September 2013 Weather History at Chicago O'Hare International Airport Illinois, United States

This report shows the past weather for Chicago O'Hare International Airport, providing a weather history for September 2013. It features all historical weather data series we have available, including the Chicago O'Hare International Airport temperature history for September 2013. You can drill down from year to month and even day level reports by clicking on the graphs.

Chicago O'Hare International Airport Temperature History September 2013

Temperature history in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303030°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FAugOct
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 September 2013 at Chicago O'Hare International Airport

Hourly Temperature in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOctcoldcoolhotwarmcomfortable
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 September 2013 at Chicago O'Hare International Airport

Cloud Cover in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
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 September 2013 at Chicago O'Hare International Airport

Daily Precipitation in September 2013 at Chicago O'Hare International Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inAugOct
The daily measured quantity of liquid or liquid-equivalent precipitation.

Observed Weather in September 2013 at Chicago O'Hare International Airport

Observed Weather in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
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, Sep 1 Thunderstorm, Thunderstorm with Light Rain, Mist0.14 inTS, -TSRA, BR
Sat, Sep 7 Light Rain0.01 in-RA
Wed, Sep 11 Light Rain0.00 in-RA
Thu, Sep 12 Light Rain0.00 in-RA
Sun, Sep 15 Heavy Rain, Rain, Light Rain, Mist0.65 in+RA, RA, -RA, BR
Wed, Sep 18 Thunderstorm, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Mist0.55 inTS, +TSRA, -TSRA, TSRA, -RA, BR
Thu, Sep 19 Thunderstorm, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Haze, Fog, Mist0.83 inTS, +TSRA, -TSRA, TSRA, -RA, HZ, FG, BR
Fri, Sep 20 Light Rain0.01 in-RA
Thu, Sep 26 MistBR
Sat, Sep 28 Light Rain, Mist0.04 in-RA, BR
Sun, Sep 29 Heavy Rain, Rain, Light Rain, Mist0.34 in+RA, RA, -RA, BR

Hours of Daylight and Twilight in September 2013 at Chicago O'Hare International 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 September 2013 at Chicago O'Hare International Airport

Sunrise & Sunset with Twilight in September 2013 at Chicago O'Hare International Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct6:17 AM6:17 AMSep 17:24 PMSep 17:24 PM6:47 AM6:47 AMSep 306:34 PMSep 306:34 PM6:27 AM6:27 AMSep 117:07 PMSep 117:07 PM6:38 AM6:38 AMSep 216:50 PMSep 216:50 PM
The solar day over the course of September 2013. 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 September 2013 at Chicago O'Hare International Airport

Solar Elevation and Azimuth in September 2013 at Chicago O'Hare International AirportSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020303040405000101020203030404050
northeastsouthwest
Solar elevation and azimuth over the course of September 2013. 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 September 2013 at Chicago O'Hare International Airport

Moon Rise, Set & Phases in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctSep 56:37 AMSep 56:37 AMSep 196:13 AMSep 196:13 AMOct 47:35 PMOct 47:35 PM6:33 AM6:33 AM7:08 PM7:08 PM6:17 PM6:17 PM6:47 AM6:47 AM6:26 AM6:26 AM6:09 PM6:09 PM
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.
Sep 2013IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
14%2:36 AMENE5:04 PMWNW-9:52 AMS250,687 mi
2
8%3:33 AMENE5:38 PMWNW-10:38 AMS249,325 mi
3
3%4:32 AMENE6:09 PMWNW-11:23 AMS247,521 mi
4
1%5:32 AME6:39 PMW-12:07 PMS245,429 mi
5
0%6:33 AME7:08 PMW-12:52 PMS243,194 mi
6
2%7:36 AME7:38 PMW-1:38 PMS240,935 mi
7
6%8:39 AME8:09 PMW-2:25 PMS238,740 mi
8
12%9:45 AMESE8:44 PMWSW-3:15 PMS236,661 mi
9
20%10:50 AMESE9:22 PMWSW-4:07 PMS234,726 mi
10
30%11:56 AMESE10:06 PMWSW-5:01 PMS232,952 mi
11
42%1:00 PMESE10:57 PMWSW-5:59 PMS231,366 mi
12
50%2:01 PMESE11:54 PMWSW-6:58 PMS230,017 mi
13
65%2:56 PMESE--7:57 PMS228,989 mi
14
76%-12:58 AMWSW3:46 PMESE8:56 PMS228,390 mi
15
86%-2:06 AMWSW4:29 PMESE9:53 PMS228,342 mi
16
93%-3:17 AMWSW5:08 PMESE10:47 PMS228,947 mi
17
98%-4:28 AMW5:44 PME11:40 PMS230,260 mi
18
99%-5:38 AMW6:17 PME--
19
100%-6:47 AMW6:49 PME12:30 AMS232,261 mi
20
99%-7:55 AMW7:22 PMENE1:20 AMS234,850 mi
21
96%-9:01 AMWNW7:56 PMENE2:09 AMS237,849 mi
22
91%-10:04 AMWNW8:33 PMENE2:58 AMS241,023 mi
23
84%-11:04 AMWNW9:13 PMENE3:47 AMS244,114 mi
24
75%-12:01 PMWNW9:56 PMENE4:35 AMS246,870 mi
25
66%-12:53 PMWNW10:43 PMENE5:24 AMS249,070 mi
26
50%-1:40 PMWNW11:33 PMENE6:12 AMS250,547 mi
27
47%-2:23 PMWNW-6:59 AMS251,198 mi
28
37%12:27 AMENE3:01 PMWNW-7:46 AMS250,989 mi
29
28%1:22 AMENE3:36 PMWNW-8:31 AMS249,960 mi
30
20%2:20 AMENE4:08 PMWNW-9:16 AMS248,216 mi

Humidity Comfort Levels in September 2013 at Chicago O'Hare International Airport

Humidity Comfort Levels in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
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 September 2013 at Chicago O'Hare International Airport

Wind Speed in September 2013 at Chicago O'Hare International Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphAugOct
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in September 2013 at Chicago O'Hare International Airport

Hourly Wind Speed in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
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 2013 at Chicago O'Hare International Airport

Hourly Wind Direction in 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in September 2013 at Chicago O'Hare International Airport

Atmospheric Pressure in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.6 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 inHg30.4 inHg30.4 inHgAugOct
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 September 2013 at Chicago O'Hare International Airport Fall 2013

Number of Reports by Day in September 2013 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030002020404060608080100100AugOct
regularspecialcorrection
The number of reports per day.

Reports by Hour in September 2013 at Chicago O'Hare International Airport Fall 2013

Reports by Hour in September 2013 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
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 Chicago O'Hare International Airport in September 2013.

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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