Weather History for Rockford, IL

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 96 °F 78 °F 59 °F
Mean Temperature 83 °F 67 °F 56 °F
Min Temperature 69 °F 55 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 9 2 0 71
Cooling Degree Days (base 65) 18 4 0 125
Growing Degree Days (base 50) 32 17 6 498
Dew Point  
Dew Point 74 °F 55 °F 32 °F
Precipitation  
Precipitation 1.10 in 0.06 in 0.00 in 1.61 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 7 mph 0 mph
Gust Wind 43 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.41 in 30.03 in 29.73 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 02, 2013 Rise Set
Actual Time 6:23 AM CDT 7:28 PM CDT
Civil Twilight 5:54 AM CDT 7:56 PM CDT
Nautical Twilight 5:19 AM CDT 8:30 PM CDT
Astronomical Twilight 4:43 AM CDT 9:06 PM CDT
Moon 3:38 AM CDT (9/2) 5:42 PM CDT (9/2)
Length of Visible Light 14h 02m
Length of Day
13h 05m
Waning Crescent, 8% of the Moon is Illuminated
Sep 2
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.61 Normal Month Total: 3.35
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Fog
Actual:
88 | 61 0.00
Average:
80 | 59 0.12
Scattered Clouds
Actual:
76 | 57 0.00
Average:
80 | 58 0.13
Scattered Clouds
Actual:
77 | 53 0.00
Average:
80 | 58 0.11
Partly Cloudy
Actual:
84 | 51 0.00
Average:
80 | 58 0.12
Partly Cloudy
Actual:
78 | 60 0.00
Average:
79 | 57 0.11
Partly Cloudy
Actual:
87 | 59 0.00
Average:
79 | 57 0.12
Partly Cloudy
Actual:
91 | 65 0.03
Average:
79 | 56 0.11
Mostly Cloudy
Actual:
79 | 69 0.00
Average:
78 | 56 0.12
Partly Cloudy
Actual:
94 | 68 0.00
Average:
78 | 56 0.12
Clear
Actual:
96 | 69 0.00
Average:
78 | 55 0.11
Rain
Actual:
87 | 66 0.02
Average:
77 | 55 0.11
Fog
Actual:
81 | 58 0.00
Average:
77 | 54 0.11
Scattered Clouds
Actual:
70 | 48 0.00
Average:
77 | 54 0.11
Fog
Actual:
73 | 41 0.00
Average:
76 | 53 0.11
Rain
Actual:
59 | 53 1.10
Average:
76 | 53 0.11
Partly Cloudy
Actual:
68 | 47 0.00
Average:
76 | 52 0.11
Rain
Actual:
72 | 47 T
Average:
75 | 52 0.12
Thunderstorm
Actual:
76 | 59 0.20
Average:
75 | 51 0.11
Thunderstorm
Actual:
92 | 69 0.15
Average:
74 | 51 0.11
Rain
Actual:
73 | 56 0.04
Average:
74 | 50 0.11
Scattered Clouds
Actual:
68 | 48 0.00
Average:
73 | 50 0.12
Fog
Actual:
70 | 43 0.00
Average:
73 | 49 0.11
Scattered Clouds
Actual:
72 | 47 0.00
Average:
73 | 49 0.11
Scattered Clouds
Actual:
74 | 49 0.00
Average:
72 | 49 0.11
Clear
Actual:
75 | 48 0.00
Average:
72 | 48 0.11
Fog
Actual:
78 | 49 0.00
Average:
71 | 48 0.11
Scattered Clouds
Actual:
82 | 51 0.00
Average:
71 | 47 0.10
Rain
Actual:
84 | 53 0.07
Average:
70 | 47 0.10
Partly Cloudy
Actual:
73 | 49 0.00
Average:
70 | 46 0.10
Scattered Clouds
Actual:
76 | 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

2013 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 88 75 61 72 66 61 100 78 55 29.86 29.80 29.73 10 8 0 14 4 18 0.00 Fog
2 76 67 57 61 58 53 90 68 46 30.04 29.95 29.86 10 10 10 15 8 18 0.00  
3 77 65 53 58 53 50 93 68 43 30.12 30.07 30.04 10 10 10 9 2 12 0.00  
4 84 68 51 65 58 50 96 70 43 30.15 30.12 30.08 10 10 10 13 4 14 0.00  
5 78 69 60 65 59 48 93 71 48 30.27 30.21 30.14 10 8 0 16 8 21 0.00  
6 87 73 59 67 58 48 90 68 46 30.24 30.15 30.01 10 10 10 16 6 20 0.00  
7 91 78 65 69 65 61 87 65 43 30.01 29.96 29.89 10 10 6 16 6 21 0.03  
8 79 74 69 68 65 64 84 76 67 30.04 29.99 29.96 10 10 10 21 10 26 0.00  
9 94 81 68 74 70 65 97 75 52 29.96 29.88 29.81 10 7 2 18 9 22 0.00  
10 96 83 69 67 63 57 78 53 27 29.99 29.95 29.88 10 10 10 24 10 30 0.00  
11 87 77 66 70 66 63 90 69 48 30.06 30.02 29.99 10 10 7 10 3 15 0.02 Rain
12 81 70 58 64 54 47 100 68 36 30.13 30.04 30.00 10 10 10 23 9 32 0.00 Fog
13 70 59 48 50 40 32 80 53 25 30.24 30.19 30.14 10 10 10 18 9 24 0.00  
14 73 57 41 48 43 39 96 66 35 30.22 30.14 30.04 10 10 10 15 5 18 0.00 Fog
15 59 56 53 56 53 46 93 80 67 30.22 30.07 30.00 10 7 1 14 6 16 1.10 Rain
16 68 58 47 54 47 42 93 68 42 30.41 30.34 30.22 10 10 10 18 10 23 0.00  
17 72 60 47 56 50 43 93 73 53 30.36 30.26 30.12 10 10 9 16 7 21 T Rain
18 76 68 59 69 61 53 90 77 64 30.11 30.02 29.91 10 9 5 16 9 21 0.20 Rain , Thunderstorm
19 92 81 69 71 68 64 97 71 44 29.94 29.87 29.74 10 8 2 30 10 43 0.15 Rain , Thunderstorm
20 73 65 56 65 60 50 93 75 57 29.88 29.83 29.76 10 10 7 20 11 25 0.04 Rain
21 68 58 48 51 47 44 93 68 42 29.99 29.92 29.87 10 10 10 16 8 22 0.00  
22 70 57 43 48 45 41 100 70 40 30.10 30.04 30.00 10 10 10 12 3 16 0.00 Fog
23 72 60 47 50 47 44 93 69 44 30.14 30.08 30.04 10 10 10 14 7 18 0.00  
24 74 62 49 51 48 45 89 65 41 30.06 30.01 29.95 10 10 10 16 8 21 0.00  
25 75 62 48 53 49 46 93 67 41 30.01 29.98 29.94 10 9 3 14 6 24 0.00  
26 78 64 49 54 49 46 93 63 33 30.09 30.06 30.00 10 7 0 13 6 16 0.00 Fog
27 82 67 51 55 51 48 89 61 33 30.17 30.10 30.05 10 9 4 20 8 22 0.00  
28 84 69 53 66 56 47 90 67 43 30.08 29.98 29.88 10 10 5 30 13 37 0.07 Rain
29 73 61 49 52 47 40 100 66 31 30.10 30.05 30.01 10 9 2 10 4 14 0.00  
30 76 60 43 50 45 41 92 62 31 30.03 29.95 29.87 10 10 10 17 7 22 0.00