Weather History for Chicago, IL

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Tuesday, May 1, 2007

  Actual Average Record
Temperature  
Mean Temperature 67 °F 54 °F  
Max Temperature 83 °F 65 °F 90 °F (1951)
Min Temperature 50 °F 44 °F 30 °F (1943)
Degree Days  
Heating Degree Days 0 11  
Month to date heating degree days 0 11  
Since 1 July heating degree days 5922 6078  
Cooling Degree Days 2 0  
Month to date cooling degree days 2 0  
Year to date cooling degree days 11 10  
Growing Degree Days 17 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 65    
Maximum Humidity 83    
Minimum Humidity 47    
Precipitation  
Precipitation 0.00 in 0.11 in 2.35 in (1873)
Month to date precipitation 0.00 0.11  
Year to date precipitation 10.48 9.51  
Snow  
Snow 0.00 in 0.00 in 1.60 in (1940)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 35.6 36.4  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.82 in    
Wind  
Wind Speed 9 mph (East)    
Max Wind Speed 22 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 01, 2007 Rise Set
Actual Time 5:48 AM CDT 7:50 PM CDT
Civil Twilight 5:17 AM CDT 8:20 PM CDT
Nautical Twilight 4:40 AM CDT 8:58 PM CDT
Astronomical Twilight 4:00 AM CDT 9:38 PM CDT
Moon 7:32 PM CDT (5/1) 5:05 AM CDT (5/1)
Length of Visible Light 15h 03m
Length of Day
14h 02m
Full, 100% of the Moon is Illuminated
May 1
Full
May 2
Full
May 9
Last Quarter
May 16
New
May 23
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 53.1 °F - 42.1 °F 66% 29.89 in 10.0 mi ESE 8.1 mph - N/A   Partly Cloudy
1:51 AM 55.0 °F - 43.0 °F 64% 29.88 in 10.0 mi ESE 10.4 mph - N/A   Scattered Clouds
2:51 AM 54.0 °F - 43.0 °F 66% 29.87 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
3:51 AM 52.0 °F - 43.0 °F 71% 29.84 in 10.0 mi East 3.5 mph - N/A   Clear
4:51 AM 52.0 °F - 44.1 °F 74% 29.84 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
5:51 AM 52.0 °F - 44.1 °F 74% 29.83 in 10.0 mi NE 4.6 mph - N/A   Mostly Cloudy
6:51 AM 54.0 °F - 48.0 °F 80% 29.82 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
7:51 AM 57.9 °F - 48.9 °F 72% 29.82 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
8:51 AM 64.0 °F - 52.0 °F 65% 29.79 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
9:51 AM 72.0 °F - 57.0 °F 59% 29.78 in 10.0 mi WSW 12.7 mph - N/A   Mostly Cloudy
10:51 AM 75.9 °F - 59.0 °F 56% 29.76 in 10.0 mi WSW 15.0 mph 20.7 mph N/A   Mostly Cloudy
11:51 AM 79.0 °F - 61.0 °F 54% 29.76 in 10.0 mi WSW 16.1 mph 21.9 mph N/A   Mostly Cloudy
12:51 PM 82.9 °F 83.7 °F 62.1 °F 49% 29.74 in 10.0 mi West 17.3 mph 23.0 mph N/A   Mostly Cloudy
1:51 PM 82.9 °F 83.3 °F 61.0 °F 47% 29.74 in 10.0 mi West 19.6 mph 25.3 mph N/A   Mostly Cloudy
2:51 PM 82.9 °F 83.2 °F 60.1 °F 46% 29.75 in 10.0 mi West 16.1 mph 23.0 mph N/A   Mostly Cloudy
3:51 PM 81.0 °F 81.6 °F 60.1 °F 49% 29.76 in 10.0 mi West 12.7 mph 20.7 mph N/A   Mostly Cloudy
4:51 PM 73.0 °F - 55.0 °F 53% 29.78 in 10.0 mi NE 9.2 mph - N/A   Mostly Cloudy
5:51 PM 64.0 °F - 50.0 °F 60% 29.81 in 10.0 mi NE 12.7 mph - N/A   Mostly Cloudy
6:51 PM 59.0 °F - 46.9 °F 64% 29.83 in 10.0 mi NE 11.5 mph - N/A   Mostly Cloudy
7:51 PM 57.0 °F - 45.0 °F 64% 29.86 in 10.0 mi NE 9.2 mph - N/A   Overcast
8:51 PM 55.4 °F - 46.4 °F 72% 29.89 in 10.0 mi East 5.8 mph - N/A   Overcast
9:51 PM 55.9 °F - 45.0 °F 67% 29.90 in 10.0 mi East 4.6 mph - N/A   Overcast
10:51 PM 53.1 °F - 46.0 °F 77% 29.90 in 10.0 mi Calm Calm - N/A   Overcast
11:51 PM 55.0 °F - 46.0 °F 72% 29.91 in 9.0 mi North 8.1 mph - N/A   Mostly Cloudy