Summer 2021 Weather History at Denver International Airport Colorado, United States

This report shows the past weather for Denver International Airport, providing a weather history for the summer of 2021. It features all historical weather data series we have available, including the Denver International Airport temperature history for the summer of 2021. You can drill down from year to month and even day level reports by clicking on the graphs.

Denver International Airport Temperature History in the Summer of 2021

Temperature history in the Summer of 2021 at Denver International AirportJunJulAug30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°FSpringFall
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in the Summer of 2021 at Denver International Airport

Hourly Temperature in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFallhotcoolcold
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 hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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© Esri, et al.

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Cloud Cover in the Summer of 2021 at Denver International Airport

Cloud Cover in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Daily Precipitation in the Summer of 2021 at Denver International Airport

Daily Precipitation in the Summer of 2021 at Denver International AirportJunJulAug0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inSpringFall
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in the Summer of 2021 at Denver International Airport

Snow Depth in the Summer of 2021 at Denver International AirportJunJulAug0.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 inSpringFall
The daily measured snow depth, where available.

Observed Weather in the Summer of 2021 at Denver International Airport

Observed Weather in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Sun, Jun 6 Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain0.00 inVCTS, -TSRA, -RA
Mon, Jun 7 Thunderstorm in the Vicinity, Tornado or WaterspoutVCTS, +FC
Wed, Jun 9 MistBR
Sun, Jun 13 Thunderstorm, Thunderstorm in the VicinityTS, VCTS
Sat, Jun 19 Thunderstorm, Light Rain0.00 inTS, -RA
Sun, Jun 20 Light Rain0.01 in-RA
Mon, Jun 21 Light Rain, Mist0.04 in-RA, BR
Tue, Jun 22 Haze0.00 inHZ
Thu, Jun 24 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Rain, Light Rain0.30 inTS, VCTS, TSRA, -RA
Fri, Jun 25 Thunderstorm, Thunderstorm in the Vicinity, Rain, Light Rain, Mist0.08 inTS, VCTS, RA, -RA, BR
Sat, Jun 26 Thunderstorm, Thunderstorm with Light Rain, Light Rain0.20 inTS, -TSRA, -RA
Sun, Jun 27 Thunderstorm in the Vicinity, Rain, Light Rain0.12 inVCTS, RA, -RA
Mon, Jun 28 Thunderstorm with Light Rain, Light Rain0.09 in-TSRA, -RA
Wed, Jun 30 Light Rain0.00 in-RA
Thu, Jul 1 Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain0.07 inVCTS, -TSRA, -RA
Fri, Jul 2 Thunderstorm, Thunderstorm in the Vicinity, Light Rain, Mist0.00 inTS, VCTS, -RA, BR
Sat, Jul 3 Thunderstorm, Thunderstorm in the Vicinity, Light Rain0.00 inTS, VCTS, -RA
Sun, Jul 4 Thunderstorm in the Vicinity, HazeVCTS, HZ
Mon, Jul 5 Thunderstorm in the Vicinity, Light Rain0.00 inVCTS, -RA
Thu, Jul 8 Thunderstorm in the Vicinity, Light Rain0.00 inVCTS, -RA
Sat, Jul 10 HazeHZ
Sat, Jul 17 Thunderstorm in the Vicinity, Heavy Rain, Light Rain0.14 inVCTS, +RA, -RA
Thu, Jul 22 Thunderstorm, Thunderstorm in the Vicinity, Light Rain0.02 inTS, VCTS, -RA
Fri, Jul 23 Light Rain0.00 in-RA
Sat, Jul 24 HazeHZ
Fri, Jul 30 Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain0.02 inVCTS, -TSRA, -RA
Sat, Jul 31 Rain, Light Rain, Haze, Mist0.09 inRA, -RA, HZ, BR
Sun, Aug 1 Haze, MistHZ, BR
Mon, Aug 2 HazeHZ
Wed, Aug 4 Haze0.00 inHZ
Thu, Aug 5 HazeHZ
Fri, Aug 6 Thunderstorm, Thunderstorm in the Vicinity, Light Rain0.00 inTS, VCTS, -RA
Sat, Aug 7 SmokeFU
Sun, Aug 8 SmokeFU
Mon, Aug 9 Smoke0.00 inFU
Tue, Aug 10 Haze, SmokeHZ, FU
Sat, Aug 14 Thunderstorm0.02 inTS
Tue, Aug 17 Light Rain0.00 in-RA
Thu, Aug 19 Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain0.18 inVCTS, -TSRA, -RA
Fri, Aug 20 Thunderstorm in the Vicinity, Light Rain, Mist0.00 inVCTS, -RA, BR
Sat, Aug 21 Light Rain0.01 in-RA
Wed, Aug 25 Light Rain, Haze0.06 in-RA, HZ
Thu, Aug 26 Light Rain, Fog, Mist0.00 in-RA, FG, BR
Fri, Aug 27 Thunderstorm in the VicinityVCTS
Tue, Aug 31 HazeHZ

Hours of Daylight and Twilight in the Summer of 2021 at Denver International Airport

Hours of Daylight and Twilight in the Summer of 2021 at Denver International AirportJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallJun 2015 hr, 0 minJun 2015 hr, 0 minnightnightdaydayAug 3113 hr, 5 minAug 3113 hr, 5 min
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.

Sunrise & Sunset with Twilight in the Summer of 2021 at Denver International Airport

Sunrise & Sunset with Twilight in the Summer of 2021 at Denver International AirportJunJulAug2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFall5:29 AM5:29 AMJun 148:28 PMJun 148:28 PM6:26 AM6:26 AMAug 317:31 PMAug 317:31 PM
The solar day over the course of the Summer of 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.

Moon Rise, Set & Phases in the Summer of 2021 at Denver International Airport

Moon Rise, Set & Phases in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallMay 111:01 PMMay 111:01 PMMay 265:15 AMMay 265:15 AMJun 104:53 AMJun 104:53 AMJun 2412:40 PMJun 2412:40 PMJul 97:17 PMJul 97:17 PMJul 238:38 PMJul 238:38 PMAug 87:51 AMAug 87:51 AMAug 226:03 AMAug 226:03 AMSep 66:52 PMSep 66:52 PMSep 205:55 PMSep 205:55 PM5:52 AM5:52 AM8:11 PM8:11 PM7:39 PM7:39 PM5:43 AM5:43 AM9:01 PM9:01 PM7:46 PM7:46 PM5:10 AM5:10 AM5:01 AM5:01 AM8:41 PM8:41 PM8:35 PM8:35 PM6:10 AM6:10 AM8:40 PM8:40 PM7:51 PM7:51 PM6:12 AM6:12 AM5:52 AM5:52 AM7:41 PM7:41 PM7:17 PM7:17 PM7:16 AM7:16 AM
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 Comfort Levels in the Summer of 2021 at Denver International Airport

Humidity Comfort Levels in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in the Summer of 2021 at Denver International Airport

Wind Speed in the Summer of 2021 at Denver International AirportJunJulAug0 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mphSpringFall
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Summer of 2021 at Denver International Airport

Hourly Wind Speed in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2021 at Denver International Airport

Hourly Wind Direction in 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in the Summer of 2021 at Denver International Airport

Atmospheric Pressure in the Summer of 2021 at Denver International AirportJunJulAug29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHg30.6 inHg30.6 inHgSpringFall
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

Number of Reports by Day in the Summer of 2021 at Denver International Airport 2021

Number of Reports by Day in the Summer of 2021 at Denver International AirportJunJulAug005050100100SpringFall
regularspecialcorrection
The number of reports per day.

Reports by Hour in the Summer of 2021 at Denver International Airport 2021

Reports by Hour in the Summer of 2021 at Denver International AirportJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
regularspecialcorrection
Indication of what types of reports were recorded during each hour.

This report graphically illustrates the historical weather reports recorded by the weather station at Denver International Airport in the summer of 2021.

METAR Reports

Airport weather stations throughout the world routinely issue METAR weather reports . Such reports are used by pilots, air traffic controllers, meteorologists, climatologists, and other researchers. They are published via radio transmission and on the internet. We have been collecting and archiving published METAR reports since 2011, and have found third-party sources for archived reports from years prior to that.

ISD Reports

The Integrated Surface Database (ISD), maintained and published by NOAA's National Center for Environmental Information , consists of hourly and synoptic weather reports from a variety of sources. We use ISD data to complement and backfill for our METAR archive.

Other Data

The sources for the averages shown in the daily temperature chart are discussed in greater detail on this station's Averages Report.

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.

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.