Weather History for Alton, IL

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Tuesday, April 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 71 °F -  
Max Temperature 83 °F 69 °F 89 °F (2001)
Min Temperature 60 °F 51 °F 41 °F (2008)
Cooling Degree Days 6    
Growing Degree Days 21 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 66    
Maximum Humidity 80    
Minimum Humidity 30    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.87 in    
Wind  
Wind Speed 10 mph (South)    
Max Wind Speed 18 mph    
Max Gust Speed 28 mph    
Visibility 10 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

Apr. 30, 2013 Rise Set
Actual Time 6:03 AM CDT 7:51 PM CDT
Civil Twilight 5:34 AM CDT 8:20 PM CDT
Nautical Twilight 4:59 AM CDT 8:55 PM CDT
Astronomical Twilight 4:22 AM CDT 9:33 PM CDT
Moon 12:14 AM CDT (4/30) 10:32 AM CDT (4/30)
Length of Visible Light 14h 46m
Length of Day
13h 48m
Waning Gibbous, 70% of the Moon is Illuminated
Apr 30
Waning Gibbous
May 2
Last Quarter
May 9
New
May 17
First Quarter
May 24
Full

Hourly Weather History & Observations

Time (CDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 64.8 °F - 57.7 °F 78% 29.83 in 10.0 mi South 11.5 mph - N/A   Clear
12:35 AM 64.4 °F - 57.6 °F 78% 29.83 in 10.0 mi South 11.5 mph - N/A   Clear
12:55 AM 64.6 °F - 57.6 °F 78% 29.83 in 10.0 mi South 10.4 mph - N/A   Clear
1:15 AM 64.4 °F - 57.4 °F 78% 29.83 in 10.0 mi South 11.5 mph - N/A   Clear
1:35 AM 64.0 °F - 57.2 °F 78% 29.83 in 10.0 mi South 11.5 mph - N/A   Clear
1:55 AM 64.4 °F - 57.2 °F 77% 29.82 in 10.0 mi South 12.7 mph - N/A   Clear
2:15 AM 64.4 °F - 56.8 °F 76% 29.82 in 10.0 mi South 10.4 mph - N/A   Clear
2:35 AM 64.2 °F - 56.5 °F 76% 29.82 in 10.0 mi South 11.5 mph - N/A   Clear
2:55 AM 63.9 °F - 56.3 °F 76% 29.83 in 10.0 mi South 9.2 mph 16.1 mph N/A   Clear
3:15 AM 63.7 °F - 56.1 °F 76% 29.83 in 10.0 mi South 9.2 mph - N/A   Clear
3:35 AM 63.5 °F - 55.9 °F 76% 29.83 in 10.0 mi South 10.4 mph - N/A   Clear
3:55 AM 63.5 °F - 55.8 °F 76% 29.83 in 10.0 mi South 8.1 mph - N/A   Clear
4:15 AM 62.8 °F - 55.4 °F 77% 29.83 in 10.0 mi South 9.2 mph - N/A   Clear
4:35 AM 62.1 °F - 55.4 °F 79% 29.83 in 10.0 mi South 10.4 mph - N/A   Clear
4:55 AM 61.7 °F - 55.4 °F 80% 29.83 in 10.0 mi South 9.2 mph - N/A   Clear
5:15 AM 61.2 °F - 54.7 °F 79% 29.84 in 10.0 mi South 6.9 mph - N/A   Clear
5:35 AM 60.8 °F - 54.5 °F 80% 29.85 in 10.0 mi SSE 5.8 mph - N/A   Clear
5:55 AM 60.8 °F - 54.5 °F 80% 29.85 in 10.0 mi SSE 8.1 mph - N/A   Clear
6:15 AM 60.8 °F - 54.5 °F 80% 29.86 in 10.0 mi SSE 6.9 mph - N/A   Clear
6:35 AM 61.3 °F - 54.5 °F 78% 29.87 in 10.0 mi SSE 6.9 mph - N/A   Clear
6:50 AM 62.6 °F - 55.4 °F 77% 29.87 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
6:55 AM 62.6 °F - 54.7 °F 75% 29.87 in 10.0 mi SSE 6.9 mph - N/A   Clear
7:50 AM 64.4 °F - 55.4 °F 73% 29.88 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
8:50 AM 68.0 °F - 57.2 °F 68% 29.90 in 10.0 mi SSW 12.7 mph - N/A   Mostly Cloudy
9:50 AM 71.6 °F - 59.0 °F 64% 29.90 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
10:50 AM 75.2 °F - 59.0 °F 57% 29.90 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
11:50 AM 77.0 °F - 57.2 °F 50% 29.90 in 10.0 mi South 9.2 mph - N/A   Scattered Clouds
12:55 PM 80.6 °F 80.3 °F 53.6 °F 39% 29.88 in 10.0 mi South 11.5 mph - N/A   Partly Cloudy
1:50 PM 82.4 °F - 48.2 °F 30% 29.87 in 10.0 mi South 13.8 mph - N/A   Scattered Clouds
2:50 PM 82.4 °F - 51.8 °F 35% 29.87 in 10.0 mi South 18.4 mph - N/A   Scattered Clouds
3:50 PM 82.4 °F - 48.2 °F 30% 29.85 in 10.0 mi South 18.4 mph - N/A   Scattered Clouds
4:50 PM 82.4 °F - 48.2 °F 30% 29.86 in 10.0 mi SSE 17.3 mph 27.6 mph N/A   Scattered Clouds
10:15 PM 71.2 °F - 49.5 °F 46% 29.96 in 10.0 mi SSE 9.2 mph - N/A   Clear
10:35 PM 70.0 °F - 50.0 °F 49% 29.96 in 10.0 mi SSE 9.2 mph - N/A   Clear
10:55 PM 68.9 °F - 50.0 °F 51% 29.96 in 10.0 mi SSE 8.1 mph - N/A   Clear
11:15 PM 67.8 °F - 50.0 °F 53% 29.96 in 10.0 mi SSE 5.8 mph - N/A   Clear
11:35 PM 67.1 °F - 50.0 °F 54% 29.96 in 10.0 mi SSE 5.8 mph - N/A   Clear
11:55 PM 65.8 °F - 50.9 °F 58% 29.96 in 10.0 mi SSE 5.8 mph - N/A   Clear