Weather History for Chicago, IL

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Month of December, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 56 °F 31 °F 12 °F
Mean Temperature 48 °F 24 °F 7 °F
Min Temperature 39 °F 16 °F -6 °F
Degree Days  
Heating Degree Days (base 65) 58 41 17 1280
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 54 °F 17 °F -10 °F
Precipitation  
Precipitation 0.31 in 0.07 in 0.00 in 1.94 in
Snowdepth 5.0 in 1.2 in 0.0 in -
Wind  
Wind 29 mph 10 mph 0 mph
Gust Wind 36 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.71 in 30.09 in 29.50 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 20, 2013 Rise Set
Actual Time 7:15 AM CST 4:23 PM CST
Civil Twilight 6:44 AM CST 4:54 PM CST
Nautical Twilight 6:08 AM CST 5:30 PM CST
Astronomical Twilight 5:34 AM CST 6:04 PM CST
Moon 7:46 PM CST (12/20) 9:07 AM CST (12/20)
Length of Visible Light 10h 10m
Length of Day
9h 07m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 20
Waning Gibbous
Dec 25
Last Quarter
Jan 1
New
Jan 7
First Quarter
Jan 15
Full

Weather History Calendar

Precipitation Actual month total 1.94 Normal Month Total: 2.25
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Partly Cloudy
Actual:
42 | 29 0.00
Average:
40 | 26 0.09
Rain
Actual:
44 | 29 0.07
Average:
40 | 25 0.10
Rain
Actual:
50 | 37 0.02
Average:
39 | 25 0.09
Overcast
Actual:
56 | 39 0.02
Average:
39 | 24 0.09
Overcast
Actual:
39 | 21 0.00
Average:
38 | 24 0.09
Partly Cloudy
Actual:
21 | 13 0.00
Average:
38 | 24 0.08
Scattered Clouds
Actual:
21 | 8 0.00
Average:
37 | 23 0.09
Snow
Actual:
26 | 15 0.24
Average:
37 | 23 0.09
Snow
Actual:
25 | 0 T
Average:
37 | 22 0.08
Snow
Actual:
25 | -6 T
Average:
36 | 22 0.08
Snow
Actual:
21 | 1 0.05
Average:
36 | 22 0.09
Partly Cloudy
Actual:
19 | -3 0.00
Average:
35 | 21 0.07
Snow
Actual:
32 | 13 0.01
Average:
35 | 21 0.08
Snow
Actual:
31 | 22 0.23
Average:
35 | 21 0.07
Snow
Actual:
23 | 10 T
Average:
35 | 21 0.07
Snow
Actual:
21 | 7 0.05
Average:
34 | 20 0.07
Snow
Actual:
33 | 16 0.01
Average:
34 | 20 0.06
Partly Cloudy
Actual:
35 | 15 0.00
Average:
34 | 20 0.06
Rain
Actual:
39 | 33 0.06
Average:
34 | 20 0.07
Rain
Actual:
36 | 33 0.31
Average:
33 | 19 0.06
Rain
Actual:
35 | 30 0.24
Average:
33 | 19 0.07
Snow
Actual:
34 | 24 0.20
Average:
33 | 19 0.06
Snow
Actual:
26 | -1 T
Average:
33 | 19 0.06
Snow
Actual:
18 | -2 0.01
Average:
33 | 19 0.06
Snow
Actual:
27 | 18 0.07
Average:
32 | 18 0.06
Snow
Actual:
34 | 14 T
Average:
32 | 18 0.06
Partly Cloudy
Actual:
41 | 21 0.00
Average:
32 | 18 0.06
Scattered Clouds
Actual:
50 | 33 0.00
Average:
32 | 18 0.06
Snow
Actual:
40 | 11 0.01
Average:
32 | 18 0.06
Snow
Actual:
13 | 1 0.04
Average:
32 | 18 0.06
Snow
Actual:
12 | 2 0.30
Average:
32 | 17 0.06
 

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
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 42 36 29 34 30 28 92 77 62 30.11 30.06 29.99 10 9 5 12 6 23 0.00  
2 44 37 29 36 31 27 92 73 53 29.97 29.85 29.75 10 7 2 16 7 21 0.07 Rain
3 50 44 37 48 43 35 100 96 92 29.75 29.70 29.66 4 3 1 15 8 18 0.02 Rain
4 56 48 39 54 48 36 100 91 82 29.73 29.62 29.50 10 5 1 29 12 36 0.02  
5 39 30 21 36 20 11 92 75 57 30.26 29.99 29.66 10 10 10 25 14 32 0.00  
6 21 17 13 10 7 2 74 65 56 30.56 30.40 30.25 10 10 10 17 10 22 0.00  
7 21 15 8 4 2 0 73 59 45 30.71 30.64 30.57 10 10 10 13 7 20 0.00  
8 26 21 15 25 17 1 92 73 53 30.59 30.20 29.92 10 5 1 20 9 23 0.24 Snow
9 25 13 0 22 9 -7 88 75 61 30.25 30.10 29.94 10 8 4 25 15 32 T Snow
10 25 10 -6 10 3 -8 79 68 56 30.31 30.13 29.99 10 8 1 29 14 36 T Snow
11 21 11 1 13 7 -9 88 72 55 30.58 30.38 30.25 10 6 1 17 9 22 0.05 Snow
12 19 8 -3 10 1 -10 79 66 53 30.55 30.37 30.22 10 10 10 20 11 29 0.00  
13 32 23 13 27 18 10 88 75 62 30.21 30.15 30.09 10 9 4 15 6 20 0.01 Snow
14 31 27 22 29 26 19 92 87 81 30.10 29.98 29.89 10 5 1 16 11 23 0.23 Snow
15 23 17 10 18 7 1 88 75 61 30.14 30.03 29.92 10 10 7 24 12 29 T Snow
16 21 14 7 18 11 -4 91 72 53 30.17 30.06 30.00 10 7 0 15 6 19 0.05 Fog , Snow
17 33 25 16 23 18 13 92 73 54 30.09 30.00 29.93 10 7 1 21 13 27 0.01 Snow
18 35 25 15 25 15 9 80 60 39 30.16 30.00 29.83 10 10 10 25 13 33 0.00  
19 39 36 33 32 30 25 89 77 64 29.93 29.87 29.79 10 6 1 18 7 24 0.06 Rain
20 36 35 33 32 30 29 89 89 89 29.82 29.77 29.71 9 4 2 18 9 23 0.31 Rain
21 35 33 30 34 30 27 100 91 82 29.85 29.78 29.63 10 3 0 23 9 34 0.24 Fog , Rain
22 34 29 24 33 28 19 100 91 81 30.12 29.80 29.58 10 7 2 21 11 26 0.20 Rain , Snow
23 26 13 -1 21 6 -10 88 77 65 30.47 30.32 30.12 10 9 5 21 13 27 T Snow
24 18 8 -2 9 -4 -10 72 63 53 30.58 30.49 30.36 10 8 1 15 9 20 0.01 Snow
25 27 23 18 22 17 9 81 72 62 30.35 30.17 30.07 10 6 0 18 10 22 0.07 Snow
26 34 24 14 26 16 8 74 69 63 30.30 30.20 30.07 10 10 7 23 10 28 T Snow
27 41 31 21 28 25 17 92 73 54 30.29 30.19 30.08 10 9 4 22 10 32 0.00  
28 50 42 33 31 29 27 82 64 46 30.09 29.98 29.82 10 10 10 22 13 28 0.00  
29 40 26 11 28 18 -1 85 71 56 30.20 29.93 29.53 10 9 2 21 12 28 0.01 Snow
30 13 7 1 2 -2 -8 73 60 46 30.35 30.24 30.17 10 7 2 17 7 20 0.04 Snow
31 12 7 2 6 2 -5 76 70 63 30.37 30.30 30.16 10 5 1 15 8 22 0.30 Snow