Weather History for Decatur, IL

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 72 °F 45 °F 29 °F
Mean Temperature 65 °F 38 °F 24 °F
Min Temperature 58 °F 31 °F 14 °F
Degree Days  
Heating Degree Days (base 65) 41 27 0 828
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 14 1 0 22
Dew Point  
Dew Point 62 °F 33 °F 11 °F
Precipitation  
Precipitation 0.72 in 0.08 in 0.00 in 2.28 in
Snowdepth - - - -
Wind  
Wind 40 mph 11 mph 0 mph
Gust Wind 58 mph 26 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.43 in 30.01 in 29.17 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 11, 2012 Rise Set
Actual Time 7:07 AM CST 4:30 PM CST
Civil Twilight 6:36 AM CST 5:01 PM CST
Nautical Twilight 6:02 AM CST 5:35 PM CST
Astronomical Twilight 5:30 AM CST 6:07 PM CST
Moon 5:01 AM CST (12/11) 3:09 PM CST (12/11)
Length of Visible Light 10h 24m
Length of Day
9h 23m
Waning Crescent, 4% of the Moon is Illuminated
Dec 11
Waning Crescent
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Weather History Calendar

Precipitation Actual month total 2.28 Normal Month Total: 2.54
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
63 | 36 0.00
Average:
44 | 28 0.08
Rain
Actual:
67 | 50 0.11
Average:
43 | 27 0.09
Partly Cloudy
Actual:
72 | 58 0.00
Average:
43 | 27 0.07
Rain
Actual:
62 | 37 0.27
Average:
42 | 26 0.08
Clear
Actual:
47 | 31 0.00
Average:
42 | 26 0.09
Rain
Actual:
51 | 32 0.01
Average:
42 | 26 0.09
Rain
Actual:
48 | 44 0.22
Average:
41 | 25 0.08
Rain
Actual:
46 | 40 0.01
Average:
41 | 25 0.08
Rain
Actual:
50 | 39 0.26
Average:
40 | 24 0.08
Mostly Cloudy
Actual:
40 | 27 0.00
Average:
40 | 24 0.08
Clear
Actual:
36 | 20 0.00
Average:
40 | 24 0.08
Clear
Actual:
45 | 23 0.00
Average:
39 | 24 0.07
Clear
Actual:
49 | 29 0.00
Average:
39 | 23 0.08
Scattered Clouds
Actual:
53 | 30 0.00
Average:
39 | 23 0.07
Rain
Actual:
54 | 43 0.33
Average:
39 | 23 0.07
Overcast
Actual:
50 | 40 0.00
Average:
38 | 22 0.07
Rain
Actual:
40 | 34 0.05
Average:
38 | 22 0.07
Partly Cloudy
Actual:
50 | 33 0.00
Average:
38 | 22 0.07
Thunderstorm
Actual:
46 | 33 0.23
Average:
38 | 22 0.07
Snow
Actual:
55 | 25 0.72
Average:
37 | 22 0.08
Scattered Clouds
Actual:
29 | 19 0.00
Average:
37 | 21 0.09
Clear
Actual:
38 | 14 0.00
Average:
37 | 21 0.09
Clear
Actual:
39 | 28 0.00
Average:
37 | 21 0.09
Mostly Cloudy
Actual:
34 | 24 0.00
Average:
37 | 21 0.09
Overcast
Actual:
34 | 24 0.00
Average:
37 | 21 0.09
Overcast
Actual:
34 | 29 0.00
Average:
36 | 21 0.09
Overcast
Actual:
31 | 28 0.00
Average:
36 | 20 0.08
Overcast
Actual:
34 | 29 0.00
Average:
36 | 20 0.09
Snow
Actual:
32 | 18 T
Average:
36 | 20 0.09
Clear
Actual:
38 | 16 0.00
Average:
36 | 20 0.10
Snow
Actual:
36 | 25 0.07
Average:
36 | 20 0.09
 

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
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 63 50 36 54 48 36 100 84 67 30.13 30.06 29.95 10 8 2 23 13 31 0.00  
2 67 59 50 59 56 50 100 85 69 30.06 30.01 29.94 10 8 3 22 10 29 0.11 Rain
3 72 65 58 62 59 57 100 83 66 30.04 29.96 29.86 10 8 4 32 18 39 0.00  
4 62 50 37 56 47 36 100 80 59 30.29 30.11 29.92 10 9 5 18 9 25 0.27 Rain
5 47 39 31 36 33 29 100 83 65 30.43 30.33 30.21 10 10 10 13 7 16 0.00  
6 51 42 32 44 37 31 96 84 71 30.19 30.06 29.96 10 10 9 14 6 16 0.01 Rain
7 48 46 44 48 46 44 100 100 100 29.96 29.89 29.83 8 3 0 12 5 18 0.22 Fog , Rain
8 46 43 40 46 42 38 100 91 82 30.04 29.95 29.84 10 5 0 16 7 20 0.01 Fog , Rain
9 50 45 39 49 43 37 100 93 86 30.01 29.85 29.77 10 6 1 21 11 29 0.26 Rain
10 40 34 27 36 25 21 92 84 75 30.04 29.92 29.81 10 10 8 22 12 28 0.00  
11 36 28 20 25 21 18 92 72 52 30.24 30.13 30.06 10 10 10 21 9 25 0.00  
12 45 34 23 29 26 20 88 71 53 30.37 30.31 30.24 10 10 10 15 7 18 0.00  
13 49 39 29 30 27 25 78 62 46 30.35 30.29 30.19 10 10 10 22 13 26 0.00  
14 53 42 30 39 33 27 92 73 54 30.24 30.16 30.04 10 10 10 14 8 18 0.00  
15 54 49 43 52 47 35 100 83 65 30.00 29.75 29.62 10 9 2 28 15 37 0.33 Rain
16 50 45 40 49 41 36 100 91 82 29.78 29.72 29.67 10 10 9 18 9 22 0.00  
17 40 37 34 38 36 35 100 93 85 29.79 29.72 29.65 10 6 3 10 5 13 0.05 Rain
18 50 42 33 40 35 32 100 83 66 29.91 29.77 29.63 10 8 6 28 13 36 0.00  
19 46 40 33 45 37 32 100 91 82 30.06 29.92 29.63 10 8 5 23 11 30 0.23 Rain , Thunderstorm
20 55 40 25 52 37 20 100 88 76 29.78 29.37 29.17 10 6 1 40 25 58 0.72 Rain , Snow
21 29 24 19 19 16 13 84 71 58 30.29 30.08 29.81 10 10 10 32 18 44 0.00  
22 38 26 14 26 18 11 88 71 54 30.30 30.17 29.93 10 10 10 15 6 18 0.00  
23 39 32 28 30 28 26 92 78 64 30.01 29.94 29.91 10 9 5 12 6 - 0.00  
24 34 29 24 29 25 19 92 84 75 30.14 29.96 29.81 9 6 3 22 11 32 0.00  
25 34 29 24 27 24 19 88 79 69 30.29 30.18 30.07 10 9 5 24 14 30 0.00  
26 34 32 29 25 23 21 78 71 64 30.13 30.01 29.92 10 10 10 30 19 40 0.00  
27 31 30 28 23 21 20 78 71 63 30.22 30.16 30.12 10 10 10 14 6 16 0.00  
28 34 32 29 29 26 22 85 80 75 30.12 29.99 29.88 10 8 5 12 6 - 0.00  
29 32 25 18 28 20 13 92 78 63 30.34 30.10 29.86 10 7 3 23 13 29 T Snow
30 38 27 16 25 20 13 84 72 59 30.43 30.34 30.22 10 8 5 18 10 24 0.00  
31 36 31 25 31 27 20 92 76 59 30.19 30.13 30.08 10 4 0 22 10 26 0.07 Fog , Snow