Weather History for Alton, IL

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Week of April 14, 2013 through April 20, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 81 °F 64 °F 49 °F
Mean Temperature 64 °F 53 °F 42 °F
Min Temperature 52 °F 43 °F 31 °F
Degree Days  
Heating Degree Days (base 65) 23 12 2 81
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 14 6 0 42
Dew Point  
Dew Point 64 °F 42 °F 16 °F
Precipitation  
Precipitation 0.20 in 0.07 in 0.00 in 0.52 in
Snowdepth - - - -
Wind  
Wind 30 mph 12 mph 0 mph
Gust Wind 50 mph 26 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.35 in 29.92 in 29.58 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Apr. 18, 2013 Rise Set
Actual Time 6:19 AM CDT 7:40 PM CDT
Civil Twilight 5:51 AM CDT 8:08 PM CDT
Nautical Twilight 5:18 AM CDT 8:41 PM CDT
Astronomical Twilight 4:43 AM CDT 9:16 PM CDT
Moon 12:31 PM CDT (4/18) 1:54 AM CDT (4/18)
Length of Visible Light 14h 16m
Length of Day
13h 21m
First Quarter, 52% of the Moon is Illuminated
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New
May 17
First Quarter

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Apr high avg low high avg low high avg low high avg low high avg low high avg high sum  
14 76 60 45 46 40 36 76 57 24 29.92 29.80 29.64 10 10 10 28 11 41 0.00  
15 68 60 52 59 51 45 94 72 50 29.91 29.82 29.75 10 10 6 21 12 26 0.02 Rain , Thunderstorm
16 50 48 44 49 44 41 93 87 79 30.17 30.06 29.90 10 8 2 16 9 23 0.11 Rain , Thunderstorm
17 81 64 49 64 51 44 94 80 57 30.14 30.00 29.69 10 7 0 23 8 34 0.20  
18 74 58 41 64 57 32 94 77 63 29.76 29.65 29.58 10 8 1 26 19 50 0.09 Rain , Thunderstorm
19 49 42 36 32 26 19 71 56 34 30.06 29.86 29.75 10 10 10 30 20 41 0.07  
20 53 42 31 31 26 16 88 58 22 30.35 30.22 30.07 10 10 10 12 5 - 0.03