Weather History for Alton, IL

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Thursday, May 9, 2013

  Actual Average Record
Temperature  
Mean Temperature 65 °F -  
Max Temperature 72 °F 73 °F 87 °F (2003)
Min Temperature 59 °F 54 °F 48 °F (2012)
Growing Degree Days 15 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 78    
Maximum Humidity 88    
Minimum Humidity 68    
Precipitation  
Precipitation 0.03 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 4 mph (South)    
Max Wind Speed 17 mph    
Max Gust Speed -    
Visibility 10 miles    
Events Rain , Thunderstorm    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 09, 2013 Rise Set
Actual Time 5:53 AM CDT 8:00 PM CDT
Civil Twilight 5:23 AM CDT 8:30 PM CDT
Nautical Twilight 4:47 AM CDT 9:06 PM CDT
Astronomical Twilight 4:08 AM CDT 9:45 PM CDT
Moon 5:37 AM CDT (5/9) 7:55 PM CDT (5/9)
Length of Visible Light 15h 06m
Length of Day
14h 07m
Waning Crescent, 0% of the Moon is Illuminated
May 9
Waning Crescent
May 9
New
May 17
First Quarter
May 24
Full
May 31
Last Quarter

Hourly Weather History & Observations

Time (CDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:35 AM 64.0 °F 57.2 °F 78% 29.99 in 10.0 mi ESE 3.5 mph - N/A   Overcast
12:55 AM 64.6 °F 57.7 °F 78% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
1:35 AM 63.9 °F 57.7 °F 80% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
1:55 AM 63.5 °F 57.6 °F 81% 29.97 in 10.0 mi SE 5.8 mph - N/A   Overcast
2:55 AM 62.8 °F 57.7 °F 84% 29.97 in 10.0 mi Calm Calm - 0.01 in   Overcast
4:35 AM 62.6 °F 56.5 °F 80% 29.96 in 10.0 mi SE 3.5 mph - N/A   Overcast
4:55 AM 63.3 °F 56.5 °F 78% 29.96 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 63.7 °F 57.0 °F 79% 29.95 in 10.0 mi Calm Calm - N/A Thunderstorm Overcast
5:35 AM 63.7 °F 56.7 °F 78% 29.95 in 10.0 mi Calm Calm - 0.01 in Thunderstorm Overcast
6:50 AM 62.6 °F 59.0 °F 88% 29.95 in 10.0 mi SE 8.1 mph - N/A   Overcast
7:50 AM 64.4 °F 59.0 °F 83% 29.95 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
8:50 AM 68.0 °F 57.2 °F 68% 29.95 in 10.0 mi South 6.9 mph - N/A   Overcast
9:50 AM 68.0 °F 59.0 °F 73% 29.94 in 10.0 mi SSE 8.1 mph - N/A   Overcast
10:50 AM 68.0 °F 60.8 °F 78% 29.95 in 8.0 mi Variable 4.6 mph - N/A Rain Light Rain Showers
2:50 PM 68.0 °F 60.8 °F 78% 29.89 in 10.0 mi SSE 8.1 mph - N/A   Overcast
3:45 PM 69.8 °F 60.8 °F 73% 29.87 in 10.0 mi SSW 17.3 mph - N/A   Overcast
4:50 PM 71.6 °F 60.8 °F 69% 29.86 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
5:45 PM 71.6 °F 60.8 °F 69% 29.87 in 10.0 mi West 13.8 mph - N/A   Clear
6:45 PM 71.6 °F 60.8 °F 69% 29.86 in 10.0 mi West 13.8 mph - N/A   Clear
7:45 PM 68.0 °F 60.8 °F 78% 29.87 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:45 PM 64.4 °F 59.0 °F 83% 29.89 in 10.0 mi Calm Calm - N/A   Clear
9:45 PM 64.4 °F 59.0 °F 83% 29.91 in 10.0 mi North 9.2 mph - N/A   Clear
10:15 PM 64.2 °F 56.8 °F 77% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:55 PM 63.1 °F 55.9 °F 77% 29.90 in 10.0 mi Calm Calm - 0.01 in   Clear
11:15 PM 60.8 °F 55.2 °F 82% 29.90 in 10.0 mi Calm Calm - N/A   Clear
11:35 PM 59.5 °F 55.4 °F 86% 29.91 in 10.0 mi South 3.5 mph - N/A Thunderstorm Clear
11:55 PM 60.1 °F 56.5 °F 88% 29.91 in 10.0 mi Calm Calm - N/A   Clear