St. Catharines,

3:29 AM EDT on October 18, 2017 (GMT -0400)
St. Catharines

Weather History for CYSN - December, 2012

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Wednesday, December 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 36 °F -  
Max Temperature 41 °F 31 °F 51 °F (2002)
Min Temperature 32 °F 22 °F 3 °F (2004)
Degree Days  
Heating Degree Days 28    
Moisture  
Dew Point 32 °F    
Average Humidity 76    
Maximum Humidity 100    
Minimum Humidity 65    
Precipitation  
Precipitation 0.00 in -8.27 in - ()
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 5 mph ()    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 14.1 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: Averaged Metar Reports

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Daily Weather History Graph

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Date:

Astronomy

Dec. 19, 2012 Rise Set
Actual Time 7:44 AM EST 4:43 PM EST
Civil Twilight 7:12 AM EST 5:16 PM EST
Nautical Twilight 6:36 AM EST 5:52 PM EST
Astronomical Twilight 6:01 AM EST 6:26 PM EST
Moon 11:42 AM EST (12/19) No Moon Set
Length of Visible Light 10h 04m
Length of Day
8h 59m
Waxing Crescent, 45% of the Moon is Illuminated
Dec 19
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
7:00 AM 32.0 °F 26.4 °F 32.0 °F 100% 29.88 in 15.0 mi SW 5.8 mph - N/A   Mostly Cloudy
8:00 AM 35.6 °F 31.7 °F 32.0 °F 87% 29.90 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
9:00 AM 37.4 °F 33.8 °F 35.6 °F 93% 29.92 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
10:00 AM 39.2 °F 33.6 °F 32.0 °F 75% 29.95 in 12.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
11:00 AM 41.0 °F 35.8 °F 33.8 °F 76% 29.97 in 15.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
12:00 PM 41.0 °F 37.1 °F 32.0 °F 70% 29.99 in 15.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
1:00 PM 41.0 °F 36.4 °F 30.2 °F 65% 30.01 in 15.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
2:00 PM 41.0 °F 37.1 °F 30.2 °F 65% 30.03 in 15.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
3:00 PM 41.0 °F 35.8 °F 30.2 °F 65% 30.05 in 15.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:00 PM 41.0 °F - 30.2 °F 65% 30.06 in 15.0 mi Calm Calm - N/A   Mostly Cloudy
5:00 PM 41.0 °F - 32.0 °F 70% 30.09 in 15.0 mi WNW 2.3 mph - N/A   Mostly Cloudy
6:00 PM 41.0 °F 39.0 °F 33.8 °F 76% 30.11 in 15.0 mi WSW 3.5 mph - N/A   Overcast
7:00 PM 41.0 °F 39.0 °F 33.8 °F 76% 30.13 in 15.0 mi West 3.5 mph - N/A   Overcast
8:00 PM 37.4 °F 31.4 °F 32.0 °F 81% 30.15 in 15.0 mi East 8.1 mph - N/A   Mostly Cloudy
9:00 PM 37.4 °F 33.8 °F 32.0 °F 81% 30.17 in 15.0 mi ESE 4.6 mph - N/A   Overcast