Weather History for Ann Arbor, MI

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 22 °F -  
Max Temperature 34 °F 30 °F 57 °F (2004)
Min Temperature 10 °F 15 °F 7 °F (2008)
Degree Days  
Heating Degree Days 43    
Moisture  
Dew Point 21 °F    
Average Humidity 76    
Maximum Humidity 92    
Minimum Humidity 63    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 9 mph (WSW)    
Max Wind Speed 20 mph    
Max Gust Speed 24 mph    
Visibility 9 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 8:03 AM EST 5:12 PM EST
Civil Twilight 7:31 AM EST 5:44 PM EST
Nautical Twilight 6:56 AM EST 6:19 PM EST
Astronomical Twilight 6:22 AM EST 6:54 PM EST
Moon 8:46 PM EST (12/31) 9:41 AM EST (12/31)
Length of Visible Light 10h 12m
Length of Day
9h 09m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 10.0 °F 3.6 °F 8.1 °F 92% 30.19 in 4.0 mi SSW 3.5 mph - N/A   Clear
1:53 AM 14.0 °F 6.5 °F 9.0 °F 80% 30.18 in 6.0 mi WSW 4.6 mph - N/A   Haze
2:53 AM 19.9 °F 11.1 °F 16.0 °F 85% 30.15 in 7.0 mi SW 6.9 mph - N/A   Clear
3:53 AM 21.9 °F 11.7 °F 17.1 °F 82% 30.12 in 8.0 mi SSW 9.2 mph - N/A   Clear
4:53 AM 24.1 °F 13.1 °F 18.0 °F 77% 30.09 in 9.0 mi SW 11.5 mph - N/A   Clear
5:53 AM 25.0 °F 13.6 °F 18.0 °F 75% 30.07 in 10.0 mi SW 12.7 mph - N/A   Clear
6:53 AM 24.1 °F 14.4 °F 19.0 °F 81% 30.07 in 9.0 mi SW 9.2 mph - N/A   Clear
7:53 AM 25.0 °F 15.5 °F 19.9 °F 81% 30.05 in 9.0 mi SW 9.2 mph - N/A   Clear
8:53 AM 26.1 °F 17.6 °F 19.9 °F 78% 30.04 in 7.0 mi SW 8.1 mph - N/A   Clear
9:53 AM 28.0 °F 18.6 °F 21.0 °F 75% 30.04 in 8.0 mi SW 10.4 mph - N/A   Clear
10:53 AM 28.9 °F 18.6 °F 21.9 °F 75% 30.04 in 9.0 mi SW 12.7 mph - N/A   Clear
11:53 AM 30.9 °F 21.7 °F 21.9 °F 69% 30.01 in 10.0 mi SW 11.5 mph - N/A   Clear
12:11 PM 30.2 °F 21.3 °F 23.0 °F 75% 29.97 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
12:53 PM 32.0 °F 23.0 °F 23.0 °F 69% 29.97 in 10.0 mi SW 11.5 mph - N/A   Overcast
1:53 PM 34.0 °F 22.7 °F 25.0 °F 70% 29.96 in 10.0 mi WSW 19.6 mph 24.2 mph N/A   Overcast
2:53 PM 34.0 °F 25.0 °F 26.1 °F 73% 29.95 in 10.0 mi West 12.7 mph - N/A   Overcast
3:53 PM 34.0 °F 26.0 °F 26.1 °F 73% 29.98 in 10.0 mi WSW 10.4 mph - N/A   Overcast
4:53 PM 34.0 °F 25.5 °F 26.1 °F 73% 29.96 in 10.0 mi WSW 11.5 mph - N/A   Overcast
5:53 PM 34.0 °F 25.5 °F 27.0 °F 75% 29.97 in 10.0 mi WSW 11.5 mph - N/A   Overcast
6:53 PM 34.0 °F 25.5 °F 27.0 °F 75% 29.97 in 10.0 mi West 11.5 mph - N/A   Overcast
7:53 PM 34.0 °F 26.6 °F 27.0 °F 75% 30.00 in 10.0 mi WNW 9.2 mph - N/A   Overcast
8:24 PM 32.0 °F 23.0 °F 26.6 °F 80% 29.97 in 6.0 mi NW 11.5 mph 19.6 mph N/A   Haze
8:53 PM 30.9 °F 21.2 °F 26.1 °F 82% 30.01 in 6.0 mi NW 12.7 mph 18.4 mph N/A   Haze
11:03 PM 28.4 °F 18.5 °F 19.4 °F 69% 30.01 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
11:53 PM 28.0 °F 19.3 °F 17.1 °F 63% 30.04 in 10.0 mi WNW 9.2 mph - N/A   Overcast