Weather History for Chicago, IL

Change the Weather History Date:

Tuesday, July 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 89 °F 74 °F  
Max Temperature 99 °F 84 °F 100 °F (1942)
Min Temperature 79 °F 64 °F 51 °F (1985)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 14 48  
Since 1 July heating degree days 0 0  
Cooling Degree Days 24 9  
Month to date cooling degree days 313 152  
Year to date cooling degree days 775 371  
Since 1 June cooling degree days 604 317  
Growing Degree Days 39 (Base 50)    
Moisture  
Dew Point 67 °F    
Average Humidity 54    
Maximum Humidity 74    
Minimum Humidity 33    
Precipitation  
Precipitation 0.00 in 0.11 in 3.04 in (1969)
Month to date precipitation 0.56 1.88  
Year to date precipitation 13.67 18.41  
Snow  
Snow 0.00 in 0.00 in T in (2003)
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 29.83 in    
Wind  
Wind Speed 10 mph (WSW)    
Max Wind Speed 18 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jul. 17, 2012 Rise Set
Actual Time 5:31 AM CDT 8:23 PM CDT
Civil Twilight 4:58 AM CDT 8:56 PM CDT
Nautical Twilight 4:16 AM CDT 9:38 PM CDT
Astronomical Twilight 3:28 AM CDT 10:26 PM CDT
Moon 4:08 AM CDT (7/17) 7:12 PM CDT (7/17)
Length of Visible Light 15h 58m
Length of Day
14h 52m
Waning Crescent, 2% of the Moon is Illuminated
Jul 17
Waning Crescent
Jul 18
New
Jul 26
First Quarter
Aug 1
Full
Aug 9
Last 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 82.9 °F 86.5 °F 69.1 °F 63% 29.83 in 10.0 mi SW 8.1 mph - N/A   Clear
1:51 AM 82.0 °F 85.9 °F 70.0 °F 67% 29.83 in 10.0 mi SW 6.9 mph - N/A   Clear
2:51 AM 82.0 °F 85.5 °F 69.1 °F 65% 29.83 in 10.0 mi SW 5.8 mph - N/A   Clear
3:51 AM 81.0 °F 84.1 °F 69.1 °F 67% 29.83 in 10.0 mi SW 5.8 mph - N/A   Clear
4:51 AM 80.1 °F 82.9 °F 69.1 °F 69% 29.84 in 10.0 mi SW 5.8 mph - N/A   Partly Cloudy
5:51 AM 79.0 °F - 69.1 °F 72% 29.84 in 10.0 mi WSW 6.9 mph - N/A   Partly Cloudy
6:51 AM 81.0 °F 84.1 °F 69.1 °F 67% 29.84 in 10.0 mi WSW 8.1 mph - N/A   Clear
7:51 AM 84.9 °F 88.8 °F 69.1 °F 59% 29.85 in 10.0 mi West 9.2 mph - N/A   Clear
8:51 AM 89.1 °F 93.7 °F 69.1 °F 52% 29.85 in 10.0 mi West 8.1 mph - N/A   Clear
9:51 AM 91.9 °F 95.9 °F 68.0 °F 45% 29.85 in 10.0 mi SW 10.4 mph - N/A   Clear
10:51 AM 95.0 °F 99.0 °F 66.9 °F 40% 29.84 in 10.0 mi WSW 12.7 mph - N/A   Partly Cloudy
11:51 AM 97.0 °F 100.4 °F 66.0 °F 36% 29.84 in 10.0 mi West 12.7 mph 18.4 mph N/A   Scattered Clouds
12:51 PM 97.0 °F 99.9 °F 64.9 °F 35% 29.83 in 10.0 mi West 15.0 mph 20.7 mph N/A   Scattered Clouds
1:51 PM 99.0 °F 101.7 °F 64.0 °F 32% 29.82 in 10.0 mi West 13.8 mph 20.7 mph N/A   Scattered Clouds
2:51 PM 98.1 °F 101.2 °F 64.9 °F 34% 29.80 in 10.0 mi WSW 15.0 mph 20.7 mph N/A   Scattered Clouds
3:51 PM 99.0 °F 101.7 °F 64.0 °F 32% 29.80 in 10.0 mi West 15.0 mph 24.2 mph N/A   Scattered Clouds
4:51 PM 98.1 °F 100.7 °F 64.0 °F 33% 29.77 in 10.0 mi WSW 16.1 mph 25.3 mph N/A   Scattered Clouds
5:51 PM 97.0 °F 99.9 °F 64.9 °F 35% 29.79 in 10.0 mi West 16.1 mph 23.0 mph N/A   Scattered Clouds
6:51 PM 95.0 °F 98.5 °F 66.2 °F 39% 29.82 in 10.0 mi West 18.4 mph - N/A   Scattered Clouds
7:51 PM 93.0 °F 95.0 °F 64.9 °F 39% 29.81 in 10.0 mi West 12.7 mph 18.4 mph N/A   Scattered Clouds
8:51 PM 91.0 °F 93.8 °F 66.0 °F 44% 29.81 in 10.0 mi WSW 8.1 mph - N/A   Scattered Clouds
9:51 PM 87.1 °F 91.3 °F 69.1 °F 55% 29.83 in 10.0 mi NNE 9.2 mph - N/A   Scattered Clouds
10:51 PM 82.0 °F 86.3 °F 71.1 °F 69% 29.84 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
11:51 PM 80.1 °F 83.8 °F 72.0 °F 76% 29.83 in 10.0 mi Calm Calm - N/A   Scattered Clouds