History for Chicago, IL

Sunday, August 12, 2012 — View Current Conditions
Sunday, August 12, 2012
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Daily Weekly Monthly Custom
  Actual Average Record
Temperature
Mean Temperature 66 °F 73 °F  
Max Temperature 76 °F 82 °F 101 °F (1918)
Min Temperature 55 °F 64 °F 47 °F (1982)
Degree Days
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 14 52  
Since 1 July heating degree days 0 4  
Cooling Degree Days 1 8  
Month to date cooling degree days 119 103  
Year to date cooling degree days 1087 605  
Since 1 June cooling degree days 916 551  
Growing Degree Days 15 (Base 50)    
Moisture
Dew Point 54 °F    
Average Humidity 66    
Maximum Humidity 93    
Minimum Humidity 38    
Precipitation
Precipitation T in 0.17 in 2.03 in (1908)
Month to date precipitation 0.60 1.95  
Year to date precipitation 17.37 22.18  
Snow
Snow 0.00 in 0.00 in 0.00 in ()
Month to date snowfall 0.0 0.0  
Since 1 June snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure
Sea Level Pressure 30.00 in    
Wind
Wind Speed 4 mph (SW)    
Max Wind Speed 10 mph    
Max Gust Speed 15 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
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Astronomy
May. 24, 2013 Rise Set
Actual Time 5:56 AM CDT 7:55 PM CDT
Civil Twilight 5:26 AM CDT 8:25 PM CDT
Nautical Twilight 4:49 AM CDT 9:02 PM CDT
Astronomical Twilight 4:09 AM CDT 9:42 PM CDT
Moon 1:07 AM CDT (8/12) 4:22 PM CDT (8/12)
Length Of Visible Light 14h 59m
Length of Day
13h 58m
Waning Crescent, 24% of the Moon is Illuminated
Aug 12
Waning Crescent
Aug 17
New
Aug 24
First Quarter
Aug 31
Full
Sep 8
Last Quarter
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Hourly Observations
Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 63.0 °F 55.9 °F 78% 30.01 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
1:51 AM 64.0 °F 57.0 °F 78% 30.00 in 10.0 mi SW 4.6 mph - N/A   Scattered Clouds
2:51 AM 62.1 °F 55.9 °F 80% 30.00 in 10.0 mi WSW 4.6 mph - N/A   Partly Cloudy
3:51 AM 61.0 °F 55.9 °F 83% 30.00 in 10.0 mi WSW 4.6 mph - N/A   Clear
4:51 AM 60.1 °F 55.9 °F 86% 30.01 in 10.0 mi WSW 3.5 mph - N/A   Clear
5:51 AM 57.0 °F 55.0 °F 93% 30.02 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:51 AM 62.6 °F 57.2 °F 82% 30.03 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
7:51 AM 64.9 °F 57.0 °F 75% 30.02 in 10.0 mi WSW 3.5 mph - N/A   Overcast
8:51 AM 68.0 °F 57.9 °F 70% 30.03 in 10.0 mi SW 4.6 mph - N/A   Overcast
9:51 AM 69.1 °F 57.0 °F 65% 30.03 in 10.0 mi SW 4.6 mph - N/A   Overcast
10:51 AM 72.0 °F 55.9 °F 57% 30.03 in 10.0 mi SW 5.8 mph - N/A   Overcast
11:51 AM 73.0 °F 53.1 °F 49% 30.01 in 10.0 mi SW 4.6 mph - N/A   Overcast
12:51 PM 73.9 °F 53.1 °F 48% 30.01 in 10.0 mi SSW 4.6 mph - N/A   Overcast
1:51 PM 75.0 °F 50.0 °F 41% 30.01 in 10.0 mi SW 8.1 mph - N/A   Overcast
2:51 PM 75.0 °F 48.9 °F 40% 30.00 in 10.0 mi SW 5.8 mph - N/A   Overcast
3:51 PM 73.9 °F 50.0 °F 43% 30.00 in 10.0 mi WSW 6.9 mph - N/A   Overcast
4:51 PM 75.0 °F 51.1 °F 43% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
5:51 PM 73.9 °F 52.0 °F 46% 29.98 in 10.0 mi South 4.6 mph - N/A   Overcast
6:51 PM 72.0 °F 53.1 °F 51% 29.97 in 10.0 mi South 4.6 mph - N/A   Overcast
7:51 PM 72.0 °F 54.0 °F 53% 29.97 in 10.0 mi Calm Calm - 0.00 in   Overcast
8:51 PM 70.0 °F 54.0 °F 57% 29.97 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
9:51 PM 66.9 °F 57.0 °F 70% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
10:51 PM 69.1 °F 54.0 °F 58% 29.98 in 10.0 mi SSE 4.6 mph - N/A   Overcast
11:51 PM 68.0 °F 55.9 °F 65% 29.96 in 10.0 mi Calm Calm - N/A   Overcast
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