Almanac Averages and Extremes for April 29

OTTAWA MACDONALD-CARTIER INT'L A
ONTARIO

45°19'21.000" N
75°40'09.000" W
114.00 m
6106000
71628
YOW

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Almanac Averages & Extremes
Averages and Extremes
Category (Period of Record) Value Year
Average Maximum Temperature 14.9 °C  
Average Minimum Temperature 4.0 °C  
Monthly Frequency of Precipitation 41 %  
Highest Temperature (1939-2011) 28.3 °C 1941
Lowest Temperature (1939-2011) -3.9 °C 1947
Greatest Precipitation (1939-2011) 15.7 mm 1956
Greatest Rainfall (1939-2011) 15.7 mm 1956
Greatest Snowfall (1939-2011) 1.8 cm 1947
Most Snow on the Ground (1955-2011) 10.0 cm 2002
Most Recent Daily Data for April 29
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
Year
2011 11.5 4.1 7.8 0.6 0.0 0.6 0 24LegendEE 39LegendEE
2010 15.3 2.2 8.8 0.0 0.0 0.0 0 29LegendEE 39LegendEE
2009 15.5 1.6 8.6 0.0 0.0 0.0 0   <31
2008 10.3 -0.6 4.9 0.0 0.0 0.0 0 29LegendEE 48LegendEE
2007 18.8 8.0 13.4 4.4 0.0 4.4 0   <31

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] = No data available
  • ^ = The value displayed is based on incomplete data
  • † = Data for this day has undergone only basic quality checking
  • ‡ = Partner data that is not subject to review by the National Climate Archives
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