Weather History for Alton, IL

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Friday, February 15, 2013

  Actual Average Record
Temperature  
Mean Temperature 38 °F -  
Max Temperature 44 °F 43 °F 75 °F (2005)
Min Temperature 31 °F 28 °F 5 °F (2014)
Degree Days  
Heating Degree Days 28    
Moisture  
Dew Point 20 °F    
Average Humidity 53    
Maximum Humidity 71    
Minimum Humidity 28    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.18 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 21 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events Thunderstorm    
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. 15, 2013 Rise Set
Actual Time 6:51 AM CST 5:37 PM CST
Civil Twilight 6:23 AM CST 6:05 PM CST
Nautical Twilight 5:52 AM CST 6:36 PM CST
Astronomical Twilight 5:21 AM CST 7:07 PM CST
Moon 9:30 AM CST (2/15) 11:35 PM CST (2/15)
Length of Visible Light 11h 41m
Length of Day
10h 46m
Waxing Crescent, 30% of the Moon is Illuminated
Feb 15
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
12:15 AM 44.2 °F - 24.4 °F 46% 30.06 in 10.0 mi Calm Calm - N/A   Overcast
12:55 AM 42.4 °F - 27.1 °F 55% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
1:15 AM 43.2 °F 40.5 °F 25.5 °F 50% 30.08 in 10.0 mi NW 4.6 mph - N/A   Overcast
1:35 AM 42.8 °F 39.3 °F 25.2 °F 50% 30.08 in 10.0 mi WNW 5.8 mph - N/A   Overcast
1:55 AM 42.4 °F 38.8 °F 24.6 °F 49% 30.09 in 10.0 mi WNW 5.8 mph - N/A   Overcast
2:15 AM 41.2 °F 38.2 °F 24.6 °F 52% 30.09 in 10.0 mi NW 4.6 mph - N/A   Scattered Clouds
2:35 AM 40.6 °F 37.5 °F 24.8 °F 53% 30.10 in 10.0 mi NNW 4.6 mph - N/A   Clear
2:55 AM 39.4 °F 32.7 °F 25.7 °F 58% 30.11 in 10.0 mi NNW 10.4 mph - N/A   Clear
3:15 AM 38.3 °F 33.2 °F 25.9 °F 61% 30.11 in 10.0 mi NW 6.9 mph - N/A   Clear
3:35 AM 37.6 °F 31.0 °F 26.4 °F 64% 30.11 in 10.0 mi NW 9.2 mph - N/A   Clear
3:55 AM 36.9 °F 30.1 °F 27.3 °F 68% 30.12 in 10.0 mi NW 9.2 mph - N/A   Clear
4:15 AM 36.5 °F 30.3 °F 27.5 °F 70% 30.13 in 10.0 mi NW 8.1 mph - N/A   Clear
4:35 AM 36.1 °F 30.6 °F 27.1 °F 70% 30.14 in 10.0 mi NW 6.9 mph - N/A   Clear
4:55 AM 35.6 °F 29.9 °F 27.0 °F 71% 30.14 in 10.0 mi NW 6.9 mph - N/A   Clear
5:15 AM 35.1 °F 28.6 °F 26.6 °F 71% 30.15 in 10.0 mi NW 8.1 mph - N/A   Clear
5:35 AM 34.7 °F 29.6 °F 26.2 °F 71% 30.16 in 10.0 mi NNW 5.8 mph - N/A   Clear
6:45 AM 33.8 °F 26.4 °F 24.8 °F 70% 30.19 in 10.0 mi NW 9.2 mph - N/A   Overcast
7:45 AM 32.0 °F 19.8 °F 21.2 °F 64% 30.23 in 10.0 mi NW 20.7 mph - N/A   Overcast
8:45 AM 32.0 °F 20.5 °F 19.4 °F 60% 30.26 in 10.0 mi NW 18.4 mph - N/A   Scattered Clouds
9:45 AM 33.8 °F 22.8 °F 10.4 °F 38% 30.27 in 10.0 mi NW 18.4 mph - N/A   Partly Cloudy
11:50 AM 37.4 °F 28.5 °F 10.4 °F 33% 30.26 in 10.0 mi NNW 15.0 mph 20.7 mph N/A   Clear
4:50 PM 39.2 °F 33.0 °F 8.6 °F 28% 30.23 in 10.0 mi NW 9.2 mph - N/A   Clear
5:50 PM 35.6 °F 29.2 °F 15.8 °F 44% 30.25 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
6:50 PM 33.8 °F 27.7 °F 17.6 °F 52% 30.25 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
7:50 PM 35.6 °F - 12.2 °F 38% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:50 PM 32.0 °F - 17.6 °F 55% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:15 PM 31.6 °F 28.3 °F 20.1 °F 62% 30.24 in 10.0 mi WNW 3.5 mph - N/A   Overcast
9:35 PM 33.6 °F 27.5 °F 17.6 °F 52% 30.24 in 10.0 mi NW 6.9 mph - N/A   Overcast
9:50 PM 35.6 °F 26.6 °F 12.2 °F 38% 30.24 in 10.0 mi NNW 13.8 mph - N/A   Overcast
9:55 PM 34.9 °F 29.0 °F 13.6 °F 42% 30.24 in 10.0 mi NW 6.9 mph - N/A Thunderstorm Thunderstorm
10:15 PM 34.0 °F 26.6 °F 13.8 °F 44% 30.24 in 10.0 mi NNW 9.2 mph - N/A Thunderstorm Thunderstorm
10:35 PM 33.1 °F 25.5 °F 14.7 °F 47% 30.24 in 10.0 mi NNW 9.2 mph - N/A   Overcast
10:55 PM 32.4 °F 26.0 °F 14.0 °F 47% 30.24 in 10.0 mi NNW 6.9 mph - N/A   Overcast
11:15 PM 32.0 °F 25.6 °F 14.0 °F 48% 30.24 in 10.0 mi NNW 6.9 mph - N/A   Scattered Clouds
11:35 PM 31.5 °F 22.3 °F 13.3 °F 47% 30.23 in 10.0 mi NNW 11.5 mph - N/A   Scattered Clouds
11:55 PM 31.1 °F 22.4 °F 13.8 °F 49% 30.23 in 10.0 mi NNW 10.4 mph - N/A   Clear