Weather History for Chicago, IL

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Month of February, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 59 °F 40 °F 20 °F
Mean Temperature 47 °F 33 °F 15 °F
Min Temperature 35 °F 26 °F 10 °F
Degree Days  
Heating Degree Days (base 65) 50 32 18 923
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 52 °F 25 °F -2 °F
Precipitation  
Precipitation 0.54 in 0.06 in 0.00 in 1.64 in
Snowdepth 3.0 in 0.3 in 0.0 in -
Wind  
Wind 37 mph 10 mph 0 mph
Gust Wind 48 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.50 in 30.08 in 29.38 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Feb. 17, 2012 Rise Set
Actual Time 6:45 AM CST 5:26 PM CST
Civil Twilight 6:16 AM CST 5:55 PM CST
Nautical Twilight 5:44 AM CST 6:27 PM CST
Astronomical Twilight 5:12 AM CST 7:00 PM CST
Moon 3:39 AM CST (2/17) 1:16 PM CST (2/17)
Length of Visible Light 11h 38m
Length of Day
10h 41m
Waning Crescent, 19% of the Moon is Illuminated
Feb 17
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter

Weather History Calendar

Precipitation Actual month total 1.64 Normal Month Total: 1.79
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
48 | 32 0.00
Average:
32 | 17 0.05
Mostly Cloudy
Actual:
43 | 31 0.00
Average:
32 | 17 0.05
Overcast
Actual:
39 | 33 0.00
Average:
32 | 17 0.05
Partly Cloudy
Actual:
42 | 29 0.00
Average:
32 | 17 0.05
Partly Cloudy
Actual:
45 | 29 0.00
Average:
32 | 18 0.05
Mostly Cloudy
Actual:
33 | 30 0.00
Average:
33 | 18 0.05
Snow
Actual:
36 | 29 0.01
Average:
33 | 18 0.06
Partly Cloudy
Actual:
37 | 25 0.00
Average:
33 | 18 0.05
Scattered Clouds
Actual:
36 | 21 0.00
Average:
33 | 18 0.06
Snow
Actual:
36 | 14 0.19
Average:
34 | 19 0.06
Scattered Clouds
Actual:
20 | 10 0.00
Average:
34 | 19 0.06
Clear
Actual:
35 | 16 0.00
Average:
34 | 19 0.06
Snow
Actual:
36 | 15 0.03
Average:
35 | 19 0.07
Snow
Actual:
36 | 29 T
Average:
35 | 20 0.06
Rain
Actual:
43 | 30 0.16
Average:
35 | 20 0.06
Rain
Actual:
47 | 34 0.02
Average:
36 | 20 0.07
Partly Cloudy
Actual:
49 | 28 0.00
Average:
36 | 21 0.06
Scattered Clouds
Actual:
39 | 27 0.00
Average:
36 | 21 0.07
Partly Cloudy
Actual:
38 | 24 0.00
Average:
37 | 21 0.07
Partly Cloudy
Actual:
45 | 22 0.00
Average:
37 | 22 0.07
Snow
Actual:
41 | 33 0.06
Average:
37 | 22 0.07
Snow
Actual:
44 | 29 0.01
Average:
38 | 22 0.07
Snow
Actual:
40 | 29 0.33
Average:
38 | 23 0.08
Snow
Actual:
35 | 26 0.54
Average:
38 | 23 0.08
Scattered Clouds
Actual:
27 | 16 0.00
Average:
39 | 23 0.08
Scattered Clouds
Actual:
53 | 17 0.00
Average:
39 | 24 0.07
Scattered Clouds
Actual:
40 | 25 0.00
Average:
40 | 24 0.08
Rain
Actual:
44 | 23 0.11
Average:
40 | 24 0.08
Snow
Actual:
59 | 35 0.18
Average:
40 | 24 0.08
 

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
Feb high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 48 40 32 35 33 30 85 71 56 30.18 30.09 29.93 10 9 5 14 5 18 0.00  
2 43 37 31 36 32 28 92 81 70 30.44 30.29 30.16 10 5 2 10 4 17 0.00  
3 39 36 33 32 31 30 89 80 70 30.50 30.43 30.35 10 6 4 15 7 24 0.00  
4 42 36 29 32 30 26 85 76 67 30.36 30.27 30.19 10 8 5 16 10 29 0.00  
5 45 37 29 32 28 25 85 69 53 30.32 30.26 30.18 10 10 7 14 5 32 0.00  
6 33 32 30 28 27 25 92 84 75 30.22 30.18 30.13 8 5 2 17 11 22 0.00  
7 36 33 29 31 26 19 85 76 66 30.40 30.32 30.20 10 8 1 24 12 33 0.01 Snow
8 37 31 25 19 17 13 81 60 38 30.41 30.36 30.29 10 10 10 13 8 17 0.00  
9 36 29 21 23 18 15 84 66 47 30.31 30.21 30.09 10 10 7 18 10 24 0.00  
10 36 25 14 31 21 1 89 74 59 30.20 29.99 29.88 10 5 0 28 15 38 0.19 Fog , Snow
11 20 15 10 2 1 -2 66 56 45 30.40 30.36 30.24 10 10 10 28 15 35 0.00  
12 35 26 16 14 7 0 59 49 38 30.36 30.31 30.23 10 10 10 20 12 23 0.00  
13 36 26 15 27 17 6 85 63 40 30.23 30.03 29.85 10 8 2 21 9 25 0.03 Snow
14 36 33 29 29 27 25 92 81 70 30.03 29.88 29.80 10 8 3 15 8 20 T Snow
15 43 37 30 37 33 28 92 81 70 30.09 30.03 29.95 10 7 4 17 9 22 0.16 Rain
16 47 41 34 37 31 20 92 65 37 30.12 30.03 29.95 10 7 3 20 9 25 0.02 Rain
17 49 39 28 32 26 22 78 60 42 30.17 30.08 29.99 10 10 10 22 9 29 0.00  
18 39 33 27 27 22 17 75 60 44 30.24 30.17 30.03 10 10 9 16 8 25 0.00  
19 38 31 24 23 20 18 81 63 44 30.24 30.20 30.17 10 10 10 14 6 23 0.00  
20 45 34 22 25 21 18 88 63 37 30.32 30.18 29.91 10 10 10 20 10 24 0.00  
21 41 37 33 36 32 24 96 75 54 29.86 29.68 29.63 10 7 1 26 12 36 0.06 Rain , Snow
22 44 37 29 36 32 27 89 77 64 29.69 29.52 29.42 10 9 4 12 6 17 0.01 Rain , Snow
23 40 35 29 34 32 28 96 86 76 29.58 29.51 29.47 10 4 1 16 7 26 0.33 Fog , Rain , Snow
24 35 31 26 32 27 15 96 80 63 29.94 29.62 29.38 10 4 1 24 16 33 0.54 Snow
25 27 22 16 16 14 12 74 65 55 30.34 30.19 29.96 10 10 10 20 11 25 0.00  
26 53 35 17 31 23 13 84 63 41 30.33 30.13 29.98 10 10 9 28 14 37 0.00  
27 40 33 25 24 21 19 75 61 46 30.49 30.32 30.10 10 10 10 26 11 33 0.00  
28 44 34 23 36 26 19 81 63 45 30.49 30.23 29.80 10 9 3 20 9 23 0.11 Rain
29 59 47 35 52 37 30 93 67 40 29.77 29.55 29.40 10 6 0 37 18 48 0.18 Fog , Rain , Snow