Weather History for Ann Arbor, MI

Change the Weather History Date:

Week of September 16, 2012 through September 22, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 77 °F 68 °F 57 °F
Mean Temperature 58 °F 54 °F 48 °F
Min Temperature 46 °F 40 °F 30 °F
Degree Days  
Heating Degree Days (base 65) 17 11 6 74
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 5 0 32
Dew Point  
Dew Point 63 °F 44 °F 30 °F
Precipitation  
Precipitation 0.15 in 0.05 in 0.00 in 0.37 in
Snowdepth - - - -
Wind  
Wind 17 mph 4 mph 0 mph
Gust Wind 81 mph 30 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.17 in 29.93 in 29.61 in

Weekly Weather History Graph

Weekly 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

Sep. 21, 2012 Rise Set
Actual Time 7:21 AM EDT 7:33 PM EDT
Civil Twilight 6:53 AM EDT 8:01 PM EDT
Nautical Twilight 6:20 AM EDT 8:33 PM EDT
Astronomical Twilight 5:47 AM EDT 9:07 PM EDT
Moon 1:49 PM EDT (9/21) 11:26 PM EDT (9/21)
Length of Visible Light 13h 07m
Length of Day
12h 11m
Waxing Crescent, 37% of the Moon is Illuminated
Sep 21
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
16 77 58 41 51 45 39 100 82 36 30.17 30.12 30.03 10 5 0 13 1 81 0.00 Fog
17 75 58 42 61 47 39 100 83 41 30.04 29.95 29.71 10 5 0 12 1 29 0.00 Fog , Rain
18 64 54 45 63 50 34 94 74 47 29.98 29.72 29.61 10 9 5 17 8 25 0.03 Rain
19 66 48 30 42 35 30 100 63 30 30.12 30.05 29.99 10 9 1 15 5 48 0.00  
20 69 58 46 54 44 37 89 63 45 29.99 29.91 29.84 10 10 10 15 9 23 0.04 Thunderstorm
21 71 54 37 50 41 35 100 79 28 29.94 29.90 29.79 10 7 1 15 2 23 0.15 Rain
22 57 48 37 50 45 36 96 84 64 30.09 29.87 29.73 10 8 2 15 5 23 0.15 Rain , Thunderstorm