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Almanac Averages and Extremes for September 20

CALGARY INT'L A
ALBERTA

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Almanac Averages & Extremes
Averages and Extremes
Category (Period of Record) Value Year
Average Maximum Temperature 16.7 °C  
Average Minimum Temperature 3.1 °C  
Monthly Frequency of Precipitation 30 %  
Highest Temperature (1884-2011) 29.4 °C 1922
Lowest Temperature (1884-2011) -7.8 °C 1934
Greatest Precipitation (1884-2011) 30.5 mm 1945
Greatest Rainfall (1884-2011) 28.2 mm 1945
Greatest Snowfall (1884-2011) 11.2 cm 1955
Most Snow on the Ground (1955-2011)    
Most Recent Daily Data for September 20
Year Maximum Temperature DefinitionMax Temp
°C
Minimum Temperature DefinitionMin Temp
°C
Mean Temperature DefinitionMean Temp
°C
Total Rain DefinitionTotal Rain
mm
Total Snow DefinitionTotal Snow
cm
Total Precipitation DefinitionTotal Precip
mm
Snow on Ground DefinitionSnow on Grnd
cm
Direction of Maximum Gust DefinitionDir of Max Gust
10's deg
Speed of Maximum Gust DefinitionSpd of Max Gust
km/h
2011 17.1 2.0 9.6 LegendTT 0.0 LegendTT 0   <31
2010 5.0 1.6 3.3 1.0 0.0 1.0 0   <31
2009 15.8 5.9 10.9 2.0 0.0 2.0 0 2LegendEE 44LegendEE
2008 23.9 4.8 14.4 0.0 0.0 0.0 0   <31
2007 13.0 0.7 6.9 4.2 0.0 4.2 0 36LegendEE 48LegendEE

Legend

  • A = Accumulated
  • B = More than one occurrence and estimated
  • C = Precipitation occurred, amount uncertain
  • E = Estimated
  • F = Accumulated and estimated
  • L = Precipitation may or may not have occurred
  • M = Missing
  • N = Temperature missing but known to be > 0
  • S = More than one occurrence
  • T = Trace
  • Y = Temperature missing but known to be   < 0
  • [empty] = Indicates an unobserved value
  • ^ = The value displayed is based on incomplete data
  • † = Data that is not subject to review by the National Climate Archives

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