Longmont, Colorado Weather:
Sunday, September 13, 2026
Cloudy Weather
Day 86°
Night 54°
Precipitation 20 %
Wind 4 mph
UV Index (0 - 11+) 6
Weather Forecast History
Last Year's Weather on This Day (September 13, 2025)
Rainy Weather

Day

75°

Night

55°

Wind

6 mph

Precipitation

90 %