Weather History for Alton, IL

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Week of January 27, 2013 through February 2, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 69 °F 50 °F 30 °F
Mean Temperature 62 °F 41 °F 20 °F
Min Temperature 55 °F 31 °F 11 °F
Degree Days  
Heating Degree Days (base 65) 44 24 4 171
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 12 3 0 22
Dew Point  
Dew Point 61 °F 31 °F -3 °F
Precipitation  
Precipitation 0.33 in 0.09 in 0.00 in 0.65 in
Snowdepth - - - -
Wind  
Wind 28 mph 12 mph 0 mph
Gust Wind 40 mph 24 mph 9 mph
Sea Level Pressure  
Sea Level Pressure 30.49 in 29.99 in 29.38 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Jan. 28, 2013 Rise Set
Actual Time 7:09 AM CST 5:17 PM CST
Civil Twilight 6:41 AM CST 5:45 PM CST
Nautical Twilight 6:09 AM CST 6:17 PM CST
Astronomical Twilight 5:37 AM CST 6:49 PM CST
Moon 7:10 PM CST (1/28) 7:36 AM CST (1/28)
Length of Visible Light 11h 04m
Length of Day
10h 07m
Full, 98% of the Moon is Illuminated
Jan 28
Full
Feb 3
Last Quarter
Feb 10
New
Feb 17
First Quarter
Feb 25
Full

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
27 51 40 29 48 31 18 93 77 60 30.32 30.16 29.98 10 7 2 20 9 25 0.00 Rain
28 69 60 51 61 55 49 90 86 73 29.98 29.93 29.87 10 8 5 18 10 22 0.00  
29 68 62 55 61 58 53 94 86 78 29.86 29.69 29.45 10 9 2 23 14 28 0.33 Rain
30 55 43 30 53 37 19 94 79 60 29.90 29.59 29.38 10 10 7 28 14 40 0.31 Rain , Snow
31 33 24 14 23 15 -3 73 61 47 30.38 30.06 29.91 10 9 4 23 16 30 0.00 Snow
2013 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 30 20 11 14 3 -2 57 48 31 30.49 30.36 30.23 10 10 7 24 14 33 0.00 Snow
2 42 36 30 28 17 12 89 53 39 30.23 30.12 30.06 10 9 1 18 10 29 0.01 Snow