Weather History for Alton, IL

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Wednesday, February 6, 2013

  Actual Average Record
Temperature  
Mean Temperature 40 °F -  
Max Temperature 51 °F 41 °F 59 °F (2009)
Min Temperature 29 °F 26 °F -2 °F (2014)
Degree Days  
Heating Degree Days 25    
Moisture  
Dew Point 31 °F    
Average Humidity 75    
Maximum Humidity 94    
Minimum Humidity 41    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.14 in    
Wind  
Wind Speed 3 mph (SE)    
Max Wind Speed 16 mph    
Max Gust Speed -    
Visibility 8 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. 06, 2013 Rise Set
Actual Time 7:01 AM CST 5:27 PM CST
Civil Twilight 6:33 AM CST 5:55 PM CST
Nautical Twilight 6:01 AM CST 6:27 PM CST
Astronomical Twilight 5:30 AM CST 6:58 PM CST
Moon 3:43 AM CST (2/6) 1:47 PM CST (2/6)
Length of Visible Light 11h 22m
Length of Day
10h 26m
Waning Crescent, 17% of the Moon is Illuminated
Feb 6
Waning Crescent
Feb 10
New
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter

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 34.7 °F - 29.8 °F 82% 30.14 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 34.2 °F - 29.3 °F 82% 30.15 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 34.2 °F - 30.6 °F 87% 30.15 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 33.4 °F - 30.6 °F 89% 30.16 in 7.0 mi Calm Calm - N/A   Clear
1:55 AM 32.0 °F - 29.3 °F 90% 30.16 in 7.0 mi Calm Calm - N/A   Clear
2:15 AM 32.0 °F - 29.1 °F 89% 30.17 in 7.0 mi Calm Calm - N/A   Clear
2:35 AM 32.0 °F - 29.8 °F 92% 30.17 in 7.0 mi Calm Calm - N/A   Clear
2:55 AM 30.6 °F - 28.2 °F 91% 30.16 in 5.0 mi Calm Calm - N/A   Clear
3:15 AM 30.6 °F - 28.0 °F 90% 30.15 in 5.0 mi Calm Calm - N/A   Clear
4:15 AM 30.6 °F - 28.4 °F 92% 30.17 in 5.0 mi Calm Calm - N/A   Clear
4:35 AM 30.4 °F - 28.4 °F 92% 30.18 in 4.0 mi Calm Calm - N/A   Clear
4:55 AM 30.6 °F - 28.4 °F 92% 30.18 in 3.0 mi Calm Calm - N/A   Clear
5:15 AM 30.2 °F - 28.2 °F 92% 30.19 in 2.5 mi Calm Calm - N/A   Clear
5:35 AM 29.7 °F - 28.0 °F 94% 30.19 in 1.8 mi Calm Calm - N/A   Mist
5:55 AM 29.1 °F - 27.3 °F 93% 30.19 in 5.0 mi Calm Calm - N/A   Clear
7:50 AM 32.0 °F - 30.2 °F 93% 30.21 in 6.0 mi Calm Calm - N/A   Clear
8:50 AM 37.4 °F 32.1 °F 33.8 °F 87% 30.23 in 10.0 mi South 6.9 mph - N/A   Clear
10:50 AM 44.6 °F 38.8 °F 30.2 °F 57% 30.25 in 10.0 mi SSE 11.5 mph - N/A   Clear
11:50 AM 46.4 °F 41.9 °F 30.2 °F 53% 30.23 in 10.0 mi SSE 9.2 mph - N/A   Clear
2:50 PM 51.8 °F - 28.4 °F 41% 30.14 in 10.0 mi SE 9.2 mph - N/A   Clear
3:45 PM 51.8 °F - 30.2 °F 44% 30.12 in 10.0 mi ESE 16.1 mph - N/A   Clear
4:50 PM 51.8 °F - 30.2 °F 44% 30.11 in 10.0 mi ESE 13.8 mph - N/A   Clear
5:45 PM 42.8 °F 36.6 °F 32.0 °F 66% 30.12 in 10.0 mi ESE 11.5 mph - N/A   Clear
6:55 PM 44.6 °F 37.4 °F 32.0 °F 61% 30.10 in 10.0 mi ESE 16.1 mph - N/A   Clear
7:50 PM 42.8 °F 35.8 °F 32.0 °F 66% 30.08 in 10.0 mi ESE 13.8 mph - N/A   Clear
8:45 PM 44.6 °F 38.1 °F 32.0 °F 61% 30.09 in 10.0 mi SE 13.8 mph - N/A   Clear
9:15 PM 43.7 °F 38.1 °F 32.0 °F 63% 30.10 in 10.0 mi SE 10.4 mph - N/A   Clear
9:35 PM 43.3 °F 37.7 °F 32.0 °F 64% 30.10 in 10.0 mi SE 10.4 mph - N/A   Clear
9:45 PM 42.8 °F 36.6 °F 32.0 °F 66% 30.10 in 10.0 mi SE 11.5 mph - N/A   Clear
9:55 PM 43.0 °F 37.2 °F 32.2 °F 66% 30.10 in 10.0 mi SE 10.4 mph - N/A   Clear
10:15 PM 42.3 °F 37.3 °F 32.7 °F 69% 30.09 in 10.0 mi ESE 8.1 mph - N/A   Clear
10:35 PM 41.2 °F 36.6 °F 32.9 °F 72% 30.09 in 10.0 mi ESE 6.9 mph - N/A   Clear
10:55 PM 41.2 °F 37.3 °F 32.9 °F 72% 30.09 in 10.0 mi East 5.8 mph - N/A   Clear
11:15 PM 41.5 °F 37.8 °F 33.1 °F 72% 30.09 in 10.0 mi East 5.8 mph - N/A   Clear
11:35 PM 41.2 °F 36.6 °F 32.9 °F 72% 30.08 in 10.0 mi ESE 6.9 mph - N/A   Clear
11:55 PM 41.0 °F 36.4 °F 32.9 °F 73% 30.08 in 10.0 mi ESE 6.9 mph - N/A   Clear