Weather History for Ann Arbor, MI

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 93 °F 74 °F 61 °F
Mean Temperature 78 °F 61 °F 49 °F
Min Temperature 68 °F 48 °F 32 °F
Degree Days  
Heating Degree Days (base 65) 16 6 0 184
Cooling Degree Days (base 65) 12 2 0 53
Growing Degree Days (base 50) 28 11 0 324
Dew Point  
Dew Point 73 °F 52 °F 30 °F
Precipitation  
Precipitation 0.74 in 0.05 in 0.00 in 1.47 in
Snowdepth - - - -
Wind  
Wind 22 mph 4 mph 0 mph
Gust Wind 132 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.42 in 30.04 in 29.69 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 10, 2013 Rise Set
Actual Time 7:09 AM EDT 7:52 PM EDT
Civil Twilight 6:41 AM EDT 8:21 PM EDT
Nautical Twilight 6:08 AM EDT 8:54 PM EDT
Astronomical Twilight 5:33 AM EDT 9:29 PM EDT
Moon 12:41 PM EDT (9/10) 10:48 PM EDT (9/10)
Length of Visible Light 13h 39m
Length of Day
12h 42m
Waxing Crescent, 28% of the Moon is Illuminated
Sep 10
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Weather History Calendar

Precipitation Actual month total 1.47 Average Month Total: 1.88
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
82 | 68 0.04
Average:
77 | 53 0.05
Partly Cloudy
Actual:
78 | 61 0.00
Average:
77 | 52 0.05
Partly Cloudy
Actual:
75 | 55 0.00
Average:
77 | 52 0.05
Fog
Actual:
81 | 44 0.00
Average:
77 | 52 0.05
Scattered Clouds
Actual:
72 | 55 0.00
Average:
77 | 52 0.05
Fog
Actual:
73 | 39 0.00
Average:
76 | 51 0.05
Fog
Actual:
84 | 48 0.02
Average:
76 | 51 0.05
Partly Cloudy
Actual:
75 | 57 0.00
Average:
76 | 50 0.05
Thunderstorm
Actual:
78 | 48 0.33
Average:
75 | 50 0.06
Fog
Actual:
93 | 64 0.00
Average:
75 | 49 0.06
Thunderstorm
Actual:
90 | 64 0.10
Average:
74 | 48 0.06
Fog
Actual:
80 | 57 0.00
Average:
74 | 48 0.06
Partly Cloudy
Actual:
62 | 37 0.00
Average:
73 | 47 0.06
Fog
Actual:
68 | 32 0.00
Average:
73 | 47 0.06
Rain
Actual:
66 | 37 0.05
Average:
72 | 46 0.07
Partly Cloudy
Actual:
64 | 46 0.00
Average:
72 | 46 0.07
Fog
Actual:
68 | 32 0.00
Average:
71 | 45 0.07
Clear
Actual:
73 | 42 0.00
Average:
70 | 45 0.07
Fog
Actual:
81 | 51 0.00
Average:
70 | 44 0.07
Thunderstorm
Actual:
81 | 64 0.74
Average:
69 | 43 0.07
Rain
Actual:
69 | 57 0.03
Average:
68 | 43 0.07
Partly Cloudy
Actual:
61 | 39 0.00
Average:
68 | 42 0.07
Fog
Actual:
62 | 39 0.00
Average:
67 | 42 0.07
Fog
Actual:
66 | 37 0.00
Average:
67 | 41 0.07
Clear
Actual:
72 | 43 0.00
Average:
67 | 41 0.07
Fog
Actual:
75 | 39 0.00
Average:
66 | 40 0.07
Fog
Actual:
75 | 39 0.00
Average:
66 | 40 0.07
Fog
Actual:
77 | 44 0.01
Average:
65 | 39 0.07
Rain
Actual:
64 | 51 0.14
Average:
64 | 38 0.07
Fog
Actual:
71 | 48 0.01
Average:
64 | 38 0.07
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2013 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  
1 82 74 68 72 68 64 94 84 69 29.86 29.78 29.72 10 8 4 8 5 - 0.04 Rain
2 78 70 61 68 61 49 100 77 50 29.92 29.81 29.73 10 9 1 15 6 22 0.00  
3 75 64 55 56 52 49 96 68 46 30.03 29.98 29.92 10 10 10 15 9 21 0.00  
4 81 62 44 60 52 43 100 84 47 30.09 30.06 30.03 10 6 0 15 5 21 0.00 Fog
5 72 63 55 61 51 43 90 69 38 30.27 30.19 30.09 10 10 10 12 7 - 0.00  
6 73 56 39 54 45 39 100 80 41 30.29 30.24 30.09 10 6 0 8 1 - 0.00 Fog
7 84 65 48 69 57 48 100 86 56 30.09 30.01 29.91 10 8 0 12 2 - 0.02 Fog
8 75 68 57 66 60 48 88 72 49 30.09 30.03 29.93 10 10 8 13 8 18 0.00  
9 78 63 48 70 61 46 100 91 76 30.08 30.00 29.91 10 6 0 9 1 - 0.33 Fog , Rain , Thunderstorm
10 93 78 64 73 68 63 100 80 42 30.02 29.96 29.91 10 6 0 15 4 22 0.00 Fog
11 90 77 64 72 68 63 100 77 52 30.04 29.99 29.92 10 8 1 22 6 39 0.10 Rain , Thunderstorm
12 80 68 57 67 61 47 100 82 40 29.97 29.92 29.85 10 7 0 17 6 26 0.00 Fog
13 62 49 37 47 43 36 96 68 51 30.15 30.06 29.97 10 10 9 16 10 22 0.00  
14 68 49 32 46 36 30 100 85 33 30.20 30.15 30.11 10 5 0 7 1 - 0.00 Fog
15 66 50 37 54 43 37 100 91 56 30.14 30.10 30.07 10 5 0 12 1 - 0.05 Rain
16 64 56 46 54 50 41 100 81 48 30.38 30.25 30.13 10 9 2 13 5 18 0.00  
17 68 49 32 50 38 30 100 83 38 30.42 30.37 30.24 10 6 0 10 2 - 0.00 Fog
18 73 58 42 57 50 41 100 78 42 30.22 30.14 30.05 10 9 2 8 1 - 0.00  
19 81 66 51 66 57 50 100 92 62 30.06 30.03 29.93 10 3 0 10 1 - 0.00 Fog
20 81 73 64 70 67 63 97 88 64 29.93 29.83 29.74 10 5 1 16 8 22 0.74 Rain , Thunderstorm
21 69 62 57 64 54 46 100 76 45 29.88 29.75 29.69 10 9 5 18 7 24 0.03 Rain
22 61 53 39 43 40 38 96 64 49 30.10 30.00 29.89 10 10 10 13 8 16 0.00  
23 62 50 39 45 41 37 100 79 48 30.20 30.15 30.10 10 8 0 8 3 - 0.00 Fog
24 66 52 37 51 42 36 100 88 50 30.17 30.10 30.00 10 5 0 8 1 - 0.00 Fog
25 72 56 43 54 47 42 100 81 52 30.02 29.99 29.96 10 8 1 8 3 - 0.00  
26 75 57 39 52 44 39 100 85 37 30.15 30.06 30.01 10 5 0 8 1 - 0.00 Fog
27 75 56 39 58 47 39 100 88 52 30.25 30.19 30.15 10 5 0 10 1 37 0.00 Fog
28 77 60 44 61 51 45 100 88 42 30.21 30.16 30.02 10 4 0 10 2 20 0.01 Fog
29 64 58 51 63 57 50 100 92 83 30.03 29.99 29.97 10 5 0 10 3 - 0.14 Fog , Rain
30 71 59 48 58 54 46 100 88 49 30.02 29.98 29.93 10 6 0 10 2 132 0.01 Fog