Weather History for Decatur, IL

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Month of May, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 87 °F 75 °F 57 °F
Mean Temperature 78 °F 65 °F 49 °F
Min Temperature 69 °F 54 °F 36 °F
Degree Days  
Heating Degree Days (base 65) 16 4 0 116
Cooling Degree Days (base 65) 13 3 0 102
Growing Degree Days (base 50) 28 14 0 445
Dew Point  
Dew Point 72 °F 56 °F 27 °F
Precipitation  
Precipitation 1.09 in 0.25 in 0.00 in 6.63 in
Snowdepth - - - -
Wind  
Wind 41 mph 10 mph 0 mph
Gust Wind 58 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.43 in 29.97 in 29.66 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

May. 15, 2013 Rise Set
Actual Time 5:40 AM CDT 8:03 PM CDT
Civil Twilight 5:09 AM CDT 8:34 PM CDT
Nautical Twilight 4:32 AM CDT 9:12 PM CDT
Astronomical Twilight 3:50 AM CDT 9:54 PM CDT
Moon 10:15 AM CDT (5/15) No Moon Set
Length of Visible Light 15h 24m
Length of Day
14h 23m
Waxing Crescent, 27% of the Moon is Illuminated
May 15
Waxing Crescent
May 17
First Quarter
May 24
Full
May 31
Last Quarter
Jun 8
New

Weather History Calendar

Precipitation Actual month total 6.63 Normal Month Total: 4.29
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
81 | 52 0.00
Average:
70 | 47 0.16
Thunderstorm
Actual:
78 | 50 0.52
Average:
70 | 47 0.16
Rain
Actual:
69 | 47 0.24
Average:
70 | 48 0.16
Rain
Actual:
60 | 51 0.27
Average:
71 | 48 0.16
Rain
Actual:
66 | 53 0.24
Average:
71 | 48 0.17
Rain
Actual:
69 | 52 T
Average:
71 | 48 0.15
Partly Cloudy
Actual:
78 | 52 0.00
Average:
72 | 49 0.15
Clear
Actual:
81 | 50 0.00
Average:
72 | 49 0.15
Thunderstorm
Actual:
68 | 58 1.04
Average:
72 | 49 0.14
Mostly Cloudy
Actual:
66 | 50 T
Average:
73 | 50 0.14
Rain
Actual:
65 | 46 T
Average:
73 | 50 0.14
Clear
Actual:
58 | 40 0.00
Average:
73 | 50 0.14
Clear
Actual:
68 | 36 0.00
Average:
74 | 50 0.14
Clear
Actual:
87 | 53 0.00
Average:
74 | 51 0.14
Thunderstorm
Actual:
87 | 69 0.10
Average:
74 | 51 0.15
Rain
Actual:
80 | 60 0.11
Average:
74 | 51 0.14
Partly Cloudy
Actual:
78 | 56 0.00
Average:
75 | 52 0.14
Fog
Actual:
81 | 58 0.00
Average:
75 | 52 0.14
Fog
Actual:
87 | 58 0.00
Average:
75 | 52 0.15
Thunderstorm
Actual:
86 | 63 1.09
Average:
75 | 53 0.14
Thunderstorm
Actual:
81 | 63 0.10
Average:
76 | 53 0.14
Rain
Actual:
76 | 61 0.02
Average:
76 | 53 0.14
Rain
Actual:
62 | 44 0.01
Average:
76 | 54 0.14
Clear
Actual:
69 | 39 0.00
Average:
76 | 54 0.14
Thunderstorm
Actual:
57 | 45 0.31
Average:
77 | 54 0.12
Thunderstorm
Actual:
66 | 52 0.56
Average:
77 | 55 0.12
Thunderstorm
Actual:
78 | 60 0.87
Average:
77 | 55 0.11
Thunderstorm
Actual:
82 | 64 0.01
Average:
78 | 55 0.10
Thunderstorm
Actual:
86 | 65 T
Average:
78 | 56 0.10
Thunderstorm
Actual:
84 | 68 0.37
Average:
78 | 56 0.11
Thunderstorm
Actual:
78 | 64 0.77
Average:
78 | 56 0.11
 

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
May high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 81 67 52 59 57 52 93 69 45 30.11 30.07 29.98 10 10 10 16 6 20 0.00  
2 78 64 50 65 59 50 100 80 60 30.13 30.09 30.03 10 7 2 18 7 22 0.52 Rain , Thunderstorm
3 69 58 47 63 53 46 100 87 73 30.06 29.94 29.80 10 7 3 32 13 45 0.24 Rain
4 60 56 51 59 55 51 100 95 90 30.02 29.94 29.85 10 9 5 23 7 29 0.27 Rain
5 66 60 53 58 55 52 100 87 73 30.01 29.97 29.91 10 8 3 18 10 25 0.24 Rain
6 69 61 52 60 56 52 100 84 68 29.99 29.96 29.93 10 10 4 14 5 17 T Rain
7 78 65 52 58 54 48 93 68 42 30.03 29.99 29.96 10 10 10 14 5 18 0.00  
8 81 66 50 60 55 51 100 70 39 30.04 30.00 29.97 10 8 2 10 3 23 0.00  
9 68 63 58 65 61 54 100 90 80 30.03 29.94 29.83 10 7 0 17 6 22 1.04 Fog , Rain , Thunderstorm
10 66 58 50 61 54 50 97 85 73 29.98 29.92 29.83 10 9 6 18 10 23 T  
11 65 56 46 54 45 31 93 65 36 30.12 30.00 29.94 10 9 5 29 11 40 T Rain
12 58 49 40 35 31 27 67 51 35 30.20 30.16 30.12 10 10 10 22 11 30 0.00  
13 68 52 36 44 39 35 92 63 34 30.22 30.15 30.07 10 10 10 15 7 21 0.00  
14 87 70 53 64 55 41 71 57 43 30.04 29.86 29.75 10 10 10 22 15 28 0.00  
15 87 78 69 68 61 53 84 65 46 29.88 29.84 29.79 10 10 5 21 13 30 0.10 Rain , Thunderstorm
16 80 70 60 66 61 54 90 69 48 29.96 29.90 29.81 10 10 3 20 7 25 0.11 Rain
17 78 67 56 65 61 57 100 81 62 29.99 29.97 29.93 10 8 2 16 6 21 0.00  
18 81 70 58 65 62 57 100 79 58 30.04 29.99 29.92 10 6 0 13 5 18 0.00 Fog
19 87 73 58 72 66 57 100 81 61 29.94 29.87 29.75 10 6 0 22 11 30 0.00 Fog
20 86 75 63 68 62 56 74 59 44 29.89 29.82 29.73 10 8 1 23 15 36 1.09 Rain , Thunderstorm
21 81 72 63 66 63 59 93 76 58 29.85 29.75 29.69 10 10 6 25 14 32 0.10 Rain , Thunderstorm
22 76 69 61 64 58 52 87 65 43 29.82 29.72 29.66 10 10 7 22 12 28 0.02 Rain
23 62 53 44 55 51 42 93 80 67 30.27 30.01 29.82 10 9 4 21 10 26 0.01 Rain
24 69 54 39 41 37 33 85 56 27 30.43 30.35 30.28 10 10 10 14 7 20 0.00  
25 57 51 45 50 44 37 83 67 51 30.42 30.31 30.24 10 10 6 15 8 18 0.31 Rain , Thunderstorm
26 66 59 52 60 57 52 93 89 84 30.28 30.19 30.04 10 9 4 18 11 23 0.56 Rain , Thunderstorm
27 78 69 60 70 62 57 100 87 74 30.10 29.95 29.80 10 8 0 30 9 40 0.87 Fog , Rain , Thunderstorm
28 82 73 64 71 65 62 93 79 65 29.90 29.85 29.80 10 10 9 26 14 38 0.01 Thunderstorm
29 86 76 65 69 64 59 81 68 55 29.97 29.93 29.88 10 10 10 26 13 38 T Rain , Thunderstorm
30 84 76 68 70 66 64 87 73 58 29.96 29.90 29.82 10 10 4 33 16 41 0.37 Rain , Thunderstorm
31 78 71 64 72 66 62 93 84 74 29.91 29.85 29.77 10 8 2 41 14 58 0.77 Rain , Thunderstorm