Chicago, IL

3:55 PM CDT on June 19, 2018 (GMT -0500)
Chicago-O'Hare International

Weather History for KORD - December, 2017

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Thursday, December 7, 2017

  Actual Average Record
Temperature  
Mean Temperature 24 °F 30 °F  
Max Temperature 29 °F 37 °F 64 °F (1916)
Min Temperature 19 °F 23 °F -6 °F (1882)
Degree Days  
Heating Degree Days 41 35  
Month to date heating degree days 180 235  
Since 1 July heating degree days 1223 1491  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 991 843  
Moisture  
Dew Point 11 °F    
Average Humidity 58    
Maximum Humidity 74    
Minimum Humidity 42    
Precipitation  
Precipitation T in 0.09 in 1.12 in (1980)
Month to date precipitation 0.16 0.63  
Year to date precipitation 42.67 35.27  
Snow  
Snow T in 0.20 in 6.90 in (1978)
Month to date snowfall T 1.5  
Since 1 July snowfall 0.1 2.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 12 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Dec. 07, 2017 Rise Set
Actual Time 7:06 AM CST 4:20 PM CST
Civil Twilight 6:34 AM CST 4:51 PM CST
Nautical Twilight 5:59 AM CST 5:26 PM CST
Astronomical Twilight 5:25 AM CST 6:00 PM CST
Moon 9:08 PM CST (12/7) 10:43 AM CST (12/7)
Length of Visible Light 10h 16m
Length of Day
9h 13m
Waning Gibbous, 77% of the Moon is Illuminated
Dec 7
Waning Gibbous
Dec 10
Last Quarter
Dec 18
New
Dec 26
First Quarter
Jan 1
Full

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:05 AM 27.0 °F 16.1 °F 15.1 °F 61% 30.05 in 10.0 mi West 12.7 mph - N/A   Overcast
12:51 AM 26.1 °F 15.0 °F 16.0 °F 66% 30.08 in 10.0 mi WNW 12.7 mph - 0.00 in Snow Light Snow
1:51 AM 25.0 °F 12.2 °F 16.0 °F 69% 30.09 in 10.0 mi WNW 16.1 mph - 0.00 in Snow Light Snow
2:09 AM 25.0 °F 11.7 °F 15.1 °F 66% 30.07 in 9.0 mi West 17.3 mph 21.9 mph 0.00 in Snow Light Snow
2:20 AM 25.0 °F 14.2 °F 15.1 °F 66% 30.08 in 9.0 mi WNW 11.5 mph - 0.00 in Snow Light Snow
2:42 AM 23.0 °F 10.1 °F 15.1 °F 72% 30.09 in 5.0 mi NW 15.0 mph - 0.00 in Snow Light Snow
2:51 AM 23.0 °F 9.2 °F 15.1 °F 72% 30.12 in 6.0 mi NW 17.3 mph - 0.00 in Snow Light Snow
3:10 AM 23.0 °F 10.1 °F 14.0 °F 68% 30.09 in 7.0 mi NW 15.0 mph - 0.00 in Snow Light Snow
3:51 AM 21.9 °F 9.8 °F 12.0 °F 66% 30.12 in 9.0 mi WNW 12.7 mph - 0.00 in Snow Light Snow
4:51 AM 21.0 °F 8.6 °F 14.0 °F 74% 30.13 in 6.0 mi NW 12.7 mph - 0.00 in Snow Light Snow
5:51 AM 19.9 °F 7.3 °F 12.0 °F 71% 30.15 in 10.0 mi WNW 12.7 mph - 0.00 in   Mostly Cloudy
6:51 AM 19.0 °F 6.8 °F 12.9 °F 77% 30.17 in 10.0 mi West 11.5 mph - N/A   Scattered Clouds
7:51 AM 19.0 °F 5.0 °F 12.0 °F 74% 30.18 in 10.0 mi WNW 15.0 mph - N/A   Scattered Clouds
8:08 AM 19.9 °F 8.6 °F 12.0 °F 71% 30.15 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
8:51 AM 19.9 °F 6.7 °F 12.0 °F 71% 30.19 in 10.0 mi WNW 13.8 mph - 0.00 in Snow Light Snow
9:51 AM 21.0 °F 7.6 °F 10.9 °F 65% 30.21 in 10.0 mi WNW 15.0 mph - 0.00 in Snow Light Snow
10:51 AM 23.0 °F 10.6 °F 12.9 °F 65% 30.19 in 10.0 mi West 13.8 mph - 0.00 in Snow Light Snow
11:14 AM 23.0 °F 11.7 °F 12.0 °F 63% 30.15 in 10.0 mi West 11.5 mph - 0.00 in   Overcast
11:51 AM 25.0 °F 12.6 °F 12.0 °F 58% 30.17 in 10.0 mi WNW 15.0 mph - 0.00 in   Mostly Cloudy
12:06 PM 25.0 °F 13.6 °F 12.0 °F 58% 30.13 in 10.0 mi West 12.7 mph 21.9 mph N/A   Scattered Clouds
12:51 PM 27.0 °F 17.3 °F 12.9 °F 56% 30.15 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
1:51 PM 28.0 °F 17.5 °F 10.9 °F 49% 30.14 in 10.0 mi West 12.7 mph 21.9 mph N/A   Partly Cloudy
2:51 PM 28.0 °F 16.5 °F 9.0 °F 45% 30.14 in 10.0 mi WNW 15.0 mph 19.6 mph N/A   Clear
3:51 PM 27.0 °F 14.7 °F 8.1 °F 45% 30.13 in 10.0 mi WNW 16.1 mph - N/A   Clear
4:51 PM 26.1 °F 15.6 °F 8.1 °F 47% 30.15 in 10.0 mi West 11.5 mph - N/A   Clear
5:51 PM 25.0 °F 15.5 °F 7.0 °F 46% 30.16 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
6:51 PM 24.1 °F 13.7 °F 6.1 °F 46% 30.16 in 10.0 mi West 10.4 mph - N/A   Clear
7:51 PM 23.0 °F 11.7 °F 7.0 °F 50% 30.16 in 10.0 mi West 11.5 mph - N/A   Clear
8:51 PM 21.0 °F 11.4 °F 6.1 °F 53% 30.14 in 10.0 mi West 8.1 mph - N/A   Clear
9:51 PM 19.9 °F 10.1 °F 7.0 °F 57% 30.14 in 10.0 mi WSW 8.1 mph - N/A   Clear
10:51 PM 19.9 °F 9.3 °F 6.1 °F 55% 30.13 in 10.0 mi WSW 9.2 mph - N/A   Clear
11:51 PM 19.0 °F 9.0 °F 6.1 °F 57% 30.12 in 10.0 mi WSW 8.1 mph - N/A   Clear