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Thornton, Colorado Weather:
Sunday, January 18, 2026
Cloudy Weather
Day 54°
Night 27°
Precipitation 10 %
Wind 8 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (January 18, 2025)
Snowy Weather

Day

14°

Night

-6°

Wind

8 mph

UV Index

1

Precipitation

86 %