Boulder, Colorado Weather:
Monday, August 31, 2026
Cloudy Weather
Day 79°
Night 59°
Precipitation 55 %
Wind 7 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (August 31, 2025)
Cloudy Night

Day

81°

Night

54°

Wind

5 mph

Precipitation

2 %