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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

coldcoolwarmhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow75%75%53%53%clearovercastprecipitation: 1.9 inprecipitation: 1.9 in0.3 in0.3 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.0tourism score: 7.00.40.4
Commerce City weather by month. Click on each chart for more information.

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

Average High and Low Temperature in Commerce CityhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 3045°FDec 3045°FJul 1089°FJul 1089°F21°F21°F62°F62°FJun 780°FJun 780°FSep 1480°FSep 1480°FMar 154°FMar 154°F54°F54°F53°F53°F30°F30°F29°F29°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingfreezingvery coldvery coldcoldcoldcoolcomfortablewarmhotcomfortablefreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Kırıkkale, Turkey (6,349 miles away) is the far-away foreign place with temperatures most similar to Commerce City (view comparison).

Compare Commerce City to another city:

Clouds

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

Cloud Cover Categories in Commerce CityclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 1375%Sep 1375%Mar 1553%Mar 1553%Jun 364%Jun 364%Nov 264%Nov 264%NowNowclearmostly clearpartly cloudyovercastmostly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

Daily Chance of Precipitation in Commerce CitysnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 2231%Jul 2231%Dec 196%Dec 196%Feb 168%Feb 168%Apr 118%Apr 118%Sep 418%Sep 418%NowNowrainsnowmixed
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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 average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

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

Average Liquid-Equivalent Monthly Snowfall in Commerce CitysnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inDec 160.2 inDec 160.2 inJul 200.0 inJul 200.0 inMar 190.2 inMar 190.2 inJan 230.2 inJan 230.2 inOct 140.1 inOct 140.1 in
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

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

Hours of Daylight and Twilight in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 0 minJun 2015 hr, 0 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 21 minDec 219 hr, 21 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

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

Sunrise & Sunset with Twilight and Daylight Saving Time in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 135:30 AMJun 135:30 AM8:32 PMJun 278:32 PMJun 27Dec 74:34 PMDec 74:34 PM7:34 AMNov 67:34 AMNov 6Mar 14DSTMar 14DSTDSTNov 7DSTNov 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2021. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Moon

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 time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

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

Humidity Comfort Levels in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 220%Feb 220%Jul 270%Jul 270%NowNowdrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

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

Average Wind Speed in Commerce CitywindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJan 179.6 mphJan 179.6 mphAug 196.9 mphAug 196.9 mphNov 198.2 mphNov 198.2 mphApr 308.2 mphApr 308.2 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Commerce City is from the west throughout the year.

Wind Direction in Commerce City

Wind Direction in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

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

Tourism Score in Commerce Citybest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.07.00.40.47.07.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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

Beach/Pool Score in Commerce Citybest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.15.10.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

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

Time Spent in Various Temperature Bands and the Growing Season in Commerce Citygrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2650%Apr 2650%Oct 1350%Oct 1350%May 1590%May 1590%Sep 2390%Sep 2390%Apr 410%Apr 410%Nov 310%Nov 310%0%Jan 280%Jan 28Jul 21100%Jul 21100%NowNowfreezingvery coldcoldcoolcomfortablewarmhotfrigid
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

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

Growing Degree Days in Commerce CityJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°FMar 1888°FMar 1888°FJun 16900°FJun 16900°FJul 251,800°FJul 251,800°FDec 313,393°FDec 313,393°FNowNow
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

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

Average Daily Incident Shortwave Solar Energy in Commerce CitybrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 217.9 kWhJun 217.9 kWhDec 212.4 kWhDec 212.4 kWhMay 96.8 kWhMay 96.8 kWhAug 46.8 kWhAug 46.8 kWhNov 33.5 kWhNov 33.5 kWhFeb 103.5 kWhFeb 103.5 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

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%).

Data Sources

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).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.