Climate and Average Weather Year Round in Commerce City Colorado, United States
In Commerce City, the summers are hot and mostly clear and the winters are very cold, dry, and partly cloudy. Over the course of the year, the temperature typically varies from 21°F to 89°F and is rarely below 5°F or above 97°F.
Based on the tourism score, the best time of year to visit Commerce City for warm-weather activities is from mid June to early September.
Climate in Commerce City
Average Temperature in Commerce City
The hot season lasts for 3.2 months, from June 7 to September 14, with an average daily high temperature above 80°F. The hottest day of the year is July 10, with an average high of 89°F and low of 62°F.
The cold season lasts for 3.5 months, from November 19 to March 1, with an average daily high temperature below 54°F. The coldest day of the year is December 30, with an average low of 21°F and high of 45°F.
Average High and Low Temperature in Commerce City
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in Commerce City
In Commerce City, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Commerce City begins around June 3 and lasts for 5.0 months, ending around November 2. On September 13, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 75% of the time, and overcast or mostly cloudy 25% of the time.
The cloudier part of the year begins around November 2 and lasts for 7.0 months, ending around June 3. On March 15, the cloudiest day of the year, the sky is overcast or mostly cloudy 47% of the time, and clear, mostly clear, or partly cloudy 53% of the time.
Cloud Cover Categories in Commerce City
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Commerce City varies throughout the year.
The wetter season lasts 5.1 months, from April 1 to September 4, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 31% on July 22.
The drier season lasts 6.9 months, from September 4 to April 1. The smallest chance of a wet day is 6% on December 19.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Commerce City changes throughout the year.
Rain alone is the most common for 9.2 months, from February 16 to November 24. The highest chance of a day with rain alone is 31% on July 22.
Snow alone is the most common for 2.8 months, from November 24 to February 16. The highest chance of a day with snow alone is 4% on January 6.
Daily Chance of Precipitation in Commerce City
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Commerce City experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.8 months, from March 6 to November 1, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 15, with an average total accumulation of 1.9 inches.
The rainless period of the year lasts for 4.2 months, from November 1 to March 6. The least rain falls around December 29, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall in Commerce City
The sliding 31-day liquid-equivalent quantity of snowfall in Commerce City does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall in Commerce City
The length of the day in Commerce City varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 21 minutes of daylight; the longest day is June 20, with 15 hours, 0 minutes of daylight.
Hours of Daylight and Twilight in Commerce City
The earliest sunrise is at 5:30 AM on June 13, and the latest sunrise is 2 hours, 4 minutes later at 7:34 AM on November 6. The earliest sunset is at 4:34 PM on December 7, and the latest sunset is 3 hours, 57 minutes later at 8:32 PM on June 27.
Daylight saving time (DST) is observed in Commerce City during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time in Commerce City
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases in Commerce City
The perceived humidity level in Commerce City, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.
Humidity Comfort Levels in Commerce City
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Commerce City experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 5.3 months, from November 19 to April 30, with average wind speeds of more than 8.2 miles per hour. The windiest day of the year is January 17, with an average hourly wind speed of 9.6 miles per hour.
The calmer time of year lasts for 6.7 months, from April 30 to November 19. The calmest day of the year is August 19, with an average hourly wind speed of 6.9 miles per hour.
Average Wind Speed in Commerce City
The predominant average hourly wind direction in Commerce City is from the west throughout the year.
Wind Direction in Commerce City
Best Time of Year to Visit
To characterize how pleasant the weather is in Commerce City throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Commerce City for general outdoor tourist activities is from mid June to early September, with a peak score in the first week of July.
Tourism Score in Commerce City
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Commerce City for hot-weather activities is from late June to mid August, with a peak score in the second week of July.
Beach/Pool Score in Commerce City
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Commerce City typically lasts for 5.6 months (170 days), from around April 26 to around October 13, rarely starting before April 4 or after May 15, and rarely ending before September 23 or after November 3.
Time Spent in Various Temperature Bands and the Growing Season in Commerce City
Based on growing degree days alone, the first spring blooms in Commerce City should appear around March 18, only rarely appearing before February 28 or after April 7.
Growing Degree Days in Commerce City
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 2.9 months, from May 9 to August 4, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is June 21, with an average of 7.9 kWh.
The darker period of the year lasts for 3.2 months, from November 3 to February 10, with an average daily incident shortwave energy per square meter below 3.5 kWh. The darkest day of the year is December 21, with an average of 2.4 kWh.
Average Daily Incident Shortwave Solar Energy in Commerce City
For the purposes of this report, the geographical coordinates of Commerce City are 39.808 deg latitude, -104.934 deg longitude, and 5,161 ft elevation.
The topography within 2 miles of Commerce City contains only modest variations in elevation, with a maximum elevation change of 167 feet and an average elevation above sea level of 5,161 feet. Within 10 miles contains only modest variations in elevation (653 feet). Within 50 miles contains significant variations in elevation (9,797 feet).
The area within 2 miles of Commerce City is covered by shrubs (84%) and artificial surfaces (16%), within 10 miles by artificial surfaces (45%) and shrubs (43%), and within 50 miles by grassland (34%) and trees (25%).
This report illustrates the typical weather in Commerce City, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Commerce City.
For each station, the records are corrected for the elevation difference between that station and Commerce City according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Commerce City is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Commerce City and a given station.
The stations contributing to this reconstruction are: Denver / Stapleton International, Co. (KDNR, 79%, 9 kilometers, southeast) and Rocky Mountain Metropolitan Airport (KBJC, 21%, 19 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .