Weather History for Pontiac, MI

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 38 °F 25 °F
Mean Temperature 46 °F 33 °F 20 °F
Min Temperature 42 °F 27 °F 14 °F
Degree Days  
Heating Degree Days (base 65) 45 32 19 1006
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 54 °F 27 °F 7 °F
Precipitation  
Precipitation 0.55 in 0.06 in 0.00 in 1.81 in
Snowdepth 2.0 in 1.3 in 1.0 in -
Wind  
Wind 30 mph 8 mph 0 mph
Gust Wind 47 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.52 in 30.09 in 29.39 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 30, 2011 Rise Set
Actual Time 8:03 AM EST 5:08 PM EST
Civil Twilight 7:31 AM EST 5:40 PM EST
Nautical Twilight 6:55 AM EST 6:16 PM EST
Astronomical Twilight 6:21 AM EST 6:50 PM EST
Moon 11:13 AM EST (12/30) 11:52 PM EST (12/30)
Length of Visible Light 10h 09m
Length of Day
9h 05m
Waxing Crescent, 35% of the Moon is Illuminated
Dec 30
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New

Weather History Calendar

Precipitation Actual month total 1.81 Average Month Total: 1.26
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
41 | 26 0.00
Average:
39 | 27 0.05
Snow
Actual:
34 | 27 0.04
Average:
39 | 27 0.05
Partly Cloudy
Actual:
46 | 30 0.00
Average:
39 | 27 0.05
Rain
Actual:
50 | 42 0.31
Average:
38 | 26 0.05
Snow
Actual:
41 | 30 0.07
Average:
38 | 26 0.05
Snow
Actual:
34 | 30 0.00
Average:
37 | 26 0.05
Snow
Actual:
35 | 24 0.00
Average:
37 | 25 0.05
Partly Cloudy
Actual:
37 | 24 0.00
Average:
37 | 25 0.05
Snow
Actual:
30 | 18 0.02
Average:
36 | 25 0.05
Scattered Clouds
Actual:
26 | 14 0.00
Average:
36 | 24 0.05
Clear
Actual:
35 | 17 0.00
Average:
35 | 24 0.05
Scattered Clouds
Actual:
41 | 23 0.00
Average:
35 | 23 0.05
Mostly Cloudy
Actual:
43 | 26 0.00
Average:
34 | 23 0.05
Rain
Actual:
53 | 35 0.55
Average:
34 | 22 0.04
Snow
Actual:
55 | 33 0.12
Average:
33 | 21 0.04
Partly Cloudy
Actual:
32 | 28 0.00
Average:
32 | 21 0.04
Snow
Actual:
28 | 26 0.00
Average:
32 | 20 0.04
Snow
Actual:
35 | 28 0.00
Average:
31 | 19 0.04
Rain
Actual:
48 | 32 0.00
Average:
30 | 18 0.04
Rain
Actual:
35 | 28 0.00
Average:
30 | 18 0.04
Rain
Actual:
43 | 35 0.18
Average:
29 | 18 0.03
Snow
Actual:
39 | 32 0.08
Average:
29 | 17 0.03
Snow
Actual:
30 | 21 0.00
Average:
29 | 17 0.03
Snow
Actual:
33 | 17 0.00
Average:
29 | 17 0.03
Partly Cloudy
Actual:
39 | 28 0.00
Average:
29 | 17 0.03
Partly Cloudy
Actual:
43 | 32 0.00
Average:
29 | 17 0.03
Snow
Actual:
36 | 26 0.15
Average:
29 | 17 0.03
Snow
Actual:
25 | 16 0.00
Average:
29 | 17 0.03
Snow
Actual:
36 | 23 0.02
Average:
29 | 17 0.03
Rain
Actual:
42 | 33 0.27
Average:
29 | 17 0.03
Fog
Actual:
37 | 35 0.00
Average:
29 | 17 0.03
 

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

2011 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 41 34 26 27 24 18 93 73 42 30.30 30.24 30.15 10 10 10 12 3 - 0.00  
2 34 30 27 32 28 23 100 85 66 30.52 30.35 30.20 10 6 1 14 7 20 0.04 Snow
3 46 38 30 36 32 27 93 80 65 30.49 30.36 30.15 10 9 4 13 8 20 0.00  
4 50 46 42 47 42 33 97 88 63 30.19 30.06 30.00 10 8 2 15 11 24 0.31 Rain
5 41 36 30 39 33 27 96 90 75 30.27 30.21 30.16 10 8 1 16 7 20 0.07 Rain , Snow
6 34 32 30 30 28 26 93 86 79 30.23 30.16 30.05 10 10 6 15 10 22 0.00 Snow
7 35 30 24 27 22 16 89 72 50 30.09 29.98 29.89 10 10 7 18 7 29 0.00 Snow
8 37 30 24 25 21 18 84 71 46 30.18 30.12 29.98 10 10 8 14 10 21 0.00  
9 30 24 18 29 23 12 96 85 60 30.35 30.17 30.11 10 5 1 15 8 17 0.02 Snow
10 26 20 14 13 11 7 88 71 53 30.48 30.43 30.32 10 10 9 13 5 - 0.00  
11 35 26 17 22 16 8 74 66 57 30.51 30.46 30.41 10 10 10 16 8 20 0.00  
12 41 32 23 27 21 17 81 69 53 30.47 30.43 30.38 10 10 8 7 3 - 0.00  
13 43 34 26 31 26 22 86 72 45 30.45 30.40 30.33 10 8 6 6 1 - 0.00  
14 53 44 35 50 39 30 100 95 75 30.34 30.10 29.78 8 3 1 17 6 29 0.55 Rain
15 55 44 33 54 44 23 100 84 63 30.01 29.69 29.58 10 9 2 29 16 47 0.12 Rain , Snow
16 32 30 28 23 20 18 74 67 59 30.30 30.24 30.06 10 10 10 21 14 31 0.00  
17 28 27 26 27 22 17 93 80 66 30.31 30.23 30.12 10 8 3 9 6 - 0.00 Snow
18 35 32 28 29 26 22 93 80 69 30.21 30.12 29.96 10 8 4 12 7 20 0.00 Snow
19 48 40 32 38 32 23 93 75 63 30.18 29.96 29.83 10 9 4 18 12 28 0.00 Rain
20 35 32 28 36 27 19 100 81 64 30.21 30.05 29.85 10 8 0 12 7 - 0.00 Fog , Rain
21 43 39 35 43 39 36 100 98 93 29.91 29.71 29.54 10 4 0 17 5 - 0.18 Fog , Rain
22 39 36 32 39 36 30 100 91 75 30.10 30.02 29.90 10 6 2 15 5 20 0.08 Rain , Snow
23 30 26 21 28 19 12 93 74 55 30.34 30.22 30.09 10 8 1 18 11 24 0.00 Snow
24 33 25 17 27 23 18 100 84 65 30.38 30.27 30.14 10 7 2 13 4 22 0.00 Snow
25 39 34 28 29 27 25 93 74 60 30.19 30.02 29.89 10 10 10 24 12 33 0.00  
26 43 38 32 29 26 23 76 66 53 30.30 30.17 29.92 10 10 10 14 9 24 0.00  
27 36 32 26 32 30 22 100 90 73 29.91 29.56 29.39 10 4 1 26 7 36 0.15 Rain , Snow
28 25 20 16 20 12 8 81 69 53 30.03 29.94 29.69 10 10 9 30 16 39 0.00 Snow
29 36 29 23 34 28 14 100 89 68 29.96 29.71 29.57 10 4 1 10 7 18 0.02 Snow
30 42 38 33 43 36 30 100 95 79 29.78 29.62 29.54 9 3 0 10 5 - 0.27 Fog , Rain
31 37 36 35 37 34 32 100 93 81 30.02 29.86 29.60 10 5 0 13 9 21 0.00 Fog