ClimateAverages

Thornton Weather in January

JanFebMarAprMayJunJulAugSepOctNovDec
January daytime high
6.2°C
January overnight low
-9.0°C
January average
-1.4°C

In January, Thornton typically sees daytime highs of 6.2°C and overnight lows around -9.0°C. Compared to the annual average high of 18.6°C, January runs -12.4°C.

vs. annual avg high
-12.4°C
Rank among 12 months
#12 warmest
Hottest year overall
1933

Where January ranks in Thornton

Jan6°FebMarAprMayJunJulAugSepOctNovDec

FAQ

What is the average temperature in Thornton in January?

January in Thornton averages a daytime high of 6.2°C and an overnight low of -9.0°C.

Is January warm or cold in Thornton?

January runs -12.4°C compared to Thornton's annual average high of 18.6°C, ranking #12 of 12 months by warmth.

What should I pack for Thornton in January?

Plan for daytime highs near 6.2°C and cooler evenings around -9.0°C.

Other months for Thornton

FebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

January in nearby cities

DenverColorado SpringsAuroraFort CollinsLakewoodArvadaWestminsterCentennialPuebloBoulderGreeleyHighlands Ranch