Weather History for Alton, IL

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Wednesday, February 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 45 °F -  
Max Temperature 55 °F 43 °F 59 °F (2011)
Min Temperature 35 °F 28 °F 5 °F (2014)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 31 °F    
Average Humidity 68    
Maximum Humidity 87    
Minimum Humidity 26    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 3 mph (WSW)    
Max Wind Speed 18 mph    
Max Gust Speed -    
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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Date:

Astronomy

Feb. 13, 2013 Rise Set
Actual Time 6:53 AM CST 5:35 PM CST
Civil Twilight 6:26 AM CST 6:03 PM CST
Nautical Twilight 5:54 AM CST 6:34 PM CST
Astronomical Twilight 5:23 AM CST 7:05 PM CST
Moon 8:25 AM CST (2/13) 9:35 PM CST (2/13)
Length of Visible Light 11h 37m
Length of Day
10h 42m
Waxing Crescent, 14% of the Moon is Illuminated
Feb 13
Waxing Crescent
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:55 AM 39.7 °F - 31.6 °F 73% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
1:15 AM 39.6 °F - 31.8 °F 74% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
1:35 AM 39.0 °F - 32.0 °F 76% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
1:55 AM 38.7 °F - 32.4 °F 78% 29.93 in 10.0 mi Calm Calm - N/A   Overcast
2:15 AM 38.5 °F - 32.0 °F 78% 29.92 in 10.0 mi Calm Calm - N/A   Overcast
2:35 AM 38.3 °F - 32.4 °F 79% 29.92 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM 38.3 °F - 32.0 °F 78% 29.91 in 10.0 mi Calm Calm - N/A   Overcast
3:15 AM 38.3 °F - 32.5 °F 80% 29.90 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 37.6 °F - 32.9 °F 83% 29.89 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 37.8 °F - 33.1 °F 83% 29.88 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 37.6 °F - 32.2 °F 81% 29.88 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 38.3 °F - 31.5 °F 76% 29.87 in 10.0 mi Calm Calm - N/A   Overcast
4:55 AM 37.6 °F - 32.4 °F 81% 29.87 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 37.4 °F 34.9 °F 32.0 °F 81% 29.87 in 10.0 mi SW 3.5 mph - N/A   Overcast
5:35 AM 37.0 °F 34.5 °F 32.2 °F 83% 29.87 in 10.0 mi WSW 3.5 mph - N/A   Overcast
5:55 AM 36.7 °F 34.1 °F 32.4 °F 84% 29.87 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
6:50 AM 35.6 °F 30.7 °F 32.0 °F 87% 29.88 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
7:50 AM 35.6 °F 30.7 °F 32.0 °F 87% 29.90 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
9:50 AM 44.6 °F 38.8 °F 28.4 °F 53% 29.89 in 10.0 mi WSW 11.5 mph - N/A   Partly Cloudy
10:50 AM 48.2 °F - 24.8 °F 40% 29.87 in 10.0 mi WSW 11.5 mph - N/A   Partly Cloudy
11:50 AM 51.8 °F - 23.0 °F 33% 29.85 in 10.0 mi WSW 11.5 mph - N/A   Clear
3:45 PM 55.4 °F - 21.2 °F 26% 29.81 in 10.0 mi WNW 18.4 mph - N/A   Clear
5:45 PM 48.2 °F - 37.4 °F 66% 29.83 in 10.0 mi WNW 11.5 mph - N/A   Clear
6:45 PM 44.6 °F 40.7 °F 26.6 °F 49% 29.84 in 10.0 mi West 6.9 mph - N/A   Clear
7:45 PM 42.8 °F 38.6 °F 26.6 °F 53% 29.85 in 10.0 mi West 6.9 mph - N/A   Clear
8:50 PM 42.8 °F - 26.6 °F 53% 29.85 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 43.0 °F 39.5 °F 26.6 °F 52% 29.86 in 10.0 mi SSW 5.8 mph - N/A   Clear
9:35 PM 43.0 °F 37.2 °F 28.6 °F 57% 29.86 in 10.0 mi SW 10.4 mph - N/A   Clear
9:50 PM 42.8 °F - 30.2 °F 61% 29.86 in 10.0 mi Calm Calm - N/A   Clear
9:55 PM 42.1 °F 37.1 °F 29.7 °F 61% 29.86 in 10.0 mi SW 8.1 mph - N/A   Clear
10:15 PM 41.2 °F 35.5 °F 30.6 °F 66% 29.86 in 10.0 mi SW 9.2 mph - N/A   Clear
10:35 PM 41.7 °F 36.7 °F 31.1 °F 66% 29.87 in 10.0 mi SW 8.1 mph - N/A   Clear
10:55 PM 41.0 °F 35.8 °F 32.2 °F 71% 29.86 in 10.0 mi SW 8.1 mph - N/A   Clear
11:15 PM 41.7 °F 35.6 °F 33.1 °F 71% 29.86 in 10.0 mi SSW 10.4 mph - N/A   Clear
11:55 PM 41.4 °F 35.7 °F 33.3 °F 73% 29.85 in 10.0 mi SSW 9.2 mph - N/A   Clear