Weather History for Pontiac, MI

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 87 °F 72 °F 55 °F
Mean Temperature 75 °F 62 °F 49 °F
Min Temperature 68 °F 52 °F 37 °F
Degree Days  
Heating Degree Days (base 65) 16 5 0 158
Cooling Degree Days (base 65) 10 2 0 61
Growing Degree Days (base 50) 25 12 0 357
Dew Point  
Dew Point 70 °F 50 °F 32 °F
Precipitation  
Precipitation 0.48 in 0.06 in 0.00 in 1.67 in
Snowdepth - - - -
Wind  
Wind 23 mph 5 mph 0 mph
Gust Wind 33 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.34 in 30.00 in 29.60 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 05, 2012 Rise Set
Actual Time 7:03 AM EDT 8:00 PM EDT
Civil Twilight 6:34 AM EDT 8:28 PM EDT
Nautical Twilight 6:00 AM EDT 9:03 PM EDT
Astronomical Twilight 5:24 AM EDT 9:38 PM EDT
Moon 10:20 PM EDT (9/5) 12:14 PM EDT (9/5)
Length of Visible Light 13h 54m
Length of Day
12h 56m
Waning Gibbous, 76% of the Moon is Illuminated
Sep 5
Waning Gibbous
Sep 8
Last Quarter
Sep 15
New
Sep 22
First Quarter
Sep 29
Full

Weather History Calendar

Precipitation Actual month total 1.67 Average Month Total: 1.94
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Mostly Cloudy
Actual:
84 | 64 0.00
Average:
76 | 56 0.05
Partly Cloudy
Actual:
82 | 66 0.00
Average:
76 | 56 0.05
Scattered Clouds
Actual:
87 | 63 0.00
Average:
76 | 56 0.05
Thunderstorm
Actual:
81 | 68 0.31
Average:
76 | 55 0.05
Fog
Actual:
78 | 62 0.02
Average:
75 | 55 0.05
Partly Cloudy
Actual:
82 | 64 0.00
Average:
75 | 55 0.06
Thunderstorm
Actual:
79 | 60 0.16
Average:
75 | 55 0.06
Rain
Actual:
71 | 55 0.48
Average:
74 | 54 0.06
Scattered Clouds
Actual:
70 | 50 0.00
Average:
74 | 54 0.06
Scattered Clouds
Actual:
71 | 48 0.00
Average:
73 | 54 0.06
Scattered Clouds
Actual:
79 | 50 0.00
Average:
73 | 53 0.06
Scattered Clouds
Actual:
82 | 55 0.00
Average:
73 | 53 0.07
Partly Cloudy
Actual:
82 | 57 0.00
Average:
73 | 52 0.07
Rain
Actual:
70 | 53 0.43
Average:
72 | 52 0.07
Scattered Clouds
Actual:
70 | 48 0.00
Average:
72 | 51 0.07
Partly Cloudy
Actual:
77 | 52 0.00
Average:
71 | 51 0.07
Rain
Actual:
75 | 53 0.08
Average:
71 | 50 0.07
Rain
Actual:
63 | 46 0.00
Average:
70 | 50 0.07
Partly Cloudy
Actual:
64 | 41 0.00
Average:
69 | 49 0.07
Thunderstorm
Actual:
68 | 51 0.00
Average:
69 | 48 0.07
Rain
Actual:
69 | 48 0.15
Average:
68 | 48 0.07
Rain
Actual:
57 | 45 0.03
Average:
68 | 48 0.07
Rain
Actual:
55 | 43 0.00
Average:
67 | 47 0.07
Partly Cloudy
Actual:
62 | 37 0.00
Average:
67 | 47 0.07
Partly Cloudy
Actual:
68 | 48 0.00
Average:
67 | 46 0.07
Fog
Actual:
68 | 51 0.01
Average:
66 | 46 0.07
Partly Cloudy
Actual:
66 | 46 0.00
Average:
66 | 45 0.07
Partly Cloudy
Actual:
68 | 48 0.00
Average:
65 | 45 0.07
Partly Cloudy
Actual:
70 | 45 0.00
Average:
64 | 44 0.07
Partly Cloudy
Actual:
63 | 46 0.00
Average:
64 | 44 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

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  
1 84 74 64 59 55 51 75 53 37 30.12 30.08 30.03 10 10 10 9 5 - 0.00  
2 82 74 66 64 59 53 88 64 39 30.05 30.01 29.96 10 10 10 14 6 20 0.00  
3 87 75 63 68 63 56 84 67 49 29.99 29.94 29.88 10 10 8 8 4 - 0.00  
4 81 74 68 70 68 66 100 87 62 29.91 29.88 29.84 10 6 1 18 5 23 0.31 Rain , Thunderstorm
5 78 70 62 70 66 63 100 90 69 29.90 29.86 29.78 10 5 0 13 2 18 0.02 Fog
6 82 72 64 66 61 57 90 69 44 29.92 29.87 29.81 10 10 10 8 5 - 0.00  
7 79 70 60 65 60 56 94 79 48 29.91 29.80 29.66 10 10 4 16 6 23 0.16 Rain , Thunderstorm
8 71 62 55 59 53 47 97 80 46 29.85 29.71 29.63 10 9 4 23 11 33 0.48 Rain
9 70 60 50 51 47 42 93 65 40 30.10 29.97 29.84 10 10 10 16 4 20 0.00  
10 71 60 48 49 45 41 90 63 36 30.23 30.18 30.11 10 10 10 7 2 - 0.00  
11 79 64 50 52 50 47 93 62 39 30.22 30.18 30.13 10 10 10 14 4 20 0.00  
12 82 68 55 56 52 49 84 57 31 30.22 30.19 30.15 10 10 10 14 5 20 0.00  
13 82 69 57 60 57 53 90 69 38 30.25 30.21 30.16 10 10 10 14 4 21 0.00  
14 70 61 53 58 52 43 100 82 39 30.27 30.24 30.21 10 8 2 16 7 22 0.43 Rain
15 70 59 48 50 46 43 86 64 39 30.34 30.26 30.17 10 10 10 8 4 - 0.00  
16 77 64 52 52 48 44 86 60 33 30.16 30.08 30.02 10 10 10 10 3 20 0.00  
17 75 64 53 61 51 44 90 61 38 30.02 29.87 29.70 10 10 2 12 5 - 0.08 Rain
18 63 54 46 63 50 34 100 80 50 29.96 29.70 29.60 10 9 5 17 10 28 0.00 Rain
19 64 52 41 39 36 34 89 57 33 30.10 30.04 29.97 10 10 10 14 7 22 0.00  
20 68 60 51 52 43 36 77 56 42 29.97 29.89 29.83 10 10 10 20 12 29 0.00 Thunderstorm
21 69 58 48 50 43 35 93 64 31 29.93 29.87 29.78 10 10 7 14 4 21 0.15 Rain
22 57 52 45 50 43 38 96 73 49 30.06 29.85 29.71 10 10 7 14 7 22 0.03 Rain
23 55 49 43 41 38 34 89 70 45 30.21 30.15 30.07 10 10 10 17 9 26 0.00 Rain
24 62 49 37 39 35 32 93 59 35 30.20 30.08 29.91 10 10 10 18 7 29 0.00  
25 68 58 48 54 44 33 93 59 45 29.96 29.90 29.86 10 10 8 14 7 18 0.00  
26 68 59 51 61 56 44 100 89 52 30.15 29.96 29.88 10 4 0 10 4 - 0.01 Fog
27 66 56 46 44 40 37 90 61 38 30.25 30.20 30.16 10 10 10 12 4 - 0.00  
28 68 57 48 48 45 42 93 67 42 30.18 30.13 30.08 10 10 10 10 3 18 0.00  
29 70 57 45 48 43 38 93 67 32 30.09 30.01 29.94 10 10 8 10 3 - 0.00  
30 63 54 46 48 45 41 100 77 46 29.98 29.94 29.92 10 10 7 12 4 - 0.00