Weather History for Chicago, IL

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Monday, May 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 61 °F 61 °F  
Max Temperature 67 °F 72 °F 92 °F (1977)
Min Temperature 54 °F 50 °F 31 °F (2002)
Degree Days  
Heating Degree Days 4 6  
Month to date heating degree days 82 176  
Since 1 July heating degree days 4872 6243  
Cooling Degree Days 0 2  
Month to date cooling degree days 51 22  
Year to date cooling degree days 94 32  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 56    
Maximum Humidity 72    
Minimum Humidity 40    
Precipitation  
Precipitation 0.00 in 0.13 in 1.16 in (1974)
Month to date precipitation 3.26 2.49  
Year to date precipitation 11.09 11.89  
Snow  
Snow 0.00 in 0.00 in T in (2004)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 19.8 36.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 13 mph (North)    
Max Wind Speed 25 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 21, 2012 Rise Set
Actual Time 5:25 AM CDT 8:11 PM CDT
Civil Twilight 4:52 AM CDT 8:44 PM CDT
Nautical Twilight 4:11 AM CDT 9:25 PM CDT
Astronomical Twilight 3:24 AM CDT 10:13 PM CDT
Moon 5:47 AM CDT (5/21) 9:02 PM CDT (5/21)
Length of Visible Light 15h 51m
Length of Day
14h 46m
New Moon, 0% of the Moon is Illuminated
May 21
New Moon
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 66.0 °F 53.1 °F 63% 30.04 in 10.0 mi WNW 8.1 mph - 0.00 in Rain Light Rain
1:51 AM 64.9 °F 52.0 °F 63% 30.05 in 10.0 mi NNW 11.5 mph - 0.00 in   Mostly Cloudy
2:51 AM 63.0 °F 50.0 °F 63% 30.05 in 10.0 mi NNW 16.1 mph - N/A   Overcast
3:51 AM 61.0 °F 48.9 °F 64% 30.06 in 10.0 mi NNW 9.2 mph 19.6 mph N/A   Overcast
4:51 AM 59.0 °F 48.9 °F 69% 30.05 in 10.0 mi NNW 8.1 mph - N/A   Mostly Cloudy
5:51 AM 57.9 °F 48.0 °F 70% 30.09 in 10.0 mi North 12.7 mph - N/A   Mostly Cloudy
6:01 AM 57.2 °F 48.2 °F 72% 30.10 in 10.0 mi North 12.7 mph 26.5 mph N/A   Overcast
6:35 AM 59.0 °F 48.2 °F 67% 30.10 in 10.0 mi North 9.2 mph - N/A   Overcast
6:51 AM 57.9 °F 48.0 °F 70% 30.10 in 10.0 mi NNW 11.5 mph - N/A   Overcast
7:08 AM 57.2 °F 48.2 °F 72% 30.11 in 10.0 mi North 10.4 mph - N/A   Overcast
7:51 AM 57.9 °F 46.9 °F 67% 30.12 in 10.0 mi North 15.0 mph - N/A   Overcast
8:51 AM 57.9 °F 46.9 °F 67% 30.14 in 10.0 mi North 12.7 mph - N/A   Overcast
9:51 AM 59.0 °F 46.0 °F 62% 30.16 in 10.0 mi North 13.8 mph - N/A   Overcast
10:51 AM 57.9 °F 45.0 °F 62% 30.17 in 10.0 mi NNE 13.8 mph - N/A   Overcast
11:43 AM 60.8 °F 44.6 °F 55% 30.18 in 10.0 mi NNE 16.1 mph - N/A   Overcast
11:51 AM 61.0 °F 44.1 °F 54% 30.17 in 10.0 mi NNE 13.8 mph - N/A   Overcast
12:51 PM 64.0 °F 39.9 °F 41% 30.17 in 10.0 mi NE 21.9 mph 31.1 mph N/A   Scattered Clouds
1:51 PM 64.9 °F 41.0 °F 42% 30.16 in 10.0 mi North 21.9 mph 28.8 mph N/A   Partly Cloudy
2:51 PM 66.0 °F 41.0 °F 40% 30.15 in 10.0 mi NNE 21.9 mph 26.5 mph N/A   Scattered Clouds
3:51 PM 66.0 °F 41.0 °F 40% 30.14 in 10.0 mi NNE 17.3 mph 26.5 mph N/A   Scattered Clouds
4:51 PM 66.9 °F 41.0 °F 39% 30.13 in 10.0 mi NNE 16.1 mph 27.6 mph N/A   Partly Cloudy
5:51 PM 64.9 °F 39.0 °F 39% 30.12 in 10.0 mi NE 13.8 mph 21.9 mph N/A   Partly Cloudy
6:51 PM 63.0 °F 39.0 °F 41% 30.12 in 10.0 mi NNE 13.8 mph 26.5 mph N/A   Partly Cloudy
7:51 PM 61.0 °F 39.9 °F 46% 30.12 in 10.0 mi NNE 9.2 mph - N/A   Partly Cloudy
8:51 PM 59.0 °F 39.0 °F 48% 30.12 in 10.0 mi NNE 8.1 mph - N/A   Partly Cloudy
9:51 PM 57.9 °F 39.9 °F 51% 30.12 in 10.0 mi NNE 5.8 mph - N/A   Clear
10:51 PM 55.9 °F 41.0 °F 57% 30.12 in 10.0 mi North 3.5 mph - N/A   Clear
11:51 PM 55.0 °F 39.9 °F 57% 30.11 in 10.0 mi North 4.6 mph - N/A   Clear