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Thornton, Colorado Weather:
Sunday, December 21, 2025
Cloudy Weather
Day 61°
Night 43°
Precipitation 4 %
Wind 4 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (December 21, 2024)
Sunny Weather

Day

64°

Night

37°

Wind

6 mph

UV Index

2

Precipitation

0 %