Weather History for St. Charles, MO

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Monday, December 31, 2012

  Actual Average (KSTL) Record (KSTL)
Temperature  
Mean Temperature 32 °F 32 °F  
Max Temperature 37 °F 40 °F 74 °F (1951)
Min Temperature 28 °F 24 °F -10 °F (1976)
Degree Days  
Heating Degree Days 32 33  
Month to date heating degree days 939  
Since 1 July heating degree days 1765  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 1646  
Moisture  
Dew Point 30 °F    
Average Humidity 89    
Maximum Humidity 100    
Minimum Humidity 62    
Precipitation  
Precipitation 0.18 in 0.09 in 1.69 in (1984)
Month to date precipitation 2.84  
Year to date precipitation 40.96  
Snow  
Snow 0.00 in 0.20 in 2.50 in (1927)
Month to date snowfall 4.4  
Since 1 July snowfall 5.1  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 3 mph (WSW)    
Max Wind Speed 15 mph    
Max Gust Speed -    
Visibility 3 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 31, 2012 Rise Set
Actual Time 7:20 AM CST 4:49 PM CST
Civil Twilight 6:50 AM CST 5:19 PM CST
Nautical Twilight 6:17 AM CST 5:53 PM CST
Astronomical Twilight 5:44 AM CST 6:25 PM CST
Moon 8:18 PM CST (12/31) 9:03 AM CST (12/31)
Length of Visible Light 10h 29m
Length of Day
9h 29m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Hourly Weather History & Observations

Time (CST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 32.0 °F 27.5 °F 25.0 °F 75% 30.20 in 10.0 mi South 4.6 mph - N/A   Clear
1:54 AM 33.1 °F - 24.1 °F 70% 30.23 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 33.1 °F 26.9 °F 25.0 °F 72% 30.21 in 10.0 mi South 6.9 mph - N/A   Clear
3:54 AM 33.1 °F 27.7 °F 25.0 °F 72% 30.19 in 10.0 mi South 5.8 mph - N/A   Clear
4:54 AM 35.1 °F 30.1 °F 24.1 °F 64% 30.19 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
5:54 AM 34.0 °F 29.8 °F 24.1 °F 67% 30.18 in 10.0 mi SW 4.6 mph - N/A   Overcast
6:54 AM 34.0 °F 29.8 °F 25.0 °F 70% 30.18 in 10.0 mi SSW 4.6 mph - N/A   Overcast
7:54 AM 35.1 °F - 26.1 °F 70% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
8:54 AM 37.0 °F 31.0 °F 25.0 °F 62% 30.17 in 9.0 mi West 8.1 mph - N/A   Overcast
9:09 AM 35.6 °F 27.1 °F 28.4 °F 75% 30.17 in 2.5 mi WNW 12.7 mph - 0.00 in Snow Light Snow
9:19 AM 33.8 °F 25.8 °F 28.4 °F 81% 30.17 in 1.2 mi WNW 10.4 mph - 0.00 in Snow Light Snow
9:54 AM 33.1 °F 28.7 °F 30.9 °F 92% 30.19 in 1.0 mi WSW 4.6 mph - 0.00 in Snow Light Snow
10:14 AM 33.8 °F 28.6 °F 30.2 °F 87% 30.20 in 0.8 mi SW 5.8 mph - 0.00 in Snow Light Snow
10:35 AM 32.0 °F 28.7 °F 32.0 °F 100% 30.19 in 0.5 mi SSW 3.5 mph - 0.00 in Fog , Snow Snow
10:54 AM 32.0 °F - 32.0 °F 100% 30.18 in 0.5 mi Calm Calm - 0.00 in Fog , Snow Snow
11:54 AM 32.0 °F 27.5 °F 32.0 °F 100% 30.17 in 0.5 mi SSW 4.6 mph - 0.01 in Fog , Snow Snow
12:16 PM 32.0 °F 27.5 °F 30.2 °F 93% 30.15 in 0.5 mi SW 4.6 mph - 0.01 in Fog , Snow Light Snow
12:49 PM 32.0 °F - 32.0 °F 100% 30.12 in 1.0 mi Calm Calm - 0.03 in Snow Light Snow
12:54 PM 32.0 °F - 32.0 °F 100% 30.14 in 1.2 mi Calm Calm - 0.03 in Snow Light Snow
1:19 PM 33.8 °F - 30.2 °F 87% 30.12 in 2.5 mi Calm Calm - 0.04 in   Overcast
1:31 PM 33.8 °F 30.8 °F 30.2 °F 87% 30.12 in 1.0 mi SW 3.5 mph - 0.05 in Snow Light Snow
1:54 PM 33.1 °F - 32.0 °F 96% 30.12 in 1.0 mi Calm Calm - 0.07 in Snow Light Snow
2:46 PM 33.8 °F - 33.8 °F 100% 30.10 in 2.5 mi Calm Calm - 0.04 in   Overcast
2:54 PM 33.1 °F - 32.0 °F 96% 30.11 in 2.5 mi Calm Calm - 0.05 in   Overcast
3:07 PM 33.8 °F - 32.0 °F 93% 30.10 in 3.0 mi Calm Calm - 0.01 in   Overcast
3:24 PM 33.8 °F - 32.0 °F 93% 30.11 in 3.0 mi Calm Calm - 0.01 in   Overcast
3:32 PM 33.8 °F - 32.0 °F 93% 30.10 in 3.0 mi Calm Calm - 0.02 in   Overcast
3:37 PM 33.8 °F - 32.0 °F 93% 30.10 in 3.0 mi Calm Calm - 0.02 in   Overcast
3:54 PM 33.1 °F - 32.0 °F 96% 30.11 in 3.0 mi Calm Calm - 0.02 in   Overcast
4:03 PM 33.8 °F - 32.0 °F 93% 30.10 in 3.0 mi Calm Calm - N/A   Overcast
4:13 PM 33.8 °F - 32.0 °F 93% 30.09 in 2.0 mi Calm Calm - 0.00 in Snow Light Snow
4:20 PM 33.8 °F - 32.0 °F 93% 30.10 in 1.5 mi Calm Calm - 0.00 in Snow Light Snow
4:46 PM 33.8 °F - 32.0 °F 93% 30.10 in 2.0 mi Calm Calm - 0.00 in   Overcast
4:54 PM 33.1 °F - 32.0 °F 96% 30.11 in 2.5 mi Calm Calm - 0.00 in   Overcast
5:05 PM 33.8 °F - 30.2 °F 87% 30.10 in 2.0 mi Calm Calm - 0.00 in Snow Light Snow
5:18 PM 33.8 °F - 32.0 °F 93% 30.09 in 1.8 mi Calm Calm - 0.00 in   Overcast
5:29 PM 32.0 °F - 32.0 °F 100% 30.10 in 2.0 mi Calm Calm - 0.00 in   Overcast
5:39 PM 32.0 °F - 30.2 °F 93% 30.10 in 1.8 mi Calm Calm - 0.00 in   Overcast
6:21 PM 33.8 °F - 32.0 °F 93% 30.10 in 1.8 mi Calm Calm - N/A   Overcast
6:29 PM 33.8 °F - 32.0 °F 93% 30.09 in 1.8 mi Calm Calm - N/A   Overcast
6:54 PM 32.0 °F - 32.0 °F 100% 30.11 in 1.2 mi Calm Calm - N/A   Overcast
7:13 PM 32.0 °F - 32.0 °F 100% 30.10 in 1.0 mi Calm Calm - N/A   Overcast
7:24 PM 32.0 °F - 30.2 °F 93% 30.09 in 0.8 mi Calm Calm - N/A   Overcast
7:54 PM 32.0 °F - 32.0 °F 100% 30.11 in 0.8 mi Calm Calm - 0.00 in   Mist
8:03 PM 33.8 °F - 32.0 °F 93% 30.10 in 1.0 mi Calm Calm - N/A   Mist
8:13 PM 32.0 °F - 32.0 °F 100% 30.09 in 0.8 mi Calm Calm - N/A   Mist
8:54 PM 32.0 °F - 30.9 °F 96% 30.11 in 1.0 mi Calm Calm - N/A   Overcast
9:14 PM 32.0 °F - 30.2 °F 93% 30.09 in 0.8 mi Calm Calm - N/A   Overcast
9:37 PM 32.0 °F - 30.2 °F 93% 30.09 in 1.0 mi Calm Calm - N/A   Overcast
10:01 PM 33.8 °F 27.0 °F 30.2 °F 87% 30.09 in 3.0 mi North 8.1 mph - N/A   Overcast
10:54 PM 30.9 °F 22.8 °F 28.0 °F 89% 30.13 in 6.0 mi North 9.2 mph - N/A   Overcast
11:39 PM 28.4 °F 17.0 °F 24.8 °F 86% 30.13 in 7.0 mi North 15.0 mph - 0.00 in   Overcast
11:54 PM 28.0 °F 17.5 °F 24.1 °F 85% 30.15 in 6.0 mi North 12.7 mph - 0.00 in   Overcast