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Notices:

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The Notice Inventory contains a record of all past and current Notices.

Climate Data Almanac for August 18

OTTAWA MACDONALD-CARTIER INT'L A
ONTARIO
Latitude: Longitude: Elevation:
Climate ID: WMO ID: TC ID:
Averages and Extremes
Average Maximum Temperature 24.8 °C  
Average Minimum Temperature 14.0 °C  
Monthly Frequency of Precipitation 36 %  
Highest Temperature (1939-2011) 32.4 °C 2002
Lowest Temperature (1939-2011) 5.6 °C 1941
Greatest Precipitation (1939-2011) 35.6 mm 1969
Greatest Rainfall (1939-2011) 35.6 mm 1969
Greatest Snowfall (1939-2011)  
Most Snow on the Ground (1955-2010)  

Most Recent Daily Data for August 18
Year Max Temp
°C
Min Temp
°C
Mean Temp
°C
Total Rain
mm
Total Snow
cm
Total Precip
mm
Snow on Grnd
cm
Dir of Max Gust
10's deg
Spd of Max Gust
km/h
2011 28.0 17.9 23.0 2.8 0.0 2.8   31 48  
2010 24.1 13.2 18.7 0.0 0.0 0.0 0   <31  
2009 28.2 19.2 23.7 1.2 0.0 1.2 0 24E 35E  
2008 29.1 12.7 20.9 22.4 0.0 22.4 0 35E 59E  
2007 19.1 10.8 15.0 0.0 0.0 0.0 0 29E 41E  

Note: The records and most recent values for this day are derived from a combination of final and preliminary † data sources.

  • Legend
  • [empty] = No data available
  • M = Missing
  • E = Estimated
  • A = Accumulated
  • C = Precipitation occurred, amount uncertain
  • L = Precipitation may or may not have occurred
  • F = Accumulated and estimated
  • N = Temperature missing but known to be > 0
  • Y = Temperature missing but known to be < 0
  • S = More than one occurrence
  • T = Trace
  • † = Data for this day has undergone only preliminary quality checking
  • ‡ = Partner data that is not subject to review by the National Climate Archives



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