Weather History for Chicago, IL

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Wednesday, October 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 61 °F 52 °F  
Max Temperature 68 °F 62 °F 86 °F (1950)
Min Temperature 54 °F 42 °F 26 °F (1948)
Degree Days  
Heating Degree Days 4 13  
Month to date heating degree days 210 180  
Since 1 July heating degree days 317 298  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 10  
Year to date cooling degree days 1321 842  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 75    
Maximum Humidity 97    
Minimum Humidity 52    
Precipitation  
Precipitation 0.51 in 0.10 in 3.61 in (1988)
Month to date precipitation 2.06 1.69  
Year to date precipitation 22.66 30.03  
Snow  
Snow 0.00 in 0.00 in T in (1976)
Month to date snowfall 0.0 0.1  
Since 1 July snowfall 0.0 0.1  
Since 1 September snowfall 0.0 0.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.42 in    
Wind  
Wind Speed 18 mph (South)    
Max Wind Speed 29 mph    
Max Gust Speed 36 mph    
Visibility 8 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Oct. 17, 2012 Rise Set
Actual Time 7:07 AM CDT 6:06 PM CDT
Civil Twilight 6:38 AM CDT 6:34 PM CDT
Nautical Twilight 6:06 AM CDT 7:06 PM CDT
Astronomical Twilight 5:34 AM CDT 7:39 PM CDT
Moon 9:44 AM CDT (10/17) 7:38 PM CDT (10/17)
Length of Visible Light 11h 55m
Length of Day
10h 59m
Waxing Crescent, 7% of the Moon is Illuminated
Oct 17
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
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 52.0 °F 60% 29.54 in 10.0 mi SSW 21.9 mph 31.1 mph N/A   Mostly Cloudy
1:51 AM 66.9 °F 50.0 °F 54% 29.54 in 10.0 mi SSW 23.0 mph - N/A   Overcast
2:51 AM 66.0 °F 48.9 °F 54% 29.53 in 10.0 mi SSW 21.9 mph 32.2 mph N/A   Mostly Cloudy
3:51 AM 64.9 °F 48.9 °F 56% 29.52 in 10.0 mi SSW 19.6 mph - N/A   Partly Cloudy
4:51 AM 63.0 °F 48.9 °F 60% 29.52 in 10.0 mi SSW 19.6 mph - N/A   Clear
5:51 AM 59.0 °F 50.0 °F 72% 29.53 in 10.0 mi South 13.8 mph - N/A   Partly Cloudy
6:51 AM 57.9 °F 48.9 °F 72% 29.52 in 10.0 mi South 15.0 mph - N/A   Partly Cloudy
7:51 AM 57.9 °F 48.9 °F 72% 29.53 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
8:51 AM 60.1 °F 48.9 °F 67% 29.52 in 10.0 mi South 15.0 mph - N/A   Mostly Cloudy
9:51 AM 62.1 °F 48.9 °F 62% 29.52 in 10.0 mi SSW 18.4 mph 26.5 mph N/A   Overcast
10:51 AM 64.0 °F 51.1 °F 63% 29.50 in 10.0 mi SSW 16.1 mph 25.3 mph N/A   Overcast
11:51 AM 64.9 °F 52.0 °F 63% 29.48 in 10.0 mi South 15.0 mph - N/A   Overcast
12:02 PM 64.4 °F 51.8 °F 64% 29.48 in 10.0 mi South 16.1 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
12:14 PM 62.6 °F 53.6 °F 72% 29.48 in 10.0 mi South 16.1 mph - 0.00 in Rain Light Rain
12:51 PM 64.9 °F 54.0 °F 68% 29.46 in 10.0 mi South 17.3 mph - 0.00 in   Overcast
1:51 PM 66.9 °F 54.0 °F 63% 29.44 in 10.0 mi SSW 20.7 mph 29.9 mph N/A   Overcast
2:51 PM 66.0 °F 54.0 °F 65% 29.41 in 10.0 mi SSW 24.2 mph 28.8 mph N/A   Overcast
3:38 PM 64.4 °F 55.4 °F 73% 29.41 in 10.0 mi South 16.1 mph 23.0 mph N/A   Overcast
3:51 PM 64.9 °F 55.0 °F 70% 29.41 in 10.0 mi South 18.4 mph 24.2 mph N/A   Overcast
4:09 PM 64.4 °F 55.4 °F 73% 29.42 in 10.0 mi South 24.2 mph 31.1 mph N/A   Overcast
4:34 PM 60.8 °F 57.2 °F 88% 29.42 in 4.0 mi South 19.6 mph 28.8 mph 0.01 in Rain Rain
4:51 PM 60.1 °F 57.9 °F 93% 29.40 in 3.0 mi South 17.3 mph 24.2 mph 0.06 in Rain Rain
5:05 PM 60.8 °F 57.2 °F 88% 29.39 in 2.5 mi SSE 16.1 mph - 0.05 in Rain Heavy Rain
5:16 PM 60.8 °F 57.2 °F 88% 29.38 in 4.0 mi SSE 12.7 mph - 0.10 in Rain Rain
5:27 PM 60.8 °F 59.0 °F 94% 29.40 in 6.0 mi South 16.1 mph - 0.13 in Rain Light Rain
5:51 PM 60.1 °F 59.0 °F 96% 29.38 in 10.0 mi SSE 17.3 mph 21.9 mph 0.14 in Rain Light Rain
6:18 PM 60.8 °F 59.0 °F 94% 29.38 in 5.0 mi SSE 13.8 mph - 0.00 in Rain Light Rain
6:51 PM 60.1 °F 59.0 °F 96% 29.36 in 5.0 mi SSE 18.4 mph - 0.00 in Rain Light Rain
7:00 PM 60.8 °F 59.0 °F 94% 29.36 in 4.0 mi SSE 17.3 mph 25.3 mph 0.01 in Rain Light Rain
7:11 PM 60.8 °F 59.0 °F 94% 29.35 in 3.0 mi SSE 17.3 mph - 0.02 in Rain Light Rain
7:51 PM 59.0 °F 57.9 °F 96% 29.32 in 3.0 mi SSE 18.4 mph - 0.05 in Rain Light Rain
8:20 PM 59.0 °F 57.2 °F 94% 29.29 in 6.0 mi SE 21.9 mph 28.8 mph 0.04 in Rain Light Rain
8:32 PM 59.0 °F 57.2 °F 94% 29.28 in 10.0 mi SE 19.6 mph - 0.05 in   Overcast
8:51 PM 59.0 °F 55.9 °F 90% 29.26 in 9.0 mi SE 19.6 mph - 0.05 in Rain Light Rain
9:51 PM 59.0 °F 55.9 °F 90% 29.25 in 5.0 mi SSE 25.3 mph 35.7 mph 0.11 in   Overcast
10:03 PM 57.2 °F 55.4 °F 94% 29.28 in 4.0 mi SSW 27.6 mph 34.5 mph 0.08 in Rain Rain
10:16 PM 55.4 °F 53.6 °F 94% 29.29 in 8.0 mi WNW 21.9 mph 34.5 mph 0.09 in Rain Light Rain
10:32 PM 55.4 °F 51.8 °F 88% 29.30 in 9.0 mi West 18.4 mph - 0.09 in Rain Light Rain
10:51 PM 55.0 °F 52.0 °F 89% 29.31 in 10.0 mi WNW 12.7 mph - 0.09 in Rain Light Rain
11:51 PM 54.0 °F 51.1 °F 90% 29.33 in 10.0 mi WSW 15.0 mph - 0.00 in   Overcast