Boulder, Colorado Weather:
Wednesday, September 30, 2026
Stormy Weather
Day 72°
Night 52°
Precipitation 68 %
Wind 4 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (September 30, 2025)
Cloudy Night

Day

77°

Night

54°

Wind

7 mph

Precipitation

49 %