Weather History for Ann Arbor, MI

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Month of May, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 93 °F 76 °F 62 °F
Mean Temperature 75 °F 62 °F 52 °F
Min Temperature 66 °F 49 °F 35 °F
Degree Days  
Heating Degree Days (base 65) 13 5 0 140
Cooling Degree Days (base 65) 10 2 0 55
Growing Degree Days (base 50) 25 12 2 374
Dew Point  
Dew Point 67 °F 49 °F 30 °F
Precipitation  
Precipitation 0.36 in 0.04 in 0.00 in 1.21 in
Snowdepth - - - -
Wind  
Wind 21 mph 5 mph 0 mph
Gust Wind 32 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.29 in 29.99 in 29.70 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 12, 2012 Rise Set
Actual Time 6:16 AM EDT 8:46 PM EDT
Civil Twilight 5:44 AM EDT 9:18 PM EDT
Nautical Twilight 5:05 AM EDT 9:58 PM EDT
Astronomical Twilight 4:20 AM EDT 10:43 PM EDT
Moon 1:58 AM EDT (5/12) 12:56 PM EDT (5/12)
Length of Visible Light 15h 33m
Length of Day
14h 30m
Waning Gibbous, 53% of the Moon is Illuminated
May 12
Waning Gibbous
May 12
Last Quarter
May 20
New
May 28
First Quarter
Jun 4
Full

Weather History Calendar

Precipitation Actual month total 1.21 Average Month Total: 2.89
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
62 | 50 0.03
Average:
65 | 39 0.08
Partly Cloudy
Actual:
82 | 51 0.00
Average:
65 | 40 0.08
Rain
Actual:
88 | 57 0.10
Average:
66 | 41 0.08
Rain
Actual:
80 | 61 0.07
Average:
66 | 41 0.08
Partly Cloudy
Actual:
71 | 55 0.00
Average:
66 | 42 0.09
Scattered Clouds
Actual:
70 | 52 0.00
Average:
66 | 42 0.09
Rain
Actual:
64 | 51 0.36
Average:
66 | 43 0.09
Partly Cloudy
Actual:
73 | 48 0.00
Average:
66 | 43 0.10
Rain
Actual:
66 | 43 0.10
Average:
66 | 43 0.10
Clear
Actual:
64 | 41 0.00
Average:
66 | 43 0.10
Clear
Actual:
73 | 37 0.00
Average:
66 | 44 0.10
Partly Cloudy
Actual:
73 | 43 0.00
Average:
66 | 44 0.10
Rain
Actual:
69 | 50 0.09
Average:
66 | 44 0.10
Fog
Actual:
75 | 42 0.00
Average:
66 | 44 0.10
Clear
Actual:
82 | 41 0.00
Average:
66 | 44 0.10
Rain
Actual:
66 | 45 0.01
Average:
66 | 44 0.10
Clear
Actual:
69 | 35 0.00
Average:
65 | 44 0.10
Fog
Actual:
75 | 35 0.00
Average:
65 | 43 0.10
Clear
Actual:
84 | 42 0.00
Average:
65 | 43 0.10
Clear
Actual:
87 | 48 0.00
Average:
65 | 43 0.10
Rain
Actual:
77 | 54 0.02
Average:
65 | 43 0.10
Partly Cloudy
Actual:
71 | 50 0.00
Average:
65 | 43 0.10
Fog
Actual:
79 | 41 0.00
Average:
65 | 43 0.10
Fog
Actual:
84 | 51 0.00
Average:
66 | 43 0.09
Scattered Clouds
Actual:
88 | 61 0.00
Average:
66 | 44 0.09
Thunderstorm
Actual:
73 | 59 0.31
Average:
66 | 44 0.09
Scattered Clouds
Actual:
82 | 60 0.00
Average:
66 | 44 0.09
Thunderstorm
Actual:
93 | 59 0.00
Average:
67 | 45 0.09
Thunderstorm
Actual:
84 | 66 0.00
Average:
67 | 45 0.09
Scattered Clouds
Actual:
75 | 48 0.00
Average:
67 | 45 0.08
Rain
Actual:
63 | 48 0.12
Average:
68 | 46 0.08
 

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

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 62 56 50 52 49 46 100 86 67 30.08 30.01 29.91 10 4 1 9 5 - 0.03 Rain
2 82 66 51 66 56 48 94 80 51 29.98 29.92 29.84 10 7 2 21 6 32 0.00  
3 88 72 57 67 60 55 96 71 39 29.99 29.94 29.85 10 10 4 21 5 32 0.10 Rain
4 80 70 61 63 61 57 97 80 50 30.01 29.95 29.91 10 10 10 12 4 - 0.07 Rain
5 71 63 55 54 52 49 83 75 53 30.11 30.03 29.96 10 10 10 12 7 - 0.00  
6 70 61 52 49 41 35 83 51 32 30.12 30.07 30.00 10 10 10 10 4 - 0.00  
7 64 58 51 58 51 36 90 81 42 29.99 29.87 29.80 10 6 4 8 5 - 0.36 Rain
8 73 60 48 59 50 41 94 70 42 29.84 29.80 29.77 10 10 10 13 6 21 0.00  
9 66 54 43 47 45 41 93 74 47 29.86 29.80 29.77 10 10 10 18 6 26 0.10 Rain
10 64 52 41 43 35 30 82 56 28 30.01 29.93 29.86 10 10 10 15 6 22 0.00  
11 73 55 37 42 38 33 86 51 26 30.16 30.12 30.03 10 10 10 14 5 21 0.00  
12 73 56 43 58 50 40 90 70 50 30.22 30.19 30.16 10 10 5 13 3 - 0.00  
13 69 59 50 58 51 45 94 78 52 30.25 30.19 30.11 10 7 2 12 3 - 0.09 Rain
14 75 58 42 53 45 37 100 77 25 30.12 30.07 29.99 10 6 0 10 1 - 0.00 Fog
15 82 61 41 50 44 40 96 58 26 30.01 29.93 29.83 10 10 10 16 4 21 0.00  
16 66 56 45 54 41 32 82 54 31 30.12 29.99 29.87 10 10 10 20 9 25 0.01 Rain
17 69 52 35 44 38 33 93 60 31 30.24 30.18 30.14 10 10 8 9 3 - 0.00  
18 75 55 35 47 40 33 100 71 22 30.18 30.13 30.08 10 7 0 12 1 - 0.00 Fog
19 84 63 42 53 46 42 100 64 25 30.16 30.12 30.09 10 8 1 9 1 - 0.00  
20 87 67 48 57 51 46 100 63 31 30.16 30.11 30.00 10 8 1 13 3 20 0.00  
21 77 64 54 61 56 49 86 71 57 30.02 30.00 29.98 10 10 10 14 5 21 0.02 Rain
22 71 62 50 52 49 46 86 66 47 30.02 29.98 29.91 10 10 10 14 9 20 0.00  
23 79 59 41 55 47 39 94 74 36 29.96 29.92 29.86 10 7 0 10 1 - 0.00 Fog
24 84 68 51 61 55 48 100 76 46 29.93 29.87 29.77 10 6 0 15 2 23 0.00 Fog
25 88 75 61 63 55 45 70 50 26 30.09 29.93 29.83 10 10 9 17 9 24 0.00  
26 73 66 59 58 53 47 90 66 47 30.29 30.19 30.10 10 9 1 12 6 32 0.31 Rain , Thunderstorm
27 82 71 60 62 58 52 83 65 50 30.14 30.05 29.94 10 10 10 20 5 28 0.00  
28 93 75 59 67 60 57 97 70 34 29.93 29.86 29.73 10 6 0 16 3 24 0.00 Fog , Thunderstorm
29 84 74 66 65 55 41 90 52 23 29.80 29.75 29.70 10 9 4 18 8 23 0.00 Thunderstorm
30 75 60 48 48 45 42 89 51 33 29.91 29.84 29.81 10 10 2 15 8 24 0.00  
31 63 56 48 48 46 44 90 68 55 30.01 29.95 29.86 10 10 6 10 6 20 0.12 Rain