Weather History for Alton, IL

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Wednesday, December 5, 2012

  Actual Average Record
Temperature  
Mean Temperature 45 °F -  
Max Temperature 55 °F 45 °F 69 °F (1998)
Min Temperature 35 °F 31 °F 12 °F (2005)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 35 °F    
Average Humidity 78    
Maximum Humidity 93    
Minimum Humidity 44    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.29 in    
Wind  
Wind Speed 2 mph (East)    
Max Wind Speed 9 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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Astronomy

Dec. 05, 2012 Rise Set
Actual Time 7:03 AM CST 4:37 PM CST
Civil Twilight 6:34 AM CST 5:07 PM CST
Nautical Twilight 6:01 AM CST 5:40 PM CST
Astronomical Twilight 5:28 AM CST 6:13 PM CST
Moon 11:24 PM CST (12/5) 11:30 AM CST (12/5)
Length of Visible Light 10h 33m
Length of Day
9h 34m
Waning Gibbous, 59% of the Moon is Illuminated
Dec 5
Waning Gibbous
Dec 6
Last Quarter
Dec 13
New
Dec 19
First Quarter
Dec 28
Full

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 41.2 °F - 38.8 °F 91% 30.30 in 7.0 mi Calm Calm - N/A   Clear
12:35 AM 38.5 °F - 36.0 °F 91% 30.30 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 38.1 °F - 35.6 °F 91% 30.30 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 37.4 °F - 35.4 °F 93% 30.30 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 37.0 °F - 34.9 °F 92% 30.31 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 37.8 °F - 35.6 °F 92% 30.31 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 37.8 °F - 35.8 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 36.9 °F - 34.7 °F 92% 30.33 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 36.9 °F - 34.7 °F 92% 30.33 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 36.7 °F - 34.5 °F 92% 30.33 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 36.1 °F - 34.2 °F 93% 30.33 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 35.6 °F - 33.6 °F 92% 30.34 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 36.0 °F - 33.4 °F 91% 30.34 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 38.5 °F 36.1 °F 35.2 °F 88% 30.34 in 10.0 mi North 3.5 mph - N/A   Clear
4:55 AM 40.1 °F 36.9 °F 35.2 °F 83% 30.34 in 10.0 mi North 4.6 mph - N/A   Clear
5:15 AM 40.8 °F - 34.3 °F 78% 30.34 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 39.0 °F - 33.3 °F 80% 30.35 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 37.6 °F - 33.6 °F 86% 30.35 in 10.0 mi Calm Calm - N/A   Clear
6:50 AM 37.4 °F - 32.0 °F 81% 30.36 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:50 AM 44.6 °F 40.7 °F 35.6 °F 71% 30.39 in 10.0 mi ENE 6.9 mph - N/A   Partly Cloudy
9:50 AM 48.2 °F - 33.8 °F 58% 30.39 in 10.0 mi NE 9.2 mph - N/A   Partly Cloudy
10:50 AM 51.8 °F - 35.6 °F 54% 30.37 in 10.0 mi ESE 8.1 mph - N/A   Scattered Clouds
11:50 AM 53.6 °F - 35.6 °F 51% 30.34 in 10.0 mi East 9.2 mph - N/A   Scattered Clouds
12:50 PM 55.4 °F - 33.8 °F 44% 30.33 in 10.0 mi East 8.1 mph - N/A   Mostly Cloudy
1:50 PM 55.4 °F - 33.8 °F 44% 30.30 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
2:50 PM 55.4 °F - 33.8 °F 44% 30.28 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
3:50 PM 53.6 °F - 35.6 °F 51% 30.26 in 10.0 mi East 6.9 mph - N/A   Overcast
8:55 PM 41.0 °F 37.1 °F 33.8 °F 76% 30.21 in 10.0 mi East 5.8 mph - N/A   Overcast
9:15 PM 42.3 °F 38.6 °F 35.6 °F 77% 30.21 in 10.0 mi East 5.8 mph - N/A   Clear
9:35 PM 42.4 °F 38.8 °F 35.2 °F 76% 30.19 in 10.0 mi East 5.8 mph - N/A   Clear
9:55 PM 42.3 °F 37.9 °F 35.2 °F 76% 30.19 in 10.0 mi East 6.9 mph - N/A   Clear
10:15 PM 41.7 °F 38.0 °F 35.6 °F 79% 30.19 in 10.0 mi East 5.8 mph - N/A   Clear
10:35 PM 41.2 °F 36.0 °F 35.2 °F 79% 30.18 in 10.0 mi East 8.1 mph - N/A   Clear
10:55 PM 41.2 °F 37.3 °F 35.2 °F 79% 30.18 in 10.0 mi East 5.8 mph - N/A   Clear
11:15 PM 40.6 °F 37.5 °F 35.1 °F 80% 30.17 in 10.0 mi East 4.6 mph - N/A   Clear
11:35 PM 40.1 °F 35.3 °F 34.7 °F 81% 30.17 in 10.0 mi East 6.9 mph - N/A   Clear
11:55 PM 40.6 °F 36.7 °F 34.9 °F 80% 30.16 in 10.0 mi East 5.8 mph - N/A   Clear