Weather History for Chicago, IL

Change the Weather History Date:

Month of August, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 84 °F 69 °F
Mean Temperature 83 °F 73 °F 65 °F
Min Temperature 72 °F 63 °F 53 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 18 8 0 263
Growing Degree Days (base 50) 33 23 15 716
Dew Point  
Dew Point 73 °F 59 °F 45 °F
Precipitation  
Precipitation 0.57 in 0.08 in 0.00 in 2.07 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 41 mph 7 mph 0 mph
Gust Wind 53 mph 21 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.17 in 29.97 in 29.75 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Aug. 28, 2012 Rise Set
Actual Time 6:13 AM CDT 7:31 PM CDT
Civil Twilight 5:44 AM CDT 7:59 PM CDT
Nautical Twilight 5:09 AM CDT 8:34 PM CDT
Astronomical Twilight 4:33 AM CDT 9:11 PM CDT
Moon 5:35 PM CDT (8/28) 3:00 AM CDT (8/28)
Length of Visible Light 14h 15m
Length of Day
13h 17m
Waxing Gibbous, 90% of the Moon is Illuminated
Aug 28
Waxing Gibbous
Aug 31
Full
Sep 8
Last Quarter
Sep 15
New
Sep 22
First Quarter

Weather History Calendar

Precipitation Actual month total 2.07 Normal Month Total: 4.90
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Scattered Clouds
Actual:
90 | 68 0.00
Average:
83 | 64 0.17
Partly Cloudy
Actual:
93 | 66 0.00
Average:
83 | 64 0.16
Scattered Clouds
Actual:
95 | 71 0.00
Average:
83 | 64 0.16
Thunderstorm
Actual:
93 | 71 0.37
Average:
83 | 64 0.16
Scattered Clouds
Actual:
84 | 66 0.00
Average:
83 | 64 0.16
Clear
Actual:
85 | 62 0.00
Average:
83 | 64 0.16
Scattered Clouds
Actual:
92 | 62 0.00
Average:
83 | 64 0.15
Rain
Actual:
84 | 72 T
Average:
83 | 64 0.16
Rain
Actual:
75 | 63 0.05
Average:
83 | 64 0.17
Thunderstorm
Actual:
76 | 61 0.18
Average:
83 | 64 0.16
Scattered Clouds
Actual:
78 | 56 0.00
Average:
82 | 64 0.17
Partly Cloudy
Actual:
76 | 55 T
Average:
82 | 64 0.17
Rain
Actual:
69 | 60 0.40
Average:
82 | 64 0.17
Rain
Actual:
84 | 56 T
Average:
82 | 63 0.17
Partly Cloudy
Actual:
85 | 65 T
Average:
82 | 63 0.18
Thunderstorm
Actual:
76 | 62 0.39
Average:
82 | 63 0.17
Scattered Clouds
Actual:
76 | 58 0.00
Average:
82 | 63 0.17
Partly Cloudy
Actual:
77 | 53 0.00
Average:
82 | 63 0.17
Partly Cloudy
Actual:
79 | 60 0.00
Average:
82 | 63 0.16
Thunderstorm
Actual:
74 | 58 0.08
Average:
82 | 63 0.16
Scattered Clouds
Actual:
79 | 53 0.00
Average:
82 | 63 0.15
Scattered Clouds
Actual:
85 | 54 0.00
Average:
82 | 63 0.15
Rain
Actual:
92 | 64 0.03
Average:
81 | 62 0.15
Partly Cloudy
Actual:
94 | 64 0.00
Average:
81 | 62 0.15
Partly Cloudy
Actual:
93 | 66 0.00
Average:
81 | 62 0.15
Rain
Actual:
79 | 66 0.57
Average:
81 | 62 0.15
Partly Cloudy
Actual:
88 | 66 0.00
Average:
81 | 62 0.14
Scattered Clouds
Actual:
86 | 63 0.00
Average:
81 | 61 0.15
Scattered Clouds
Actual:
84 | 65 0.00
Average:
80 | 61 0.13
Clear
Actual:
90 | 64 0.00
Average:
80 | 61 0.14
Partly Cloudy
Actual:
92 | 71 0.00
Average:
80 | 61 0.14
 

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
Aug high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 90 79 68 67 64 60 90 65 40 29.97 29.92 29.86 10 10 10 9 4 - 0.00  
2 93 80 66 67 63 60 81 60 38 29.89 29.85 29.81 10 10 10 15 7 24 0.00  
3 95 83 71 73 67 59 93 63 32 29.89 29.86 29.83 10 9 6 16 6 23 0.00  
4 93 82 71 73 70 67 93 71 49 29.92 29.86 29.75 10 9 1 41 6 53 0.37 Rain , Thunderstorm
5 84 75 66 70 60 49 93 62 31 30.16 30.03 29.88 10 10 10 17 9 25 0.00  
6 85 74 62 62 56 49 93 62 31 30.17 30.09 29.99 10 10 10 13 4 17 0.00  
7 92 77 62 67 59 56 78 56 34 29.99 29.94 29.88 10 10 10 17 8 22 0.00  
8 84 78 72 71 64 57 87 65 43 30.00 29.96 29.93 10 10 10 14 9 26 T Rain
9 75 69 63 64 63 59 93 77 61 29.94 29.89 29.85 10 10 5 20 10 24 0.05 Rain
10 76 69 61 63 57 47 93 66 38 29.95 29.89 29.83 10 9 5 25 14 41 0.18 Rain , Thunderstorm
11 78 67 56 56 52 48 77 59 40 30.01 29.97 29.94 10 10 10 18 9 24 0.00  
12 76 66 55 58 54 49 93 66 38 30.03 30.00 29.96 10 10 10 10 4 15 T  
13 69 65 60 63 61 56 100 84 68 29.99 29.97 29.94 10 7 2 14 3 16 0.40 Rain
14 84 70 56 63 60 55 100 70 40 29.95 29.92 29.89 10 8 3 14 5 18 T Rain
15 85 75 65 64 61 57 93 67 40 29.96 29.91 29.87 10 10 10 14 6 18 T  
16 76 69 62 68 62 54 93 74 54 29.93 29.85 29.78 10 8 1 23 11 29 0.39 Rain , Thunderstorm
17 76 67 58 54 51 46 80 58 36 30.01 29.98 29.94 10 10 10 14 7 26 0.00  
18 77 65 53 55 51 46 100 67 33 30.04 29.99 29.93 10 10 10 14 5 25 0.00  
19 79 70 60 53 50 46 72 52 32 29.97 29.94 29.90 10 10 10 14 4 21 0.00  
20 74 66 58 61 56 50 87 67 46 30.01 29.97 29.93 10 10 9 17 6 23 0.08 Rain , Thunderstorm
21 79 66 53 57 51 45 93 63 32 30.09 30.06 30.01 10 10 9 12 5 17 0.00  
22 85 70 54 55 51 48 89 59 29 30.13 30.08 30.02 10 10 10 15 6 23 0.00  
23 92 78 64 60 56 54 68 49 30 30.12 30.05 30.00 10 10 10 16 8 21 0.03 Rain
24 94 79 64 59 57 54 73 51 28 30.04 30.00 29.95 10 10 10 16 9 21 0.00  
25 93 80 66 61 57 53 76 52 28 30.05 30.01 29.99 10 10 10 20 8 28 0.00  
26 79 73 66 72 67 60 100 81 62 30.07 30.02 29.97 10 8 2 22 7 26 0.57 Rain
27 88 77 66 70 62 52 100 65 29 30.08 30.03 29.98 10 9 5 20 6 24 0.00  
28 86 75 63 67 61 54 93 65 37 30.14 30.09 30.05 10 10 10 15 5 30 0.00  
29 84 75 65 64 59 54 87 62 37 30.10 30.05 30.00 10 10 10 13 6 17 0.00  
30 90 77 64 64 60 57 87 62 36 30.05 30.00 29.93 10 10 10 20 11 23 0.00  
31 92 82 71 70 64 57 82 65 47 30.08 30.02 29.97 10 10 10 18 10 25 0.00