Alton, IL

2:09 AM CDT on March 25, 2017 (GMT -0500)
Saint Louis Regional

Weather History for KALN - February, 2013

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Thursday, February 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 28 °F -  
Max Temperature 35 °F 43 °F 113 °F (2000)
Min Temperature 21 °F 29 °F 14 °F (2009)
Degree Days  
Heating Degree Days 37    
Moisture  
Dew Point 24 °F    
Average Humidity 84    
Maximum Humidity 93    
Minimum Humidity 65    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 6 mph (East)    
Max Wind Speed 23 mph    
Max Gust Speed 34 mph    
Visibility 7 miles    
Events Snow    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Feb. 21, 2013 Rise Set
Actual Time 6:43 AM CST 5:44 PM CST
Civil Twilight 6:16 AM CST 6:11 PM CST
Nautical Twilight 5:45 AM CST 6:42 PM CST
Astronomical Twilight 5:14 AM CST 7:13 PM CST
Moon 2:01 PM CST (2/21) 3:46 AM CST (2/21)
Length of Visible Light 11h 55m
Length of Day
11h 01m
Waxing Gibbous, 84% of the Moon is Illuminated
Feb 21
Waxing Gibbous
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New
Mar 19
First 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 23.0 °F - 17.6 °F 80% 30.32 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 23.2 °F - 17.6 °F 79% 30.33 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 22.5 °F - 17.6 °F 82% 30.34 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 21.6 °F - 16.5 °F 81% 30.35 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 22.5 °F 16.3 °F 17.6 °F 82% 30.31 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
1:55 AM 22.8 °F - 18.0 °F 82% 30.31 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:15 AM 22.6 °F - 18.0 °F 82% 30.31 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:35 AM 23.0 °F 18.4 °F 18.5 °F 83% 30.31 in 10.0 mi NNE 3.5 mph - N/A   Clear
2:55 AM 23.4 °F - 18.5 °F 82% 30.29 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 24.3 °F 18.4 °F 18.5 °F 79% 30.28 in 10.0 mi ENE 4.6 mph - N/A   Clear
3:35 AM 24.6 °F - 18.3 °F 77% 30.29 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 24.4 °F - 18.3 °F 78% 30.29 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 23.9 °F 18.0 °F 18.1 °F 79% 30.28 in 10.0 mi NNE 4.6 mph - N/A   Clear
4:35 AM 24.1 °F 18.2 °F 18.5 °F 79% 30.26 in 10.0 mi ENE 4.6 mph - N/A   Clear
5:15 AM 25.2 °F 17.3 °F 19.9 °F 81% 30.25 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
5:35 AM 25.7 °F 17.1 °F 20.7 °F 81% 30.26 in 10.0 mi East 8.1 mph - N/A   Overcast
5:55 AM 26.4 °F 19.8 °F 21.0 °F 80% 30.26 in 10.0 mi East 5.8 mph - N/A   Overcast
6:50 AM 26.6 °F 14.3 °F 21.2 °F 80% 30.24 in 10.0 mi East 16.1 mph - N/A   Overcast
7:50 AM 26.6 °F 14.7 °F 21.2 °F 80% 30.27 in 10.0 mi East 15.0 mph - N/A   Overcast
8:58 AM 28.4 °F 16.6 °F 21.2 °F 74% 30.22 in 10.0 mi East 16.1 mph 23.0 mph N/A   Overcast
10:50 AM 28.4 °F 16.2 °F 21.2 °F 74% 30.11 in 4.0 mi East 17.3 mph 25.3 mph N/A Snow Light Ice Pellets
12:09 PM 28.4 °F 17.5 °F 23.0 °F 80% 30.11 in 0.2 mi NNE 13.8 mph 23.0 mph N/A Snow Heavy Snow
12:45 PM 35.6 °F 27.5 °F 24.8 °F 65% 30.16 in 0.5 mi NNE 11.5 mph - N/A Snow Snow
1:50 PM 28.4 °F 16.6 °F 24.8 °F 86% 30.13 in 0.2 mi NNE 16.1 mph - N/A Snow Heavy Snow
2:45 PM 28.4 °F 17.5 °F 24.8 °F 86% 30.04 in 0.2 mi NNE 13.8 mph 23.0 mph N/A Snow Heavy Snow
3:45 PM 28.4 °F 14.4 °F 24.8 °F 86% 29.96 in 1.0 mi East 23.0 mph 34.5 mph N/A Snow Light Snow
4:45 PM 32.0 °F 20.8 °F 28.4 °F 87% 29.90 in 4.0 mi East 17.3 mph 32.2 mph N/A Snow Light Snow
5:45 PM 32.0 °F 20.8 °F 28.4 °F 87% 29.90 in 10.0 mi ESE 17.3 mph 25.3 mph N/A   Overcast
6:45 PM 32.0 °F 23.0 °F 30.2 °F 93% 29.89 in 10.0 mi East 11.5 mph - N/A   Overcast
7:45 PM 33.8 °F 23.5 °F 30.2 °F 87% 29.88 in 10.0 mi ESE 16.1 mph - N/A   Overcast
8:45 PM 33.8 °F 25.3 °F 30.2 °F 87% 29.87 in 10.0 mi SE 11.5 mph 23.0 mph N/A   Overcast
9:15 PM 34.3 °F 27.0 °F 31.5 °F 89% 29.87 in 2.5 mi ESE 9.2 mph - N/A   Overcast
9:35 PM 34.3 °F 26.5 °F 32.0 °F 91% 29.86 in 2.5 mi ESE 10.4 mph - N/A   Overcast
9:45 PM 33.8 °F 24.3 °F 32.0 °F 93% 29.86 in 10.0 mi SE 13.8 mph - N/A   Overcast
9:55 PM 34.3 °F 27.7 °F 32.0 °F 91% 29.86 in 2.5 mi ESE 8.1 mph - N/A   Overcast
10:15 PM 34.7 °F 28.1 °F 32.0 °F 90% 29.85 in 2.5 mi ESE 8.1 mph - N/A   Overcast
10:35 PM 34.7 °F 28.8 °F 32.0 °F 90% 29.84 in 2.5 mi ESE 6.9 mph - N/A Snow Light Snow
10:55 PM 34.7 °F 29.6 °F 32.2 °F 91% 29.84 in 3.0 mi ESE 5.8 mph - N/A   Overcast
11:15 PM 34.7 °F 28.8 °F 32.2 °F 91% 29.84 in 4.0 mi ESE 6.9 mph - N/A   Overcast
11:35 PM 34.7 °F 29.6 °F 32.4 °F 91% 29.83 in 3.0 mi ESE 5.8 mph - N/A   Overcast
11:55 PM 34.7 °F 31.8 °F 32.5 °F 92% 29.84 in 2.5 mi SE 3.5 mph - N/A   Overcast