Weather History for Rockford, IL

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Month of January, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 57 °F 37 °F 13 °F
Mean Temperature 47 °F 28 °F 7 °F
Min Temperature 37 °F 18 °F 0 °F
Degree Days  
Heating Degree Days (base 65) 58 37 18 1157
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 47 °F 20 °F -13 °F
Precipitation  
Precipitation 0.53 in 0.05 in 0.00 in 1.23 in
Snowdepth 7.0 in 3.9 in 1.0 in -
Wind  
Wind 36 mph 9 mph 0 mph
Gust Wind 48 mph 25 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 29.99 in 29.31 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 01, 2012 Rise Set
Actual Time 7:25 AM CST 4:34 PM CST
Civil Twilight 6:53 AM CST 5:06 PM CST
Nautical Twilight 6:18 AM CST 5:41 PM CST
Astronomical Twilight 5:44 AM CST 6:15 PM CST
Moon 11:27 AM CST (1/1) 12:15 AM CST (1/1)
Length of Visible Light 10h 13m
Length of Day
9h 09m
First Quarter, 55% of the Moon is Illuminated
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New
Jan 30
First Quarter

Weather History Calendar

Precipitation Actual month total 1.23 Normal Month Total: 1.37
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Snow
Actual:
42 | 27 0.08
Average:
30 | 14 0.05
Snow
Actual:
27 | 15 0.01
Average:
30 | 14 0.05
Partly Cloudy
Actual:
28 | 9 0.00
Average:
30 | 14 0.05
Partly Cloudy
Actual:
40 | 21 0.00
Average:
30 | 14 0.05
Partly Cloudy
Actual:
50 | 22 0.00
Average:
30 | 14 0.05
Partly Cloudy
Actual:
57 | 30 0.00
Average:
29 | 14 0.04
Scattered Clouds
Actual:
43 | 25 0.00
Average:
29 | 14 0.05
Partly Cloudy
Actual:
40 | 19 0.00
Average:
29 | 13 0.05
Scattered Clouds
Actual:
47 | 21 0.00
Average:
29 | 13 0.05
Clear
Actual:
52 | 24 0.00
Average:
29 | 13 0.05
Scattered Clouds
Actual:
57 | 22 0.00
Average:
29 | 13 0.05
Snow
Actual:
37 | 15 0.33
Average:
29 | 13 0.04
Snow
Actual:
20 | 14 T
Average:
29 | 13 0.04
Snow
Actual:
18 | 8 T
Average:
29 | 13 0.05
Partly Cloudy
Actual:
31 | 10 0.00
Average:
29 | 13 0.04
Mostly Cloudy
Actual:
39 | 28 T
Average:
29 | 13 0.05
Snow
Actual:
37 | 9 0.13
Average:
29 | 13 0.04
Partly Cloudy
Actual:
25 | 1 0.00
Average:
29 | 13 0.04
Snow
Actual:
27 | 0 T
Average:
29 | 13 0.04
Snow
Actual:
13 | 0 0.53
Average:
29 | 13 0.04
Partly Cloudy
Actual:
24 | 9 0.00
Average:
29 | 13 0.04
Overcast
Actual:
38 | 15 T
Average:
29 | 13 0.04
Snow
Actual:
40 | 28 0.09
Average:
30 | 13 0.04
Partly Cloudy
Actual:
32 | 17 0.00
Average:
30 | 13 0.04
Mostly Cloudy
Actual:
32 | 15 0.00
Average:
30 | 14 0.04
Fog
Actual:
36 | 31 0.00
Average:
30 | 14 0.04
Snow
Actual:
39 | 25 0.03
Average:
30 | 14 0.04
Snow
Actual:
33 | 23 0.02
Average:
30 | 14 0.04
Snow
Actual:
31 | 17 0.01
Average:
30 | 14 0.05
Partly Cloudy
Actual:
52 | 20 0.00
Average:
30 | 14 0.04
Partly Cloudy
Actual:
56 | 37 0.00
Average:
30 | 14 0.04
 

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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 42 35 27 36 26 14 89 72 54 30.13 29.85 29.53 10 10 6 36 22 48 0.08 Rain , Snow
2 27 21 15 16 8 4 67 56 45 30.48 30.28 30.10 10 9 4 30 18 39 0.01 Snow
3 28 19 9 15 8 3 73 58 42 30.48 30.30 30.01 10 10 10 20 9 24 0.00  
4 40 31 21 23 18 14 75 62 48 30.11 30.03 29.96 10 10 10 16 6 21 0.00  
5 50 36 22 31 26 19 88 69 50 30.05 29.88 29.70 10 10 10 14 6 17 0.00  
6 57 44 30 34 30 26 85 63 41 29.86 29.75 29.70 10 10 10 15 6 18 0.00  
7 43 34 25 28 25 20 85 67 49 30.28 30.08 29.87 10 10 10 14 7 17 0.00  
8 40 30 19 27 22 16 96 75 54 30.39 30.34 30.29 10 9 5 10 2 14 0.00  
9 47 34 21 28 25 19 96 71 45 30.27 30.10 29.95 10 8 3 24 10 33 0.00  
10 52 38 24 30 26 21 92 67 41 30.09 29.96 29.80 10 10 10 15 4 18 0.00  
11 57 40 22 30 25 20 88 59 30 29.78 29.64 29.55 10 10 8 13 3 15 0.00  
12 37 26 15 31 18 9 88 81 73 29.67 29.54 29.44 10 3 0 22 14 29 0.33 Snow
13 20 17 14 11 9 8 80 74 67 30.09 29.92 29.64 10 8 3 20 11 24 T Snow
14 18 13 8 7 6 3 83 72 61 30.30 30.18 30.09 10 10 7 10 3 13 T Snow
15 31 21 10 23 17 6 81 77 72 30.35 30.21 29.96 10 10 9 24 13 32 0.00  
16 39 34 28 34 30 23 89 81 72 29.96 29.79 29.69 10 10 8 18 8 24 T  
17 37 23 9 32 23 2 89 78 67 30.32 29.87 29.64 10 3 1 28 15 39 0.13 Rain , Snow
18 25 13 1 16 7 -2 95 81 67 30.33 30.14 29.84 10 10 10 21 9 24 0.00  
19 27 14 0 19 -3 -12 68 57 45 30.27 30.06 29.80 10 10 5 24 11 29 T Snow
20 13 7 0 7 1 -13 83 67 51 30.29 30.17 30.08 10 4 0 16 9 20 0.53 Snow
21 24 17 9 10 5 1 80 65 50 30.31 30.23 30.11 10 10 10 18 7 22 0.00  
22 38 27 15 36 26 8 100 84 67 30.09 29.76 29.42 10 4 1 23 15 31 T  
23 40 34 28 39 31 20 100 82 63 29.94 29.50 29.31 10 5 0 28 15 37 0.09 Fog , Rain , Snow
24 32 25 17 21 19 16 91 77 63 30.39 30.19 29.93 10 10 6 21 8 25 0.00  
25 32 24 15 28 21 13 92 81 69 30.39 30.25 30.08 9 6 3 17 4 23 0.00  
26 36 34 31 32 30 28 100 91 82 30.04 29.84 29.67 6 2 0 14 4 17 0.00 Fog
27 39 32 25 30 26 20 89 71 52 29.99 29.90 29.70 10 8 1 17 8 23 0.03 Snow
28 33 28 23 30 20 13 92 70 47 30.14 29.99 29.82 10 9 2 25 14 32 0.02 Snow
29 31 24 17 25 17 10 85 68 50 30.27 30.10 29.93 10 8 1 22 9 31 0.01 Snow
30 52 36 20 35 27 14 82 66 50 30.20 29.94 29.80 10 10 10 20 10 26 0.00  
31 56 47 37 47 40 33 93 80 66 29.95 29.83 29.77 10 10 7 20 11 26 0.00