Weather History for Mackinac Island, MI

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 59 °F 34 °F 19 °F
Mean Temperature 47 °F 29 °F 15 °F
Min Temperature 36 °F 25 °F 11 °F
Degree Days  
Heating Degree Days (base 65) 50 36 18 1108
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 56 °F 24 °F 8 °F
Precipitation  
Precipitation 0.42 in 0.04 in 0.00 in 1.26 in
Snowdepth - - - -
Wind  
Wind 31 mph 9 mph 0 mph
Gust Wind 43 mph 21 mph 9 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 29.95 in 29.33 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 09, 2012 Rise Set
Actual Time 8:08 AM EST 4:53 PM EST
Civil Twilight 7:34 AM EST 5:27 PM EST
Nautical Twilight 6:56 AM EST 6:05 PM EST
Astronomical Twilight 6:20 AM EST 6:41 PM EST
Moon 3:30 AM EST (12/9) 2:08 PM EST (12/9)
Length of Visible Light 9h 53m
Length of Day
8h 45m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.26 Average Month Total: 3.32
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Snow
Actual:
38 | 30 0.10
Average:
35 | 27 0.13
Rain
Actual:
45 | 36 0.01
Average:
35 | 27 0.12
Rain
Actual:
59 | 35 0.17
Average:
34 | 26 0.11
Snow
Actual:
55 | 27 0.00
Average:
34 | 26 0.11
Snow
Actual:
30 | 22 0.00
Average:
34 | 26 0.11
Snow
Actual:
38 | 28 0.00
Average:
34 | 26 0.11
Overcast
Actual:
39 | 31 0.00
Average:
34 | 26 0.11
Snow
Actual:
32 | 27 0.00
Average:
34 | 25 0.10
Snow
Actual:
30 | 21 0.04
Average:
33 | 25 0.11
Snow
Actual:
24 | 16 0.00
Average:
33 | 25 0.11
Snow
Actual:
31 | 14 0.01
Average:
33 | 25 0.11
Snow
Actual:
36 | 21 0.11
Average:
32 | 24 0.11
Partly Cloudy
Actual:
41 | 34 0.00
Average:
32 | 24 0.11
Mostly Cloudy
Actual:
33 | 28 0.00
Average:
31 | 23 0.11
Snow
Actual:
38 | 32 0.31
Average:
30 | 22 0.11
Snow
Actual:
39 | 35 0.06
Average:
30 | 22 0.10
Fog
Actual:
39 | 32 0.00
Average:
29 | 21 0.10
Overcast
Actual:
36 | 30 0.00
Average:
28 | 20 0.10
Partly Cloudy
Actual:
36 | 28 0.00
Average:
28 | 19 0.10
Snow
Actual:
37 | 28 0.42
Average:
27 | 19 0.10
Snow
Actual:
28 | 23 0.03
Average:
27 | 18 0.10
Overcast
Actual:
29 | 23 0.00
Average:
27 | 18 0.10
Snow
Actual:
28 | 22 0.00
Average:
27 | 17 0.10
Snow
Actual:
27 | 22 0.00
Average:
27 | 17 0.10
Snow
Actual:
26 | 22 0.00
Average:
26 | 17 0.10
Partly Cloudy
Actual:
24 | 18 0.00
Average:
26 | 17 0.10
Scattered Clouds
Actual:
27 | 14 0.00
Average:
26 | 17 0.11
Partly Cloudy
Actual:
19 | 11 0.00
Average:
26 | 16 0.11
Mostly Cloudy
Actual:
23 | 15 0.00
Average:
26 | 16 0.11
Snow
Actual:
27 | 22 0.00
Average:
25 | 16 0.11
Snow
Actual:
32 | 17 0.00
Average:
25 | 16 0.11
 

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
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 38 34 30 36 32 28 96 91 86 30.30 30.08 29.81 10 7 1 16 10 25 0.10 Rain , Snow
2 45 40 36 44 38 34 97 94 86 30.08 29.90 29.76 10 4 0 15 7 22 0.01 Fog , Rain
3 59 47 35 56 42 34 96 91 82 30.08 29.89 29.60 10 7 2 21 8 33 0.17 Rain
4 55 41 27 52 32 16 95 76 56 30.10 29.87 29.63 10 9 3 25 15 36 0.00 Snow
5 30 26 22 24 19 16 85 72 60 30.40 30.30 30.11 10 10 2 21 11 26 0.00 Snow
6 38 33 28 32 24 20 85 72 63 30.26 30.00 29.80 10 10 5 16 11 26 0.00 Rain , Snow
7 39 35 31 35 26 21 86 71 62 30.00 29.92 29.79 10 10 10 12 7 20 0.00  
8 32 30 27 25 23 15 87 74 56 30.17 30.02 29.95 10 9 2 12 4 16 0.00 Snow
9 30 26 21 26 22 17 91 80 61 30.24 30.09 29.79 10 7 1 21 9 30 0.04 Snow
10 24 20 16 20 16 12 90 81 71 29.87 29.73 29.64 10 9 2 18 11 24 0.00 Snow
11 31 22 14 27 19 12 93 78 64 29.93 29.88 29.84 10 9 0 23 7 32 0.01 Snow
12 36 28 21 28 20 14 82 74 67 30.20 30.12 29.93 10 10 7 21 10 28 0.11 Snow
13 41 38 34 32 29 27 80 69 59 30.14 30.06 29.97 10 10 10 17 11 26 0.00  
14 33 30 28 30 24 21 87 78 72 30.24 30.18 30.05 10 10 10 14 7 20 0.00  
15 38 35 32 36 31 27 92 85 81 30.20 29.98 29.66 10 8 4 18 11 33 0.31 Rain , Snow
16 39 37 35 38 36 34 97 96 91 29.65 29.54 29.51 7 2 0 17 9 28 0.06 Fog , Rain , Snow
17 39 36 32 38 33 30 97 93 88 29.65 29.61 29.53 10 9 0 15 8 21 0.00 Fog
18 36 33 30 32 31 29 96 91 75 29.75 29.69 29.64 10 10 10 6 3 - 0.00  
19 36 32 28 31 28 25 96 86 67 30.08 29.95 29.75 10 10 10 7 4 - 0.00  
20 37 32 28 33 30 27 99 90 73 30.07 29.68 29.33 10 4 0 31 13 43 0.42 Snow
21 28 26 23 26 23 20 94 87 79 29.89 29.60 29.33 10 7 1 26 19 43 0.03 Snow
22 29 26 23 25 21 18 88 81 74 29.98 29.92 29.81 10 10 10 18 13 31 0.00  
23 28 25 22 24 19 15 87 77 68 29.97 29.89 29.78 10 10 5 18 12 28 0.00 Snow
24 27 24 22 23 19 17 90 79 69 30.05 29.96 29.93 10 9 1 14 7 21 0.00 Snow
25 26 24 22 20 18 14 82 75 66 30.39 30.25 30.05 10 10 10 13 7 18 0.00 Snow
26 24 21 18 18 14 10 78 73 68 30.37 30.24 30.12 10 10 10 15 8 24 0.00  
27 27 20 14 17 11 8 87 70 56 30.16 30.12 30.09 10 10 10 14 9 18 0.00  
28 19 15 11 14 13 8 91 84 75 30.12 30.07 29.99 10 10 10 7 4 - 0.00  
29 23 19 15 20 17 13 92 84 73 29.99 29.93 29.88 10 10 10 12 6 17 0.00  
30 27 24 22 24 20 16 88 78 67 30.12 30.05 29.95 10 10 7 16 8 24 0.00 Snow
31 32 24 17 28 18 10 87 75 57 30.00 29.86 29.77 10 10 5 22 13 29 0.00 Snow