Weather History for Ann Arbor, MI

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Week of January 15, 2012 through January 21, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 51 °F 30 °F 16 °F
Mean Temperature 38 °F 22 °F 8 °F
Min Temperature 26 °F 12 °F 0 °F
Degree Days  
Heating Degree Days (base 65) 57 44 26 306
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 52 °F 20 °F 1 °F
Precipitation  
Precipitation 1.09 in 0.18 in 0.00 in 1.24 in
Snowdepth - - - -
Wind  
Wind 39 mph 7 mph 0 mph
Gust Wind 48 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.47 in 30.05 in 29.35 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Jan. 21, 2012 Rise Set
Actual Time 7:58 AM EST 5:34 PM EST
Civil Twilight 7:27 AM EST 6:05 PM EST
Nautical Twilight 6:53 AM EST 6:39 PM EST
Astronomical Twilight 6:19 AM EST 7:12 PM EST
Moon 6:28 AM EST (1/21) 4:08 PM EST (1/21)
Length of Visible Light 10h 37m
Length of Day
9h 36m
Waning Crescent, 3% of the Moon is Illuminated
Jan 21
Waning Crescent
Jan 23
New
Jan 30
First Quarter
Feb 7
Full
Feb 14
Last Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
15 24 20 15 18 14 9 86 79 68 30.47 30.39 30.25 10 10 8 10 5 16 0.00  
16 41 30 19 41 29 14 100 85 68 30.30 29.96 29.79 10 8 1 13 7 20 0.03 Rain
17 51 38 26 52 42 18 100 96 69 30.02 29.62 29.35 10 4 0 39 8 48 1.09 Fog , Rain , Snow
18 25 22 18 18 14 10 85 71 59 30.28 30.16 30.02 10 10 7 16 10 24 0.00 Snow
19 28 17 1 27 17 1 100 82 57 30.18 29.85 29.73 10 6 1 22 13 29 0.00 Snow
20 16 8 0 13 11 3 100 85 74 30.32 30.20 30.06 10 6 1 10 3 - 0.12 Snow
21 25 16 6 23 11 3 96 86 78 30.33 30.19 30.05 10 9 2 13 6 - 0.00 Snow