Longmont, Colorado Weather:
Thursday, September 3, 2026
Cloudy Weather
Day 90°
Night 61°
Precipitation 16 %
Wind 2 mph
UV Index (0 - 11+) 7
Weather Forecast History
Last Year's Weather on This Day (September 3, 2025)
Night

Day

88°

Night

54°

Wind

6 mph

Precipitation

0 %