Longmont, Colorado Weather:
Wednesday, September 9, 2026
Stormy Weather
Day 82°
Night 54°
Precipitation 79 %
Wind 4 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (September 9, 2025)
Cloudy Night

Day

86°

Night

54°

Wind

6 mph

Precipitation

40 %