December 2021 Weather History in Crystal Lake Illinois, United States

The data for this report comes from the Chicago O'Hare International Airport. See all nearby weather stations

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

Crystal Lake Temperature History December 2021

Temperature history in December 2021 in Crystal Lake1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°FNovJan
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 December 2021 in Crystal Lake

Hourly Temperature in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJanfrigidfreezingvery coldcold
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 December 2021 in Crystal Lake

Cloud Cover in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 December 2021 in Crystal Lake

Daily Precipitation in December 2021 in Crystal Lake1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inNovJan
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in December 2021 in Crystal Lake

Snow Depth in December 2021 in Crystal Lake1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 inNovJan
The daily measured snow depth, where available.

Observed Weather in December 2021 in Crystal Lake

Observed Weather in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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, Dec 1 Light Rain0.00 in-RA
Fri, Dec 3 Light Rain0.00 in-RA
Sat, Dec 4 Fog, MistFG, BR
Sun, Dec 5 Light Ice Pellets and Rain, Heavy Rain, Rain, Light Rain, Mist0.26 in-PLRA, +RA, RA, -RA, BR
Mon, Dec 6 Light Snow0.00 in-SN
Tue, Dec 7 Light Snow0.00 in-SN
Fri, Dec 10 Heavy Rain, Rain, Light Rain, Light Drizzle, Mist0.84 in+RA, RA, -RA, -DZ, BR
Sat, Dec 11 Light Snow, Light Rain and Snow, Light Rain0.00 in-SN, -RASN, -RA
Tue, Dec 14 Light Rain, Light Drizzle, Mist0.03 in-RA, -DZ, BR
Thu, Dec 16 Light Rain, Haze0.00 in-RA, HZ
Fri, Dec 17 Light Rain0.00 in-RA
Sat, Dec 18 Light Rain and Snow, Light Rain, Light Drizzle, Mist0.06 in-RASN, -RA, -DZ, BR
Thu, Dec 23 MistBR
Fri, Dec 24 Fog, MistFG, BR
Sat, Dec 25 Light Rain, Mist0.03 in-RA, BR
Sun, Dec 26 Thunderstorm with Heavy Rain, Thunderstorm with Rain, Light Rain, Mist0.26 in+TSRA, TSRA, -RA, BR
Mon, Dec 27 Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Light Drizzle, Fog, Mist0.43 in+TSRA, -TSRA, TSRA, -RA, -DZ, FG, BR
Tue, Dec 28 Heavy Snow, Snow, Light Snow, Light Drizzle and Snow, Light Snow and Drizzle, Light Drizzle, Fog, Mist0.38 in+SN, SN, -SN, -DZSN, -SNDZ, -DZ, FG, BR
Wed, Dec 29 Light Snow, Light Drizzle, Haze, Mist0.01 in-SN, -DZ, HZ, BR
Thu, Dec 30 Light Snow, Light Drizzle, Haze, Mist0.00 in-SN, -DZ, HZ, BR
Fri, Dec 31 Light Drizzle, Haze, Mist0.00 in-DZ, HZ, BR

Hours of Daylight and Twilight in December 2021 in Crystal Lake

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 December 2021 in Crystal Lake

The solar day over the course of December 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.

Solar Elevation and Azimuth in December 2021 in Crystal Lake

Solar Elevation and Azimuth in December 2021 in Crystal LakeDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan00101020200010102020
northeastsouthwest
Solar elevation and azimuth over the course of December 2021. 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 December 2021 in Crystal Lake

Moon Rise, Set & Phases in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanDec 41:44 AMDec 41:44 AMDec 1810:36 PMDec 1810:36 PMJan 212:34 PMJan 212:34 PM7:33 AM7:33 AM4:41 PM4:41 PM3:54 PM3:54 PM7:54 AM7:54 AM7:32 AM7:32 AM4:22 PM4:22 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.
Dec 2021IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
11%3:31 AME2:44 PMWSW-9:08 AMS226,256 mi
2
4%4:50 AMESE3:15 PMWSW-10:03 AMS223,582 mi
3
1%6:11 AMESE3:53 PMWSW-11:02 AMS222,019 mi
4
0%7:33 AMESE4:41 PMSW-12:07 PMS221,771 mi
5
3%8:49 AMSE5:40 PMSW-1:15 PMS222,876 mi
6
9%9:55 AMSE6:50 PMSW-2:22 PMS225,188 mi
7
18%10:47 AMESE8:04 PMWSW-3:26 PMS228,414 mi
8
28%11:28 AMESE9:19 PMWSW-4:23 PMS232,182 mi
9
38%12:00 PMESE10:31 PMWSW-5:15 PMS236,130 mi
10
50%12:27 PMESE11:39 PMW-6:02 PMS239,946 mi
11
60%12:50 PME--6:46 PMS243,400 mi
12
70%-12:44 AMW1:11 PME7:27 PMS246,344 mi
13
78%-1:48 AMW1:32 PME8:08 PMS248,704 mi
14
86%-2:50 AMWNW1:53 PMENE8:49 PMS250,463 mi
15
92%-3:52 AMWNW2:17 PMENE9:32 PMS251,645 mi
16
96%-4:54 AMWNW2:44 PMENE10:17 PMS252,296 mi
17
99%-5:56 AMWNW3:16 PMENE11:04 PMS252,470 mi
18
100%-6:57 AMNW3:54 PMNE11:53 PMS252,211 mi
19
100%-7:54 AMNW4:40 PMNE--
20
99%-8:46 AMNW5:33 PMNE12:43 AMS251,544 mi
21
96%-9:30 AMNW6:32 PMENE1:33 AMS250,475 mi
22
91%-10:08 AMWNW7:35 PMENE2:23 AMS248,989 mi
23
85%-10:40 AMWNW8:40 PMENE3:11 AMS247,068 mi
24
77%-11:08 AMWNW9:46 PMENE3:57 AMS244,697 mi
25
67%-11:32 AMWNW10:52 PME4:42 AMS241,889 mi
26
50%-11:55 AMW-5:27 AMS238,699 mi
27
46%12:00 AME12:18 PMW-6:11 AMS235,243 mi
28
35%1:10 AME12:42 PMWSW-6:58 AMS231,708 mi
29
24%2:24 AMESE1:10 PMWSW-7:47 AMS228,353 mi
30
14%3:41 AMESE1:43 PMWSW-8:42 AMS225,490 mi
31
7%5:01 AMESE2:25 PMWSW-9:43 AMS223,447 mi

Humidity Comfort Levels in December 2021 in Crystal Lake

Humidity Comfort Levels in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 December 2021 in Crystal Lake

Wind Speed in December 2021 in Crystal Lake1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph10 mph10 mph20 mph20 mph30 mph30 mph40 mph40 mph50 mph50 mph60 mph60 mph70 mph70 mphNovJan
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in December 2021 in Crystal Lake

Hourly Wind Speed in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
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 in Crystal Lake

Hourly Wind Direction in 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMNovJan
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in December 2021 in Crystal Lake

Atmospheric Pressure in December 2021 in Crystal Lake18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313129.0 inHg29.0 inHg29.2 inHg29.2 inHg29.4 inHg29.4 inHg29.6 inHg29.6 inHg29.8 inHg29.8 inHg30.0 inHg30.0 inHg30.2 inHg30.2 inHg30.4 inHg30.4 inHgNovJan
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the Chicago O'Hare International Airport page.

See all nearby weather stations

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