Weather History for Decatur, IL

Change the Weather History Date:

Month of August, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 98 °F 85 °F 75 °F
Mean Temperature 85 °F 74 °F 62 °F
Min Temperature 77 °F 62 °F 48 °F
Degree Days  
Heating Degree Days (base 65) 3 0 0 6
Cooling Degree Days (base 65) 20 9 0 274
Growing Degree Days (base 50) 35 23 10 720
Dew Point  
Dew Point 75 °F 63 °F 46 °F
Precipitation  
Precipitation 0.02 in 0.00 in 0.00 in 0.02 in
Snowdepth - - - -
Wind  
Wind 23 mph 5 mph 0 mph
Gust Wind 29 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.28 in 30.05 in 29.71 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. 13, 2013 Rise Set
Actual Time 6:05 AM CDT 7:54 PM CDT
Civil Twilight 5:36 AM CDT 8:23 PM CDT
Nautical Twilight 5:01 AM CDT 8:58 PM CDT
Astronomical Twilight 4:23 AM CDT 9:35 PM CDT
Moon 12:59 PM CDT (8/13) 11:29 PM CDT (8/13)
Length of Visible Light 14h 46m
Length of Day
13h 48m
Waxing Crescent, 42% of the Moon is Illuminated
Aug 13
Waxing Crescent
Aug 14
First Quarter
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New

Weather History Calendar

Precipitation Actual month total 0.02 Normal Month Total: 3.65
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
84 | 63 0.00
Average:
86 | 64 0.09
Rain
Actual:
82 | 64 T
Average:
85 | 64 0.08
Rain
Actual:
83 | 62 T
Average:
85 | 64 0.08
Scattered Clouds
Actual:
79 | 56 0.00
Average:
85 | 64 0.09
Partly Cloudy
Actual:
79 | 56 0.00
Average:
85 | 64 0.09
Partly Cloudy
Actual:
84 | 68 0.00
Average:
85 | 64 0.09
Thunderstorm
Actual:
84 | 69 T
Average:
85 | 63 0.10
Fog
Actual:
80 | 65 0.00
Average:
85 | 63 0.09
Clear
Actual:
82 | 59 0.00
Average:
85 | 63 0.09
Scattered Clouds
Actual:
84 | 64 0.00
Average:
85 | 63 0.09
Clear
Actual:
83 | 57 0.00
Average:
85 | 63 0.10
Thunderstorm
Actual:
83 | 64 0.02
Average:
85 | 63 0.10
Scattered Clouds
Actual:
78 | 53 0.00
Average:
85 | 63 0.10
Scattered Clouds
Actual:
75 | 48 0.00
Average:
85 | 63 0.11
Clear
Actual:
75 | 49 0.00
Average:
85 | 63 0.11
Scattered Clouds
Actual:
79 | 58 0.00
Average:
84 | 63 0.12
Clear
Actual:
81 | 55 0.00
Average:
84 | 63 0.13
Clear
Actual:
83 | 56 0.00
Average:
84 | 63 0.14
Scattered Clouds
Actual:
85 | 57 0.00
Average:
84 | 63 0.15
Scattered Clouds
Actual:
87 | 58 0.00
Average:
84 | 63 0.15
Clear
Actual:
88 | 63 0.00
Average:
84 | 63 0.14
Thunderstorm
Actual:
88 | 69 T
Average:
84 | 62 0.14
Thunderstorm
Actual:
86 | 63 0.00
Average:
84 | 62 0.14
Clear
Actual:
87 | 59 0.00
Average:
84 | 62 0.14
Clear
Actual:
87 | 61 0.00
Average:
84 | 62 0.14
Scattered Clouds
Actual:
91 | 69 0.00
Average:
84 | 62 0.15
Clear
Actual:
92 | 77 0.00
Average:
84 | 62 0.14
Scattered Clouds
Actual:
95 | 74 0.00
Average:
84 | 61 0.14
Fog
Actual:
87 | 68 0.00
Average:
83 | 61 0.14
Scattered Clouds
Actual:
96 | 67 0.00
Average:
83 | 61 0.14
Clear
Actual:
98 | 71 T
Average:
83 | 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

2013 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 84 74 63 66 61 57 93 68 43 30.06 30.02 29.98 10 9 4 15 6 21 0.00  
2 82 73 64 71 66 61 87 78 69 29.99 29.96 29.93 10 9 5 16 9 23 T Rain
3 83 73 62 70 65 58 93 72 51 30.12 30.02 29.94 10 9 5 15 6 21 T Rain
4 79 68 56 62 57 54 93 70 46 30.19 30.15 30.11 10 10 9 7 2 17 0.00  
5 79 68 56 64 60 54 93 74 54 30.11 30.01 29.90 10 10 7 17 7 28 0.00  
6 84 76 68 71 68 64 93 77 61 29.94 29.90 29.86 10 5 2 12 6 17 0.00  
7 84 77 69 73 70 66 97 83 69 29.92 29.87 29.83 10 7 0 15 5 22 T Fog , Rain , Thunderstorm
8 80 73 65 71 68 62 97 86 74 29.98 29.93 29.90 10 5 0 12 6 24 0.00 Fog
9 82 71 59 65 60 53 93 65 37 30.07 30.01 29.96 10 10 8 9 3 14 0.00  
10 84 74 64 65 61 57 84 62 40 30.13 30.10 30.07 10 10 6 13 6 17 0.00  
11 83 70 57 64 58 53 84 63 42 30.15 30.11 30.06 10 10 7 9 2 14 0.00  
12 83 74 64 70 64 60 90 74 58 30.08 29.98 29.90 10 10 9 16 6 21 0.02 Rain , Thunderstorm
13 78 66 53 67 58 49 90 66 41 30.16 30.04 29.92 10 9 3 16 9 21 0.00  
14 75 62 48 53 50 46 93 67 41 30.23 30.19 30.15 10 10 10 12 4 17 0.00  
15 75 62 49 56 50 47 93 66 38 30.20 30.16 30.11 10 10 10 13 3 17 0.00  
16 79 69 58 58 55 52 87 63 39 30.18 30.15 30.12 10 10 10 16 5 23 0.00  
17 81 68 55 58 55 52 93 68 42 30.22 30.18 30.14 10 10 8 10 4 14 0.00  
18 83 70 56 65 59 53 93 70 46 30.19 30.14 30.10 10 8 5 9 3 14 0.00  
19 85 71 57 65 62 55 97 73 48 30.14 30.11 30.06 10 8 4 10 2 - 0.00  
20 87 73 58 66 62 55 93 69 45 30.14 30.10 30.06 10 8 2 10 3 15 0.00  
21 88 76 63 68 65 61 93 70 46 30.13 30.09 30.03 10 7 3 13 5 18 0.00  
22 88 79 69 71 66 64 90 73 55 30.10 30.07 30.04 10 9 6 10 6 14 T Thunderstorm
23 86 75 63 67 64 61 93 71 48 30.14 30.11 30.09 10 9 2 12 5 16 0.00 Thunderstorm
24 87 73 59 66 62 57 93 68 43 30.25 30.20 30.14 10 7 2 10 4 16 0.00  
25 87 74 61 64 61 58 97 69 40 30.28 30.24 30.20 10 9 5 13 5 17 0.00  
26 91 80 69 72 68 62 90 70 50 30.23 30.15 30.06 10 7 2 13 7 16 0.00  
27 92 84 77 73 70 66 79 62 44 30.08 30.03 29.96 10 9 6 13 9 - 0.00  
28 95 85 74 74 68 64 88 65 41 30.00 29.97 29.95 10 10 4 17 9 25 0.00  
29 87 78 68 73 70 67 94 76 57 30.07 30.02 29.98 10 5 0 10 5 17 0.00 Fog
30 96 82 67 75 70 60 93 70 46 29.98 29.90 29.82 10 8 3 23 6 29 0.00  
31 98 85 71 74 70 61 87 66 45 29.84 29.78 29.71 10 10 9 18 8 23 T