Weather History for Alton, IL

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Monday, March 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 44 °F -  
Max Temperature 50 °F 51 °F 79 °F (2012)
Min Temperature 38 °F 35 °F 26 °F (2007)
Degree Days  
Heating Degree Days 20    
Moisture  
Dew Point 34 °F    
Average Humidity 81    
Maximum Humidity 93    
Minimum Humidity 40    
Precipitation  
Precipitation 0.09 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.78 in    
Wind  
Wind Speed 6 mph (NNW)    
Max Wind Speed 23 mph    
Max Gust Speed 29 mph    
Visibility 7 miles    
Events Rain    
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

Mar. 18, 2013 Rise Set
Actual Time 7:06 AM CDT 7:10 PM CDT
Civil Twilight 6:39 AM CDT 7:36 PM CDT
Nautical Twilight 6:08 AM CDT 8:08 PM CDT
Astronomical Twilight 5:37 AM CDT 8:39 PM CDT
Moon 11:09 AM CDT (3/18) 1:06 AM CDT (3/18)
Length of Visible Light 12h 57m
Length of Day
12h 04m
Waxing Crescent, 41% of the Moon is Illuminated
Mar 18
Waxing Crescent
Mar 19
First Quarter
Mar 27
Full
Apr 2
Last Quarter
Apr 10
New

Hourly Weather History & Observations

Time (CDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 39.2 °F 35.0 °F 36.5 °F 90% 29.79 in 7.0 mi ENE 5.8 mph - 0.03 in Rain Light Rain
12:35 AM 39.2 °F 35.9 °F 36.5 °F 90% 29.78 in 7.0 mi ENE 4.6 mph - 0.05 in   Drizzle
12:55 AM 39.2 °F 35.9 °F 36.5 °F 90% 29.78 in 5.0 mi ENE 4.6 mph - 0.07 in Rain Light Rain
1:15 AM 39.2 °F 37.0 °F 36.5 °F 90% 29.77 in 4.0 mi ENE 3.5 mph - 0.01 in Rain Light Rain
1:55 AM 39.2 °F 35.0 °F 36.5 °F 90% 29.73 in 7.0 mi ENE 5.8 mph - 0.02 in   Light Drizzle
2:15 AM 39.2 °F 35.9 °F 36.7 °F 91% 29.73 in 7.0 mi ENE 4.6 mph - N/A   Overcast
2:35 AM 39.2 °F 35.9 °F 36.9 °F 91% 29.73 in 10.0 mi ENE 4.6 mph - N/A   Overcast
2:55 AM 39.2 °F 35.9 °F 36.9 °F 91% 29.72 in 10.0 mi ENE 4.6 mph - N/A   Overcast
3:15 AM 39.2 °F 35.9 °F 36.9 °F 91% 29.71 in 10.0 mi NE 4.6 mph - N/A   Overcast
3:35 AM 39.2 °F 37.0 °F 36.9 °F 91% 29.70 in 7.0 mi NNE 3.5 mph - N/A   Overcast
3:55 AM 39.2 °F - 36.9 °F 91% 29.70 in 3.0 mi Calm Calm - N/A   Drizzle
4:15 AM 39.2 °F - 37.0 °F 92% 29.70 in 2.5 mi Calm Calm - N/A   Light Drizzle
4:35 AM 39.2 °F - 37.0 °F 92% 29.71 in 2.5 mi Calm Calm - N/A   Light Drizzle
4:55 AM 39.2 °F - 37.0 °F 92% 29.71 in 3.0 mi Calm Calm - N/A   Overcast
5:15 AM 39.2 °F - 37.0 °F 92% 29.71 in 2.0 mi Calm Calm - N/A   Overcast
5:35 AM 39.2 °F - 37.0 °F 92% 29.70 in 2.5 mi Calm Calm - N/A   Overcast
5:55 AM 39.2 °F - 37.0 °F 92% 29.69 in 3.0 mi Calm Calm - N/A   Overcast
6:15 AM 39.2 °F - 37.2 °F 93% 29.69 in 4.0 mi Calm Calm - N/A   Overcast
6:35 AM 39.2 °F - 37.2 °F 93% 29.70 in 5.0 mi Calm Calm - N/A   Overcast
6:50 AM 39.2 °F - 37.4 °F 93% 29.70 in 5.0 mi Calm Calm - N/A   Overcast
6:55 AM 39.2 °F - 37.4 °F 93% 29.69 in 5.0 mi Calm Calm - N/A   Overcast
7:50 AM 39.2 °F - 37.4 °F 93% 29.71 in 4.0 mi Calm Calm - N/A   Overcast
8:50 AM 39.2 °F 33.0 °F 37.4 °F 93% 29.71 in 4.0 mi West 9.2 mph - N/A   Overcast
10:50 AM 41.0 °F 34.3 °F 39.2 °F 93% 29.75 in 7.0 mi West 11.5 mph 17.3 mph N/A   Overcast
11:50 AM 41.0 °F 32.8 °F 39.2 °F 93% 29.77 in 10.0 mi West 16.1 mph 25.3 mph N/A   Overcast
12:50 PM 42.8 °F 35.1 °F 37.4 °F 81% 29.78 in 10.0 mi West 16.1 mph 25.3 mph N/A   Overcast
1:50 PM 46.4 °F 39.8 °F 39.2 °F 76% 29.78 in 10.0 mi West 16.1 mph - N/A   Overcast
2:50 PM 46.4 °F 39.2 °F 37.4 °F 71% 29.79 in 10.0 mi West 18.4 mph - N/A   Overcast
3:50 PM 46.4 °F 38.3 °F 37.4 °F 71% 29.80 in 10.0 mi West 23.0 mph - N/A   Overcast
4:51 PM 50.0 °F - 37.4 °F 62% 29.81 in 10.0 mi WNW 23.0 mph - N/A   Scattered Clouds
8:55 PM 46.4 °F 38.5 °F 23.0 °F 40% 29.89 in 10.0 mi West 21.9 mph 28.8 mph N/A   Clear
10:15 PM 43.9 °F 38.3 °F 23.0 °F 44% 29.96 in 10.0 mi NNW 10.4 mph - N/A   Clear
10:35 PM 42.3 °F 36.3 °F 22.3 °F 45% 29.98 in 10.0 mi NW 10.4 mph - N/A   Clear
10:55 PM 41.2 °F 36.0 °F 22.3 °F 47% 29.99 in 10.0 mi NNW 8.1 mph - N/A   Clear
11:15 PM 40.1 °F 36.1 °F 23.0 °F 51% 30.01 in 10.0 mi NW 5.8 mph - N/A   Clear
11:35 PM 39.2 °F 32.5 °F 22.6 °F 52% 30.01 in 10.0 mi WNW 10.4 mph - N/A   Clear
11:55 PM 38.7 °F 30.1 °F 21.2 °F 50% 30.02 in 10.0 mi WNW 15.0 mph 19.6 mph N/A   Clear