October 2018 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 October 2018. It features all historical weather data series we have available, including the Chicago O'Hare International Airport temperature history for October 2018. 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 October 2018

Temperature history in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313120°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°FSepNov
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 October 2018 at Chicago O'Hare International Airport

Hourly Temperature in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNovvery coldcoldcool
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 October 2018 at Chicago O'Hare International Airport

Cloud Cover in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
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 October 2018 at Chicago O'Hare International Airport

Daily Precipitation in October 2018 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inSepNov
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in October 2018 at Chicago O'Hare International Airport

Snow Depth in October 2018 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 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 inSepNov
The daily measured snow depth, where available.

Observed Weather in October 2018 at Chicago O'Hare International Airport

Observed Weather in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
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
Mon, Oct 1 Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Mist1.37 inVCTS, +TSRA, -TSRA, TSRA, -RA, BR
Tue, Oct 2 Heavy Rain, Rain, Light Rain, Mist0.21 in+RA, RA, -RA, BR
Thu, Oct 4 Rain, Light Rain0.04 inRA, -RA
Fri, Oct 5 Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Heavy Rain, Rain, Light Rain, Light Drizzle, Mist1.22 inVCTS, +TSRA, -TSRA, +RA, RA, -RA, -DZ, BR
Sat, Oct 6 Thunderstorm in the Vicinity, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Heavy Rain, Light Rain, Mist0.14 inVCTS, +TSRA, -TSRA, +RA, -RA, BR
Sun, Oct 7 Thunderstorm in the Vicinity, Rain, Light Rain, Light Drizzle, Mist0.51 inVCTS, RA, -RA, -DZ, BR
Mon, Oct 8 Rain, Light Rain, Mist0.16 inRA, -RA, BR
Wed, Oct 10 Rain, Light Rain, Mist0.35 inRA, -RA, BR
Sat, Oct 13 MistBR
Sun, Oct 14 Light Rain, Mist0.07 in-RA, BR
Mon, Oct 15 Light Rain, Mist0.10 in-RA, BR
Fri, Oct 19 Light Rain, Light Drizzle, Mist0.03 in-RA, -DZ, BR
Sat, Oct 20 Light Snow0.00 in-SN
Sat, Oct 27 Light Rain0.00 in-RA
Sun, Oct 28 Light Rain, Mist0.12 in-RA, BR
Tue, Oct 30 Thunderstorm in the Vicinity, Thunderstorm with Light Rain, Heavy Rain, Light Rain, Mist0.16 inVCTS, -TSRA, +RA, -RA, BR
Wed, Oct 31 Light Rain, Mist0.31 in-RA, BR

Hours of Daylight and Twilight in October 2018 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 and Daylight Saving Time in October 2018 at Chicago O'Hare International Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNov6:48 AM6:48 AMOct 16:33 PMOct 16:33 PM7:23 AM7:23 AMOct 315:46 PMOct 315:46 PM6:59 AM6:59 AMOct 116:16 PMOct 116:16 PM7:11 AM7:11 AMOct 216:00 PMOct 216:00 PM
The solar day over the course of October 2018. 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 October 2018 at Chicago O'Hare International Airport

Solar Elevation and Azimuth in October 2018 at Chicago O'Hare International AirportOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNov010102020304000102020303040
northeastsouthwest
Solar elevation and azimuth over the course of October 2018. 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 October 2018 at Chicago O'Hare International Airport

Moon Rise, Set & Phases in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 249:53 PMSep 249:53 PMOct 810:48 PMOct 810:48 PMOct 2411:46 AMOct 2411:46 AMNov 710:03 AMNov 710:03 AM6:58 PM6:58 PM7:01 AM7:01 AM6:06 AM6:06 AM6:34 PM6:34 PM5:55 PM5:55 PM6:56 AM6:56 AM6:14 AM6:14 AM5:07 PM5:07 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.
Oct 2018IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
61%-1:30 PMWNW11:13 PMENE5:54 AMS232,498 mi
2
50%-2:30 PMWNW-6:51 AMS230,774 mi
3
37%12:12 AMENE3:24 PMWNW-7:49 AMS229,310 mi
4
26%1:18 AMENE4:11 PMWNW-8:47 AMS228,236 mi
5
16%2:29 AMENE4:52 PMWNW-9:44 AMS227,701 mi
6
8%3:41 AMENE5:29 PMWNW-10:38 AMS227,842 mi
7
3%4:54 AME6:03 PMW-11:31 AMS228,751 mi
8
0%6:06 AME6:34 PMW-12:22 PMS230,444 mi
9
0%7:16 AME7:05 PMW-1:12 PMS232,845 mi
10
3%8:25 AMESE7:37 PMWSW-2:02 PMS235,788 mi
11
8%9:32 AMESE8:11 PMWSW-2:52 PMS239,039 mi
12
15%10:36 AMESE8:48 PMWSW-3:42 PMS242,324 mi
13
24%11:37 AMESE9:28 PMWSW-4:33 PMS245,371 mi
14
33%12:34 PMESE10:13 PMWSW-5:24 PMS247,936 mi
15
43%1:26 PMESE11:02 PMWSW-6:14 PMS249,827 mi
16
50%2:12 PMESE11:54 PMWSW-7:03 PMS250,918 mi
17
62%2:53 PMESE--7:51 PMS251,155 mi
18
71%-12:50 AMWSW3:29 PMESE8:38 PMS250,559 mi
19
80%-1:47 AMWSW4:01 PMESE9:23 PMS249,215 mi
20
87%-2:46 AMWSW4:31 PMESE10:08 PMS247,265 mi
21
93%-3:47 AMW4:59 PME10:53 PMS244,889 mi
22
98%-4:48 AMW5:27 PME11:37 PMS242,290 mi
23
99%-5:51 AMW5:55 PME--
24
100%-6:56 AMW6:25 PMENE12:23 AMS239,669 mi
25
100%-8:02 AMWNW6:57 PMENE1:11 AMS237,207 mi
26
97%-9:10 AMWNW7:34 PMENE2:01 AMS235,042 mi
27
92%-10:18 AMWNW8:17 PMENE2:53 AMS233,259 mi
28
85%-11:24 AMWNW9:08 PMENE3:49 AMS231,891 mi
29
75%-12:26 PMWNW10:05 PMENE4:46 AMS230,924 mi
30
64%-1:22 PMWNW11:09 PMENE5:45 AMS230,324 mi
31
50%-2:11 PMWNW-6:42 AMS230,056 mi

Humidity Comfort Levels in October 2018 at Chicago O'Hare International Airport

Humidity Comfort Levels in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
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 October 2018 at Chicago O'Hare International Airport

Wind Speed in October 2018 at Chicago O'Hare International Airport1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mphSepNov
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in October 2018 at Chicago O'Hare International Airport

Hourly Wind Speed in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
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 2018 at Chicago O'Hare International Airport

Hourly Wind Direction in 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in October 2018 at Chicago O'Hare International Airport

Atmospheric Pressure in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.4 inHg29.4 inHg29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHg30.6 inHg30.6 inHgSepNov
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 October 2018 at Chicago O'Hare International Airport Fall 2018

Number of Reports by Day in October 2018 at Chicago O'Hare International Airport181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131002020404060608080100100SepNov
regularspecialcorrection
The number of reports per day.

Reports by Hour in October 2018 at Chicago O'Hare International Airport Fall 2018

Reports by Hour in October 2018 at Chicago O'Hare International Airport18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSepNov
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 October 2018.

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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