Weather History for Mackinac Island, MI

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Week of September 16, 2012 through September 22, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 70 °F 58 °F 52 °F
Mean Temperature 61 °F 52 °F 46 °F
Min Temperature 52 °F 45 °F 36 °F
Degree Days  
Heating Degree Days (base 65) 20 14 4 95
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 11 3 0 20
Dew Point  
Dew Point 58 °F 45 °F 31 °F
Precipitation  
Precipitation 0.68 in 0.25 in 0.00 in 1.76 in
Snowdepth - - - -
Wind  
Wind 26 mph 10 mph 0 mph
Gust Wind 40 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.11 in 29.82 in 29.64 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Sep. 22, 2012 Rise Set
Actual Time 7:26 AM EDT 7:35 PM EDT
Civil Twilight 6:56 AM EDT 8:04 PM EDT
Nautical Twilight 6:21 AM EDT 8:39 PM EDT
Astronomical Twilight 5:45 AM EDT 9:15 PM EDT
Moon 3:02 PM EDT (9/22) No Moon Set
Length of Visible Light 13h 08m
Length of Day
12h 09m
Waxing Crescent, 48% of the Moon is Illuminated
Sep 22
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 70 61 52 56 50 42 89 65 40 30.11 29.96 29.88 10 10 10 20 11 30 0.00  
17 64 56 49 58 52 46 94 79 51 29.88 29.79 29.72 10 9 1 20 9 28 0.68 Rain
18 52 48 43 47 41 32 94 77 58 29.89 29.77 29.71 10 10 5 16 9 24 0.20 Rain
19 55 46 36 45 38 31 93 71 45 29.98 29.90 29.71 10 10 10 20 8 34 0.03 Rain
20 56 53 49 51 47 43 92 79 64 29.80 29.72 29.64 10 10 7 26 15 40 0.19 Rain
21 57 50 42 48 44 41 96 83 56 29.81 29.77 29.73 10 10 4 20 7 25 0.62 Rain
22 53 48 43 46 40 32 95 77 47 29.97 29.80 29.69 10 10 5 20 9 30 0.04 Rain