Weather History for Grand Rapids, MI

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 91 °F 72 °F 56 °F
Mean Temperature 83 °F 62 °F 49 °F
Min Temperature 74 °F 52 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 16 5 0 157
Cooling Degree Days (base 65) 18 2 0 73
Growing Degree Days (base 50) 32 12 0 355
Dew Point  
Dew Point 73 °F 53 °F 30 °F
Precipitation  
Precipitation 0.55 in 0.09 in 0.00 in 2.23 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 40 mph 8 mph 0 mph
Gust Wind 52 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.45 in 30.00 in 29.45 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 14, 2011 Rise Set
Actual Time 7:20 AM EDT 7:54 PM EDT
Civil Twilight 6:51 AM EDT 8:22 PM EDT
Nautical Twilight 6:18 AM EDT 8:56 PM EDT
Astronomical Twilight 5:43 AM EDT 9:30 PM EDT
Moon 8:32 PM EDT (9/14) 9:35 AM EDT (9/14)
Length of Visible Light 13h 30m
Length of Day
12h 33m
Waning Gibbous, 95% of the Moon is Illuminated
Sep 14
Waning Gibbous
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter
Oct 11
Full

Weather History Calendar

Precipitation Actual month total 2.23 Normal Month Total: 4.28
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Fog
Actual:
90 | 65 0.00
Average:
78 | 58 0.13
Thunderstorm
Actual:
91 | 74 0.19
Average:
78 | 58 0.14
Partly Cloudy
Actual:
89 | 72 T
Average:
78 | 57 0.13
Rain
Actual:
74 | 57 T
Average:
77 | 57 0.14
Partly Cloudy
Actual:
65 | 49 0.00
Average:
77 | 57 0.13
Scattered Clouds
Actual:
69 | 44 0.00
Average:
77 | 56 0.14
Partly Cloudy
Actual:
72 | 48 0.00
Average:
77 | 56 0.14
Rain
Actual:
71 | 52 T
Average:
76 | 56 0.14
Rain
Actual:
78 | 57 T
Average:
76 | 55 0.14
Partly Cloudy
Actual:
82 | 61 0.02
Average:
75 | 55 0.14
Fog
Actual:
81 | 58 0.00
Average:
75 | 55 0.14
Thunderstorm
Actual:
86 | 61 0.00
Average:
75 | 54 0.14
Partly Cloudy
Actual:
76 | 50 0.00
Average:
74 | 54 0.14
Partly Cloudy
Actual:
65 | 43 0.00
Average:
74 | 53 0.14
Scattered Clouds
Actual:
62 | 40 0.00
Average:
74 | 53 0.15
Partly Cloudy
Actual:
60 | 39 0.00
Average:
73 | 53 0.15
Partly Cloudy
Actual:
68 | 49 0.00
Average:
73 | 52 0.15
Rain
Actual:
72 | 45 T
Average:
72 | 52 0.16
Rain
Actual:
67 | 50 0.40
Average:
72 | 51 0.15
Fog
Actual:
73 | 48 0.00
Average:
71 | 51 0.16
Partly Cloudy
Actual:
74 | 57 0.00
Average:
71 | 51 0.16
Partly Cloudy
Actual:
67 | 51 0.00
Average:
70 | 50 0.15
Fog
Actual:
67 | 47 0.00
Average:
70 | 50 0.15
Partly Cloudy
Actual:
68 | 50 0.05
Average:
70 | 49 0.14
Rain
Actual:
68 | 55 0.03
Average:
69 | 49 0.15
Rain
Actual:
69 | 49 0.27
Average:
69 | 49 0.14
Rain
Actual:
66 | 48 0.14
Average:
68 | 48 0.14
Rain
Actual:
61 | 50 0.49
Average:
68 | 48 0.14
Thunderstorm
Actual:
65 | 51 0.55
Average:
67 | 47 0.13
Rain
Actual:
56 | 42 0.09
Average:
67 | 47 0.13
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 90 78 65 73 68 63 93 72 50 30.02 29.96 29.91 10 8 3 9 4 12 0.00 Fog
2 91 83 74 73 71 66 88 69 50 29.98 29.92 29.88 10 7 4 24 10 31 0.19 Rain , Thunderstorm
3 89 81 72 73 68 64 93 70 46 29.94 29.88 29.82 10 8 4 28 6 37 T  
4 74 66 57 68 60 52 84 67 49 29.98 29.86 29.79 10 10 9 21 11 28 T Rain
5 65 57 49 48 45 42 83 64 44 30.16 30.07 29.99 10 10 10 23 11 28 0.00  
6 69 57 44 47 45 41 92 67 42 30.22 30.18 30.16 10 10 10 18 9 23 0.00  
7 72 60 48 54 50 46 93 71 49 30.20 30.16 30.12 10 10 10 21 10 26 0.00  
8 71 62 52 59 54 45 83 72 61 30.13 30.06 30.01 10 10 10 23 10 31 T Rain
9 78 68 57 64 59 51 93 77 60 30.01 29.98 29.94 10 10 8 12 5 16 T Rain
10 82 72 61 63 61 57 100 73 45 30.04 30.01 29.98 10 8 2 12 3 13 0.02  
11 81 70 58 64 59 55 100 76 51 30.05 30.02 29.95 10 5 0 15 5 20 0.00 Fog
12 86 74 61 64 61 57 93 69 44 29.99 29.92 29.81 10 10 7 23 11 28 0.00 Thunderstorm
13 76 63 50 63 55 45 77 63 49 29.99 29.84 29.73 10 9 6 18 11 25 0.00  
14 65 54 43 51 43 34 93 72 50 30.16 30.05 29.97 10 10 9 16 7 20 0.00  
15 62 51 40 38 35 30 85 59 32 30.36 30.29 30.17 10 10 9 18 7 24 0.00  
16 60 50 39 45 39 37 92 67 42 30.45 30.39 30.35 10 10 10 10 4 23 0.00  
17 68 59 49 46 44 42 80 61 42 30.40 30.35 30.31 10 10 10 16 7 22 0.00  
18 72 59 45 56 48 42 93 69 44 30.32 30.22 30.04 10 10 7 18 9 23 T Rain
19 67 59 50 64 60 52 93 86 78 30.02 29.94 29.88 10 7 2 16 9 20 0.40 Rain
20 73 61 48 57 49 46 100 71 41 30.11 30.05 29.99 10 4 0 12 5 14 0.00 Fog
21 74 66 57 59 54 46 93 66 38 29.99 29.94 29.89 10 9 5 28 12 32 0.00  
22 67 59 51 52 50 48 96 76 56 30.14 30.06 29.99 10 10 10 18 8 22 0.00  
23 67 57 47 49 46 41 93 68 42 30.13 30.06 29.99 10 10 9 13 4 15 0.00 Fog
24 68 59 50 53 49 45 93 69 45 30.05 30.03 29.99 10 10 8 22 5 25 0.05  
25 68 62 55 58 55 52 93 83 73 30.04 29.98 29.90 10 8 2 18 8 22 0.03 Rain
26 69 59 49 61 56 47 97 73 49 29.87 29.73 29.65 10 8 0 22 10 32 0.27 Rain
27 66 57 48 54 49 45 96 81 65 29.83 29.81 29.78 10 10 8 18 8 26 0.14 Rain
28 61 56 50 56 53 51 100 86 72 29.81 29.79 29.77 10 5 2 10 4 12 0.49 Rain
29 65 58 51 57 53 48 100 87 73 29.78 29.68 29.47 10 3 0 40 9 52 0.55 Fog , Rain , Thunderstorm
30 56 49 42 52 45 35 93 72 50 30.11 29.73 29.45 10 10 5 28 15 38 0.09 Rain