July 2020 Weather History at Ronald Reagan Washington National Airport Virginia, United States

This report shows the past weather for Ronald Reagan Washington National Airport, providing a weather history for July 2020. It features all historical weather data series we have available, including the Ronald Reagan Washington National Airport temperature history for July 2020. You can drill down from year to month and even day level reports by clicking on the graphs.

Ronald Reagan Washington National Airport Temperature History July 2020

Temperature history in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313160°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FJunAug
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 July 2020 at Ronald Reagan Washington National Airport

Hourly Temperature in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAugwarmhotsweltering
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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Cloud Cover in July 2020 at Ronald Reagan Washington National Airport

Cloud Cover in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
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 July 2020 at Ronald Reagan Washington National Airport

Daily Precipitation in July 2020 at Ronald Reagan Washington National Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in1 in1 in2 in2 in3 in3 in4 in4 inJunAug
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in July 2020 at Ronald Reagan Washington National Airport

Observed Weather in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
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
Wed, Jul 1 Light Rain0.12 in-RA
Sat, Jul 4 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Haze0.00 inTS, VCTS, -TSRA, HZ
Sun, Jul 5 Thunderstorm, Light Rain, Haze, Mist0.00 inTS, -RA, HZ, BR
Mon, Jul 6 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Light Rain0.14 inTS, VCTS, +TSRA, -TSRA, -RA
Tue, Jul 7 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Mist2.33 inTS, VCTS, +TSRA, -TSRA, BR
Sun, Jul 12 Light Rain0.01 in-RA
Mon, Jul 13 Heavy Rain, Rain, Light Rain0.14 in+RA, RA, -RA
Mon, Jul 20 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain0.07 inTS, VCTS, -TSRA, -RA
Tue, Jul 21 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Mist0.52 inTS, VCTS, +TSRA, -TSRA, TSRA, -RA, BR
Wed, Jul 22 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Haze, Mist0.56 inTS, VCTS, +TSRA, -TSRA, TSRA, -RA, HZ, BR
Thu, Jul 23 Thunderstorm, Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Light Rain, Mist1.89 inTS, VCTS, -TSRA, -RA, BR
Fri, Jul 24 Thunderstorm in the Vicinity, Heavy Rain, Light Rain, Mist0.43 inVCTS, +RA, -RA, BR
Tue, Jul 28 Light Rain0.00 in-RA
Thu, Jul 30 Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Rain, Light Rain, Mist0.12 inVCTS, +TSRA, -TSRA, RA, -RA, BR
Fri, Jul 31 Rain, Light Rain, Mist0.10 inRA, -RA, BR

Hours of Daylight and Twilight in July 2020 at Ronald Reagan Washington National Airport

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 July 2020 at Ronald Reagan Washington National Airport

Sunrise & Sunset with Twilight in July 2020 at Ronald Reagan Washington National Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031312 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAug5:46 AM5:46 AMJul 18:37 PMJul 18:37 PM6:08 AM6:08 AMJul 318:19 PMJul 318:19 PM5:52 AM5:52 AMJul 118:34 PMJul 118:34 PM6:00 AM6:00 AMJul 218:28 PMJul 218:28 PM
The solar day over the course of July 2020. 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.

Solar Elevation and Azimuth in July 2020 at Ronald Reagan Washington National Airport

Solar Elevation and Azimuth in July 2020 at Ronald Reagan Washington National AirportJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJunAug0010102020303040405050606070700010102020303040405050606070
northeastsouthwest
Solar elevation and azimuth over the course of July 2020. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in July 2020 at Ronald Reagan Washington National Airport

Moon Rise, Set & Phases in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJunAugJul 512:45 AMJul 512:45 AMJul 201:33 PMJul 201:33 PMAug 311:59 AMAug 311:59 AM8:27 PM8:27 PM6:01 AM6:01 AM5:36 AM5:36 AM8:51 PM8:51 PM8:01 PM8:01 PM5:52 AM5:52 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.
Jul 2020IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
88%-2:52 AMWSW5:06 PMESE10:18 PMS230,173 mi
2
95%-3:30 AMWSW6:17 PMESE11:15 PMS231,446 mi
3
97%-4:14 AMWSW7:25 PMESE--
4
99%-5:04 AMWSW8:27 PMESE12:15 AMS233,288 mi
5
100%-6:01 AMWSW9:21 PMESE1:14 AMS235,639 mi
6
99%-7:03 AMWSW10:07 PMESE2:12 AMS238,368 mi
7
95%-8:06 AMWSW10:46 PMESE3:07 AMS241,285 mi
8
89%-9:09 AMWSW11:18 PMESE3:57 AMS244,164 mi
9
82%-10:10 AMWSW11:47 PMESE4:44 AMS246,777 mi
10
74%-11:10 AMW-5:27 AMS248,913 mi
11
65%12:12 AME12:08 PMW-6:09 AMS250,397 mi
12
50%12:37 AME1:05 PMW-6:49 AMS251,107 mi
13
45%1:01 AME2:02 PMW-7:30 AMS250,980 mi
14
36%1:26 AMENE3:00 PMWNW-8:11 AMS250,020 mi
15
27%1:54 AMENE4:00 PMWNW-8:54 AMS248,296 mi
16
18%2:25 AMENE5:01 PMWNW-9:40 AMS245,942 mi
17
11%3:02 AMENE6:03 PMWNW-10:30 AMS243,144 mi
18
5%3:45 AMENE7:03 PMWNW-11:23 AMS240,128 mi
19
1%4:37 AMENE8:00 PMWNW-12:18 PMS237,137 mi
20
0%5:36 AMENE8:51 PMWNW-1:15 PMS234,407 mi
21
1%6:42 AMENE9:35 PMWNW-2:12 PMS232,132 mi
22
5%7:52 AMENE10:14 PMWNW-3:07 PMS230,438 mi
23
12%9:04 AMENE10:49 PMWNW-3:59 PMS229,373 mi
24
21%10:15 AME11:20 PMW-4:50 PMS228,916 mi
25
32%11:25 AME11:50 PMW-5:40 PMS228,997 mi
26
43%12:36 PME--6:29 PMS229,527 mi
27
50%-12:21 AMW1:46 PMESE7:20 PMS230,421 mi
28
67%-12:53 AMWSW2:56 PMESE8:13 PMS231,616 mi
29
77%-1:29 AMWSW4:06 PMESE9:08 PMS233,075 mi
30
86%-2:10 AMWSW5:14 PMESE10:05 PMS234,783 mi
31
93%-2:57 AMWSW6:17 PMESE11:04 PMS236,728 mi

Humidity Comfort Levels in July 2020 at Ronald Reagan Washington National Airport

Humidity Comfort Levels in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
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 July 2020 at Ronald Reagan Washington National Airport

Wind Speed in July 2020 at Ronald Reagan Washington National Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mph70 mph70 mphJunAug
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in July 2020 at Ronald Reagan Washington National Airport

Hourly Wind Speed in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
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 2020 at Ronald Reagan Washington National Airport

Hourly Wind Direction in 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in July 2020 at Ronald Reagan Washington National Airport

Atmospheric Pressure in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.6 inHg29.6 inHg29.7 inHg29.7 inHg29.8 inHg29.8 inHg29.9 inHg29.9 inHg30.0 inHg30.0 inHg30.1 inHg30.1 inHg30.2 inHg30.2 inHg30.3 inHg30.3 inHgJunAug
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 July 2020 at Ronald Reagan Washington National Airport Summer 2020

Number of Reports by Day in July 2020 at Ronald Reagan Washington National Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131005050100100JunAug
regularspecialcorrection
The number of reports per day.

Reports by Hour in July 2020 at Ronald Reagan Washington National Airport Summer 2020

Reports by Hour in July 2020 at Ronald Reagan Washington National Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMJunAug
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 Ronald Reagan Washington National Airport in July 2020.

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 © OpenStreetMap contributors.

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