Weather History for Alton, IL

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Wednesday, May 8, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F -  
Max Temperature 80 °F 72 °F 89 °F (2004)
Min Temperature 50 °F 54 °F 46 °F (1997)
Degree Days  
Heating Degree Days 1    
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 77    
Maximum Humidity 93    
Minimum Humidity 26    
Precipitation  
Precipitation 0.03 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.01 in    
Wind  
Wind Speed 1 mph (SW)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 9 miles    
Events      
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. 08, 2013 Rise Set
Actual Time 5:54 AM CDT 7:59 PM CDT
Civil Twilight 5:24 AM CDT 8:29 PM CDT
Nautical Twilight 4:48 AM CDT 9:05 PM CDT
Astronomical Twilight 4:09 AM CDT 9:44 PM CDT
Moon 5:01 AM CDT (5/8) 6:58 PM CDT (5/8)
Length of Visible Light 15h 04m
Length of Day
14h 05m
Waning Crescent, 2% of the Moon is Illuminated
May 8
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
12:15 AM 55.9 °F 52.5 °F 88% 30.00 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 55.6 °F 52.5 °F 89% 30.00 in 10.0 mi Calm Calm - 0.01 in   Clear
12:55 AM 54.5 °F 51.3 °F 89% 30.00 in 10.0 mi Calm Calm - 0.01 in   Clear
1:15 AM 54.5 °F 51.8 °F 91% 29.99 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 54.9 °F 52.2 °F 91% 29.99 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 53.4 °F 50.7 °F 91% 29.98 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 53.4 °F 51.1 °F 92% 29.98 in 7.0 mi Calm Calm - N/A   Clear
2:35 AM 52.7 °F 50.2 °F 91% 29.99 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 52.9 °F 50.4 °F 91% 29.99 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 52.9 °F 50.4 °F 91% 29.99 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 53.2 °F 50.9 °F 92% 30.00 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 52.0 °F 49.8 °F 92% 30.00 in 7.0 mi Calm Calm - N/A   Clear
4:15 AM 52.3 °F 50.0 °F 92% 30.00 in 5.0 mi Calm Calm - N/A   Clear
4:35 AM 51.8 °F 49.3 °F 91% 30.00 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 50.9 °F 48.4 °F 91% 30.01 in 4.0 mi Calm Calm - N/A   Clear
5:15 AM 51.3 °F 49.1 °F 92% 30.01 in 3.0 mi Calm Calm - N/A   Clear
5:35 AM 50.9 °F 48.7 °F 92% 30.01 in 7.0 mi Calm Calm - 0.01 in   Clear
5:55 AM 51.3 °F 49.1 °F 92% 30.01 in 5.0 mi Calm Calm - 0.01 in   Clear
6:15 AM 50.2 °F 47.8 °F 92% 30.02 in 7.0 mi Calm Calm - N/A   Scattered Clouds
6:35 AM 51.6 °F 49.6 °F 93% 30.03 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
6:50 AM 53.6 °F 50.0 °F 88% 30.03 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:55 AM 53.8 °F 51.6 °F 92% 30.04 in 7.0 mi Calm Calm - N/A   Overcast
7:50 AM 60.8 °F 57.2 °F 88% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:50 AM 66.2 °F 57.2 °F 73% 30.05 in 10.0 mi Calm Calm - N/A   Clear
9:50 AM 71.6 °F 55.4 °F 57% 30.05 in 10.0 mi Calm Calm - N/A   Clear
10:50 AM 75.2 °F 53.6 °F 47% 30.05 in 10.0 mi NW 4.6 mph - N/A   Scattered Clouds
11:55 AM 77.0 °F 44.6 °F 32% 30.04 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
3:50 PM 78.8 °F 41.0 °F 26% 29.99 in 10.0 mi SSE 8.1 mph - N/A   Scattered Clouds
4:45 PM 77.0 °F 41.0 °F 28% 29.98 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
5:45 PM 77.0 °F 46.4 °F 34% 29.98 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
6:47 PM 75.2 °F 50.0 °F 41% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
7:45 PM 71.6 °F 50.0 °F 46% 30.01 in 10.0 mi WNW 11.5 mph - N/A   Overcast
8:45 PM 68.0 °F 55.4 °F 64% 30.01 in 10.0 mi WNW 9.2 mph - N/A   Overcast
9:45 PM 66.2 °F 57.2 °F 73% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
10:15 PM 66.4 °F 58.6 °F 76% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
10:55 PM 64.6 °F 59.0 °F 82% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
11:15 PM 65.5 °F 58.3 °F 77% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
11:35 PM 65.8 °F 58.5 °F 77% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
11:55 PM 65.7 °F 58.1 °F 77% 30.00 in 10.0 mi Calm Calm - 0.01 in   Overcast