Weather History for Rockford, IL

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 93 °F 71 °F 55 °F
Mean Temperature 84 °F 62 °F 49 °F
Min Temperature 77 °F 52 °F 37 °F
Degree Days  
Heating Degree Days (base 65) 16 6 0 166
Cooling Degree Days (base 65) 19 2 0 66
Growing Degree Days (base 50) 32 11 0 338
Dew Point  
Dew Point 76 °F 51 °F 26 °F
Precipitation  
Precipitation 3.93 in 0.20 in 0.00 in 5.33 in
Snowdepth - - - -
Wind  
Wind 46 mph 8 mph 0 mph
Gust Wind 58 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.43 in 30.02 in 29.48 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 08, 2011 Rise Set
Actual Time 6:28 AM CDT 7:18 PM CDT
Civil Twilight 6:00 AM CDT 7:47 PM CDT
Nautical Twilight 5:26 AM CDT 8:20 PM CDT
Astronomical Twilight 4:51 AM CDT 8:55 PM CDT
Moon 5:15 PM CDT (9/8) 2:43 AM CDT (9/8)
Length of Visible Light 13h 46m
Length of Day
12h 49m
Waxing Gibbous, 87% of the Moon is Illuminated
Sep 8
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Weather History Calendar

Precipitation Actual month total 5.33 Normal Month Total: 3.35
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
93 | 70 0.00
Average:
80 | 59 0.12
Thunderstorm
Actual:
90 | 77 T
Average:
80 | 58 0.13
Thunderstorm
Actual:
83 | 67 0.59
Average:
80 | 58 0.11
Partly Cloudy
Actual:
71 | 56 0.00
Average:
80 | 58 0.12
Scattered Clouds
Actual:
66 | 50 0.00
Average:
79 | 57 0.11
Clear
Actual:
70 | 46 0.00
Average:
79 | 57 0.12
Scattered Clouds
Actual:
73 | 48 0.00
Average:
79 | 56 0.11
Partly Cloudy
Actual:
78 | 52 0.00
Average:
78 | 56 0.12
Partly Cloudy
Actual:
75 | 57 T
Average:
78 | 56 0.12
Partly Cloudy
Actual:
82 | 60 T
Average:
78 | 55 0.11
Fog
Actual:
83 | 56 0.00
Average:
77 | 55 0.11
Partly Cloudy
Actual:
84 | 61 0.00
Average:
77 | 54 0.11
Clear
Actual:
73 | 53 0.00
Average:
77 | 54 0.11
Partly Cloudy
Actual:
62 | 41 0.00
Average:
76 | 53 0.11
Partly Cloudy
Actual:
61 | 37 0.00
Average:
76 | 53 0.11
Rain
Actual:
57 | 45 0.02
Average:
76 | 52 0.11
Partly Cloudy
Actual:
70 | 45 0.00
Average:
75 | 52 0.12
Rain
Actual:
63 | 54 0.60
Average:
75 | 51 0.11
Rain
Actual:
74 | 53 0.01
Average:
74 | 51 0.11
Fog
Actual:
77 | 48 0.00
Average:
74 | 50 0.11
Partly Cloudy
Actual:
69 | 55 0.00
Average:
73 | 50 0.12
Mostly Cloudy
Actual:
65 | 49 0.00
Average:
73 | 49 0.11
Partly Cloudy
Actual:
58 | 43 0.00
Average:
73 | 49 0.11
Rain
Actual:
64 | 48 0.01
Average:
72 | 49 0.11
Rain
Actual:
66 | 46 0.03
Average:
72 | 48 0.11
Rain
Actual:
55 | 51 3.93
Average:
71 | 48 0.11
Rain
Actual:
62 | 51 0.10
Average:
71 | 47 0.10
Fog
Actual:
70 | 50 T
Average:
70 | 47 0.10
Rain
Actual:
70 | 47 0.04
Average:
70 | 46 0.10
Partly Cloudy
Actual:
63 | 43 0.00
Average:
70 | 46 0.10
 

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 93 82 70 76 72 68 93 75 56 29.97 29.92 29.86 10 8 2 15 6 18 0.00  
2 90 84 77 74 71 68 85 70 55 29.95 29.90 29.86 10 9 6 14 6 17 T Rain , Thunderstorm
3 83 75 67 74 67 64 97 78 58 29.98 29.92 29.87 10 8 1 20 6 25 0.59 Rain , Thunderstorm
4 71 64 56 65 55 50 93 73 53 30.09 29.98 29.90 10 10 10 20 11 26 0.00  
5 66 58 50 50 45 43 86 66 45 30.19 30.16 30.10 10 10 10 23 12 29 0.00  
6 70 58 46 47 45 42 86 63 40 30.25 30.21 30.17 10 10 10 17 8 23 0.00  
7 73 61 48 52 47 44 93 66 38 30.25 30.21 30.18 10 10 10 20 9 25 0.00  
8 78 65 52 57 50 44 83 57 31 30.19 30.11 30.03 10 10 9 23 11 30 0.00  
9 75 66 57 61 58 53 86 74 61 30.01 29.99 29.95 10 10 10 20 8 26 T  
10 82 71 60 64 59 54 93 72 51 30.05 30.02 29.99 10 10 8 13 2 16 T  
11 83 70 56 62 59 55 97 70 43 30.06 30.02 29.97 10 8 2 14 5 18 0.00 Fog
12 84 73 61 63 59 57 90 67 43 30.02 29.93 29.81 10 10 10 20 9 26 0.00  
13 73 63 53 59 51 46 84 63 41 30.04 29.93 29.80 10 10 10 21 8 28 0.00  
14 62 52 41 48 39 26 93 61 28 30.27 30.14 30.01 10 10 10 18 8 23 0.00  
15 61 49 37 41 34 29 85 58 31 30.43 30.37 30.28 10 10 10 18 5 22 0.00  
16 57 51 45 47 42 37 83 69 55 30.41 30.37 30.31 10 10 10 10 3 21 0.02 Rain
17 70 58 45 50 45 41 93 65 36 30.34 30.28 30.22 10 10 10 17 8 23 0.00  
18 63 59 54 61 55 45 100 79 57 30.22 30.10 29.94 10 5 2 16 8 21 0.60 Rain
19 74 64 53 61 57 51 97 73 49 30.05 29.98 29.92 10 8 2 14 5 17 0.01 Fog , Rain
20 77 63 48 57 51 47 100 72 43 30.06 30.00 29.92 10 8 2 22 8 26 0.00 Fog
21 69 62 55 55 49 46 78 67 56 30.05 29.96 29.91 10 10 10 21 10 26 0.00  
22 65 57 49 49 46 42 83 64 44 30.16 30.11 30.04 10 10 10 14 7 17 0.00  
23 58 51 43 45 42 40 89 73 57 30.16 30.11 30.06 10 10 10 12 4 14 0.00  
24 64 56 48 50 46 43 93 72 51 30.07 30.03 29.99 10 10 9 13 5 15 0.01 Rain
25 66 56 46 54 49 45 96 78 60 30.01 29.91 29.82 10 8 2 12 5 20 0.03 Fog , Rain
26 55 53 51 54 51 48 100 93 86 29.80 29.58 29.48 10 4 1 33 17 44 3.93 Rain
27 62 57 51 54 52 49 93 86 78 29.83 29.76 29.66 10 9 4 20 10 24 0.10 Rain
28 70 60 50 55 51 48 96 75 53 29.87 29.83 29.80 10 7 1 15 5 18 T Fog
29 70 59 47 55 48 41 100 69 37 29.83 29.76 29.65 10 8 2 46 13 58 0.04 Rain
30 63 53 43 41 37 34 76 58 39 30.23 30.06 29.83 10 10 10 26 14 36 0.00