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Thornton, Colorado Weather:
Monday, August 18, 2025
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 88°
Night 54°

Weather Forecast History

Last Year's Weather on This Day (August 18, 2024)

Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.

Day

93°

Night

66°

Wind

8 mph

UV Index

8

Precipitation

41