Climate ▸Forecast ▸December ▸January ▸
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

Thornton (CO) Temperatures: Monthly Averages and Year-Round Insights

On this page, we’ll explore Thornton’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.

Monthly Temperature Averages

The climate in Thornton is dynamic, ranging widely from chilly in winter to very warm in summer. Average maximum daytime temperatures reach a very warm 32°C in July. In December, the coolest month of the year, temperatures drop to a cold 7°C. At night, expect even cooler temperatures, with lows averaging around -8°C.

The chart below illustrates the average maximum day and minimum night temperatures in Thornton by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM. During this time the sun's heating effect is the strongest.

The chart below shows the average temperature throughout the year:

July, the city’s warmest month, also receives about 51 mm of rainfall spread over roughly 11 days. For more information, please visit our Thornton Precipitation page.

Annual Temperatures in the United States of America Compared

The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.

Annual
Map not visible? Whoops sorry! Please refresh the page.
Legend very warm warm pleasant moderate cold very cold
Very warm means maximum temperatures above 30°C. Warm: 22°C to 30°C. Pleasant: 18°C to 22°C Moderate: 12°C to 18°C. Cold: 2°C to 12°C. Very cold: lower than 2°C

Thornton Temperatures Compared World Wide

Thornton’s average annual maximum temperature is 19°C. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, has an average annual temperature of 20°C, known for its sunny summers and comfortable winters.

In contrast, in Reykjavík, Iceland, the average annual temperature is significantly lower at 9°C, with mild summers and cold winters.

Meanwhile, New York City, USA, experiences a more pronounced seasonal variation with an average annual temperature of 17°C.

In Brisbane, Australia, the average annual temperature is 26°C, making it warmer than Sydney.

How are these Temperatures Measured?

Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.

This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.

Temperatures in the Mountains

Although not all regions have mountains, elevated areas exhibit distinct temperature variations.

  • Sun Exposure: Sunlit slopes tend to be warmer, while shaded areas remain cooler.
  • Altitude Effects: Temperatures drop by approximately 6°C for every 1,000 meters of elevation, creating distinct microclimates.

For more detailed information about Thornton’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Thornton climate page.


Current temperature in Thornton (CO)

Sun   Dec 22
14°C | 6°C
N 5 m/s
partly cloudy and no rain

partly cloudy and no rain

Mon   Dec 23
13°C | 4°C
N 4 m/s
broken clouds and no rain

broken clouds and no rain

Tue   Dec 24
13°C | 1°C
NE 4 m/s
partly cloudy and no rain

partly cloudy and no rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Thornton.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

)