Weather History for Chicago, IL

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Monday, May 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 77 °F 60 °F  
Max Temperature 89 °F 71 °F 95 °F (1977)
Min Temperature 65 °F 49 °F 33 °F (2002)
Degree Days  
Heating Degree Days 0 6  
Month to date heating degree days 128 170  
Since 1 July heating degree days 6066 6237  
Cooling Degree Days 12 2  
Month to date cooling degree days 43 20  
Year to date cooling degree days 51 30  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 61 °F    
Average Humidity 61    
Maximum Humidity 93    
Minimum Humidity 29    
Precipitation  
Precipitation 1.09 in 0.12 in 2.54 in (1975)
Month to date precipitation 1.72 2.36  
Year to date precipitation 18.99 11.76  
Snow  
Snow 0.00 in 0.00 in 0.00 in ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 30.1 36.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.74 in    
Wind  
Wind Speed 14 mph (SW)    
Max Wind Speed 31 mph    
Max Gust Speed 45 mph    
Visibility 9 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 20, 2013 Rise Set
Actual Time 5:26 AM CDT 8:10 PM CDT
Civil Twilight 4:53 AM CDT 8:43 PM CDT
Nautical Twilight 4:13 AM CDT 9:24 PM CDT
Astronomical Twilight 3:26 AM CDT 10:11 PM CDT
Moon 3:13 PM CDT (5/20) 2:26 AM CDT (5/20)
Length of Visible Light 15h 49m
Length of Day
14h 44m
Waxing Gibbous, 75% of the Moon is Illuminated
May 20
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 78.1 °F - 66.9 °F 68% 29.75 in 10.0 mi South 18.4 mph 25.3 mph N/A   Overcast
1:51 AM 75.9 °F - 68.0 °F 76% 29.74 in 10.0 mi South 11.5 mph 21.9 mph N/A   Mostly Cloudy
2:51 AM 75.9 °F - 66.9 °F 74% 29.73 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
3:51 AM 75.0 °F - 66.0 °F 73% 29.73 in 10.0 mi SSW 13.8 mph - N/A   Mostly Cloudy
4:51 AM 75.0 °F - 66.0 °F 73% 29.74 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
5:51 AM 73.9 °F - 66.0 °F 76% 29.74 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
6:51 AM 75.0 °F - 66.9 °F 76% 29.76 in 10.0 mi SSW 15.0 mph 20.7 mph N/A   Mostly Cloudy
7:51 AM 75.0 °F - 64.0 °F 69% 29.78 in 10.0 mi WSW 12.7 mph 23.0 mph N/A   Mostly Cloudy
8:51 AM 73.9 °F - 60.1 °F 62% 29.73 in 10.0 mi SSE 13.8 mph - N/A   Overcast
9:51 AM 75.9 °F - 61.0 °F 60% 29.76 in 10.0 mi South 13.8 mph 18.4 mph N/A   Overcast
10:51 AM 80.1 °F 80.4 °F 57.0 °F 45% 29.75 in 10.0 mi SSW 20.7 mph 26.5 mph N/A   Mostly Cloudy
11:51 AM 82.9 °F 82.1 °F 55.9 °F 39% 29.76 in 10.0 mi SW 18.4 mph 28.8 mph N/A   Scattered Clouds
12:51 PM 84.2 °F 83.0 °F 55.4 °F 37% 29.78 in 10.0 mi SW 25.3 mph 32.2 mph N/A   Scattered Clouds
1:51 PM 87.1 °F 85.7 °F 55.9 °F 35% 29.73 in 10.0 mi SSW 19.6 mph 31.1 mph N/A   Scattered Clouds
2:51 PM 88.0 °F - 52.0 °F 29% 29.73 in 10.0 mi SW 16.1 mph 28.8 mph N/A   Mostly Cloudy
3:51 PM 87.8 °F - 51.8 °F 29% 29.75 in 10.0 mi WSW 23.0 mph 32.2 mph N/A   Scattered Clouds
4:51 PM 88.0 °F 85.9 °F 54.0 °F 31% 29.69 in 10.0 mi WSW 15.0 mph 24.2 mph N/A   Scattered Clouds
5:51 PM 86.0 °F 84.5 °F 55.0 °F 35% 29.70 in 10.0 mi WSW 12.7 mph - N/A   Scattered Clouds
6:51 PM 84.9 °F 83.6 °F 55.0 °F 36% 29.70 in 10.0 mi WSW 13.8 mph - N/A   Scattered Clouds
7:51 PM 82.9 °F 82.1 °F 55.9 °F 39% 29.70 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy
8:51 PM 78.1 °F - 57.0 °F 48% 29.70 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
9:51 PM 80.1 °F 81.1 °F 61.0 °F 52% 29.70 in 10.0 mi South 10.4 mph - N/A   Overcast
10:15 PM 80.6 °F 82.3 °F 64.4 °F 58% 29.71 in 10.0 mi South 6.9 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
10:38 PM 71.6 °F - 66.2 °F 83% 29.72 in 2.0 mi WSW 27.6 mph 44.9 mph 0.02 in Rain , Thunderstorm Thunderstorms and Rain
10:45 PM 66.2 °F - 64.4 °F 94% 29.74 in 2.0 mi West 15.0 mph 44.9 mph 0.26 in Rain , Thunderstorm Heavy Thunderstorms and Rain
10:51 PM 66.9 °F - 64.9 °F 93% 29.72 in 1.8 mi WSW 15.0 mph 25.3 mph 0.32 in Rain , Thunderstorm Heavy Thunderstorms and Rain
10:56 PM 66.2 °F - 64.4 °F 94% 29.78 in 1.0 mi WSW 26.5 mph 34.5 mph 0.12 in Rain , Thunderstorm Heavy Thunderstorms and Rain
11:10 PM 66.2 °F - 64.4 °F 94% 29.76 in 2.0 mi WSW 15.0 mph 24.2 mph 0.54 in Rain , Thunderstorm Heavy Thunderstorms and Rain
11:18 PM 66.2 °F - 64.4 °F 94% 29.75 in 5.0 mi West 10.4 mph 23.0 mph 0.59 in Rain , Thunderstorm Heavy Thunderstorms and Rain
11:25 PM 66.2 °F - 64.4 °F 94% 29.75 in 7.0 mi West 8.1 mph - 0.61 in Rain , Thunderstorm Thunderstorms and Rain
11:51 PM 66.9 °F - 64.0 °F 90% 29.75 in 9.0 mi SW 6.9 mph - 0.68 in Rain , Thunderstorm Thunderstorms and Rain