Alton, IL

9:52 AM CDT on August 23, 2017 (GMT -0500)
Saint Louis Regional

Weather History for KALN - December, 2011

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Monday, December 19, 2011

  Actual Average Record
Temperature  
Mean Temperature 48 °F -  
Max Temperature 51 °F 37 °F 62 °F (1997)
Min Temperature 45 °F 23 °F 0 °F (2016)
Degree Days  
Heating Degree Days 17    
Moisture  
Dew Point 40 °F    
Average Humidity 75    
Maximum Humidity 99    
Minimum Humidity 52    
Precipitation  
Precipitation 0.08 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 9 mph (South)    
Max Wind Speed 17 mph    
Max Gust Speed 17 mph    
Visibility 8 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

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Dec. 19, 2011 Rise Set
Actual Time 7:13 AM CST 4:40 PM CST
Civil Twilight 6:43 AM CST 5:10 PM CST
Nautical Twilight 6:10 AM CST 5:44 PM CST
Astronomical Twilight 5:37 AM CST 6:16 PM CST
Moon 1:26 AM CST (12/19) 12:37 PM CST (12/19)
Length of Visible Light 10h 26m
Length of Day
9h 26m
Waning Crescent, 31% of the Moon is Illuminated
Dec 19
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
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 49.5 °F - 32.4 °F 52% 30.01 in 10.0 mi South 11.5 mph - N/A   Overcast
12:35 AM 49.5 °F - 32.9 °F 53% 30.01 in 10.0 mi South 12.7 mph - N/A   Overcast
12:55 AM 49.5 °F - 33.8 °F 55% 30.00 in 10.0 mi South 9.2 mph - N/A   Overcast
1:15 AM 50.0 °F - 34.2 °F 55% 30.00 in 10.0 mi South 10.4 mph - N/A   Overcast
1:35 AM 49.3 °F - 35.8 °F 60% 30.00 in 10.0 mi South 9.2 mph - N/A   Overcast
1:55 AM 50.2 °F - 35.8 °F 58% 30.00 in 10.0 mi SSW 9.2 mph 17.3 mph N/A   Overcast
2:15 AM 49.6 °F - 36.5 °F 61% 30.01 in 10.0 mi South 9.2 mph - N/A   Overcast
2:35 AM 50.2 °F - 36.9 °F 60% 30.01 in 10.0 mi SSW 8.1 mph - N/A   Overcast
2:55 AM 50.0 °F - 37.4 °F 62% 30.01 in 10.0 mi South 6.9 mph - N/A   Overcast
3:15 AM 50.2 °F - 36.9 °F 60% 30.01 in 10.0 mi SSE 6.9 mph - N/A   Overcast
3:35 AM 50.4 °F - 36.9 °F 60% 30.00 in 10.0 mi South 8.1 mph - N/A   Overcast
3:55 AM 50.4 °F - 36.7 °F 59% 30.00 in 10.0 mi South 9.2 mph - N/A   Overcast
4:15 AM 50.2 °F - 36.9 °F 60% 30.00 in 10.0 mi South 9.2 mph - N/A   Overcast
4:35 AM 50.7 °F - 36.5 °F 58% 30.00 in 10.0 mi South 10.4 mph - N/A   Overcast
4:55 AM 50.4 °F - 36.9 °F 60% 30.00 in 10.0 mi South 9.2 mph - N/A   Overcast
5:15 AM 50.4 °F - 36.9 °F 60% 30.01 in 10.0 mi South 10.4 mph - N/A   Overcast
5:35 AM 50.4 °F - 36.9 °F 60% 30.00 in 10.0 mi South 11.5 mph - N/A   Overcast
5:55 AM 50.5 °F - 36.7 °F 59% 30.01 in 10.0 mi South 8.1 mph - N/A   Overcast
6:50 AM 50.0 °F - 37.4 °F 62% 30.01 in 10.0 mi South 13.8 mph - N/A   Overcast
7:50 AM 50.0 °F - 39.2 °F 66% 30.03 in 10.0 mi South 17.3 mph - N/A   Overcast
8:50 AM 50.0 °F - 37.4 °F 62% 30.04 in 10.0 mi South 17.3 mph - N/A   Overcast
10:50 AM 51.8 °F - 41.0 °F 67% 30.06 in 10.0 mi South 11.5 mph - N/A   Overcast
12:50 PM 51.8 °F - 44.6 °F 76% 30.03 in 10.0 mi South 9.2 mph - N/A   Overcast
1:50 PM 51.8 °F - 44.6 °F 76% 30.03 in 10.0 mi SSW 9.2 mph - N/A   Overcast
2:50 PM 50.0 °F - 46.4 °F 87% 30.03 in 10.0 mi South 9.2 mph - N/A Rain Rain
3:50 PM 48.2 °F - 46.4 °F 93% 30.05 in 5.0 mi South 11.5 mph - N/A Rain Rain
4:50 PM 48.2 °F - 46.4 °F 93% 30.07 in 4.0 mi WSW 5.8 mph - N/A Rain Rain
5:50 PM 48.2 °F - 46.4 °F 93% 30.09 in 3.0 mi NNW 4.6 mph - N/A Rain Heavy Rain
7:45 PM 46.4 °F 42.9 °F 44.6 °F 93% 30.12 in 5.0 mi NNW 6.9 mph - N/A Rain Light Rain
8:50 PM 46.4 °F 43.5 °F 44.6 °F 93% 30.11 in 4.0 mi NE 5.8 mph - N/A Rain Rain
9:15 PM 45.7 °F 44.4 °F 45.3 °F 99% 30.10 in 5.0 mi NE 3.5 mph - N/A Rain Rain
9:35 PM 45.7 °F 42.7 °F 45.1 °F 98% 30.09 in 5.0 mi NE 5.8 mph - N/A Rain Light Rain
9:46 PM 46.4 °F 41.9 °F 44.6 °F 93% 30.10 in 5.0 mi ENE 9.2 mph - N/A Rain Light Rain
9:55 PM 45.5 °F - 45.0 °F 98% 30.12 in 5.0 mi Calm Calm - N/A Rain Rain
10:15 PM 45.7 °F - 45.1 °F 98% 30.13 in 3.0 mi Calm Calm - N/A Rain Rain
10:35 PM 45.5 °F - 45.0 °F 98% 30.14 in 3.0 mi Calm Calm - N/A Rain Rain
10:55 PM 45.5 °F - 45.0 °F 98% 30.13 in 3.0 mi Calm Calm - N/A Rain Rain
11:15 PM 45.5 °F - 45.0 °F 98% 30.13 in 2.5 mi Calm Calm - N/A Rain Rain
11:35 PM 45.5 °F - 45.0 °F 98% 30.14 in 3.0 mi Calm Calm - N/A Rain Light Rain
11:55 PM 45.5 °F - 45.0 °F 98% 30.13 in 3.0 mi Calm Calm - N/A Rain Heavy Rain