Day 77°
Night 50°
Precipitation 49 %
Wind 1 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (September 28, 2025)
Rainy Night

Day

77°

Night

55°

Wind

6 mph

Precipitation

55 %