Weather History for Chicago, IL

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Month of February, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 56 °F 33 °F 12 °F
Mean Temperature 52 °F 26 °F 4 °F
Min Temperature 47 °F 20 °F -9 °F
Degree Days  
Heating Degree Days (base 65) 61 39 13 1081
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 52 °F 20 °F -12 °F
Precipitation  
Precipitation 0.95 in 0.16 in 0.00 in 3.52 in
Snowdepth 21.0 in 14.2 in 1.0 in -
Wind  
Wind 41 mph 11 mph 0 mph
Gust Wind 61 mph 25 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.53 in 30.02 in 29.52 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Feb. 14, 2011 Rise Set
Actual Time 6:49 AM CST 5:23 PM CST
Civil Twilight 6:20 AM CST 5:51 PM CST
Nautical Twilight 5:47 AM CST 6:24 PM CST
Astronomical Twilight 5:15 AM CST 6:56 PM CST
Moon 1:20 PM CST (2/14) 3:56 AM CST (2/14)
Length of Visible Light 11h 31m
Length of Day
10h 33m
Waxing Gibbous, 83% of the Moon is Illuminated
Feb 14
Waxing Gibbous
Feb 18
Full
Feb 24
Last Quarter
Mar 4
New
Mar 12
First Quarter

Weather History Calendar

Precipitation Actual month total 3.52 Normal Month Total: 1.63
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Thunderstorm
Actual:
23 | 20 0.74
Average:
31 | 16 0.05
Snow
Actual:
23 | 5 0.74
Average:
31 | 16 0.05
Scattered Clouds
Actual:
16 | -6 0.00
Average:
31 | 16 0.05
Scattered Clouds
Actual:
25 | 5 0.00
Average:
32 | 16 0.05
Partly Cloudy
Actual:
28 | 4 0.00
Average:
32 | 16 0.05
Snow
Actual:
32 | 24 0.20
Average:
32 | 17 0.05
Snow
Actual:
32 | 19 0.13
Average:
32 | 17 0.05
Snow
Actual:
20 | 2 T
Average:
33 | 17 0.06
Partly Cloudy
Actual:
12 | -2 0.00
Average:
33 | 18 0.06
Scattered Clouds
Actual:
16 | -9 0.00
Average:
33 | 18 0.06
Snow
Actual:
30 | 5 T
Average:
33 | 18 0.06
Partly Cloudy
Actual:
37 | 24 T
Average:
34 | 18 0.06
Partly Cloudy
Actual:
45 | 32 0.00
Average:
34 | 19 0.06
Partly Cloudy
Actual:
42 | 26 0.00
Average:
34 | 19 0.06
Partly Cloudy
Actual:
38 | 23 T
Average:
35 | 19 0.06
Mostly Cloudy
Actual:
49 | 37 0.00
Average:
35 | 20 0.06
Mostly Cloudy
Actual:
56 | 47 0.00
Average:
35 | 20 0.06
Scattered Clouds
Actual:
50 | 33 0.00
Average:
36 | 20 0.06
Partly Cloudy
Actual:
35 | 25 0.00
Average:
36 | 20 0.06
Thunderstorm
Actual:
36 | 28 0.95
Average:
36 | 21 0.06
Snow
Actual:
33 | 25 T
Average:
37 | 21 0.06
Snow
Actual:
27 | 23 0.03
Average:
37 | 21 0.06
Snow
Actual:
33 | 24 0.11
Average:
37 | 22 0.06
Overcast
Actual:
36 | 32 T
Average:
38 | 22 0.06
Snow
Actual:
36 | 29 0.10
Average:
38 | 22 0.06
Snow
Actual:
33 | 24 0.13
Average:
39 | 23 0.06
Thunderstorm
Actual:
36 | 25 0.25
Average:
39 | 23 0.07
Snow
Actual:
37 | 25 0.14
Average:
39 | 23 0.07
 

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

2011 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 23 22 20 20 18 16 100 89 77 30.25 30.03 29.71 10 3 0 41 24 61 0.74 Snow , Thunderstorm
2 23 14 5 20 14 1 100 80 59 30.50 30.03 29.67 10 3 0 39 18 51 0.74 Snow
3 16 5 -6 0 -5 -9 80 61 42 30.53 30.45 30.31 10 10 10 20 11 24 0.00  
4 25 15 5 10 2 -5 60 55 50 30.29 30.09 29.87 10 10 10 23 12 29 0.00  
5 28 16 4 19 9 1 88 69 50 29.85 29.72 29.62 10 10 9 15 5 20 0.00  
6 32 28 24 29 26 21 100 91 81 30.00 29.87 29.79 10 4 0 14 5 20 0.20 Fog , Snow
7 32 26 19 23 20 16 92 78 63 30.09 30.01 29.93 10 6 0 14 6 21 0.13 Fog , Snow
8 20 11 2 18 3 -8 91 71 51 30.41 30.27 30.06 10 9 5 21 11 26 T Snow
9 12 5 -2 4 -6 -10 76 66 55 30.36 30.28 30.23 10 10 10 12 10 14 0.00  
10 16 4 -9 5 -4 -12 83 66 48 30.25 30.12 30.01 10 10 10 22 9 28 0.00  
11 30 18 5 25 13 1 87 77 67 30.03 29.95 29.87 10 9 5 18 9 23 T Snow
12 37 31 24 29 25 21 88 76 64 30.13 30.02 29.87 10 10 10 20 11 24 T  
13 45 39 32 30 28 26 78 66 53 29.86 29.69 29.52 10 10 10 25 16 36 0.00  
14 42 34 26 31 28 23 92 73 53 30.38 30.01 29.59 10 10 10 26 13 37 0.00  
15 38 31 23 30 23 16 84 66 48 30.37 30.22 30.02 10 10 10 21 13 26 T  
16 49 43 37 45 36 30 96 81 66 30.01 29.96 29.81 10 9 5 17 8 23 0.00  
17 56 52 47 52 47 41 93 88 83 29.81 29.68 29.56 10 10 9 28 18 37 0.00  
18 50 42 33 30 25 18 75 57 39 30.29 30.08 29.77 10 10 10 28 16 36 0.00  
19 35 30 25 24 18 12 84 66 47 30.45 30.39 30.30 10 10 10 17 8 23 0.00  
20 36 32 28 34 32 24 100 85 69 30.30 29.86 29.65 10 5 2 18 11 25 0.95 Rain , Thunderstorm
21 33 29 25 32 27 22 96 91 85 29.98 29.82 29.66 10 7 3 22 15 29 T Rain , Snow
22 27 25 23 22 20 18 88 78 68 30.31 30.17 30.00 10 7 2 13 8 20 0.03 Snow
23 33 29 24 31 25 19 100 88 75 30.30 30.13 30.00 10 7 2 18 9 22 0.11 Snow
24 36 34 32 32 28 25 100 82 64 30.13 30.03 29.88 10 8 1 22 12 32 T  
25 36 33 29 28 24 20 100 76 52 30.19 30.05 29.88 10 8 1 24 10 32 0.10 Snow
26 33 29 24 31 25 21 100 91 81 30.13 29.98 29.79 9 3 1 12 5 21 0.13 Snow
27 36 31 25 31 28 22 100 82 64 29.89 29.76 29.61 10 6 1 20 8 26 0.25 Rain , Thunderstorm
28 37 31 25 28 23 18 92 70 47 30.31 30.02 29.68 10 9 6 22 9 28 0.14 Rain , Snow