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Almanac Averages and Extremes for June 21

TRENTON A
ONTARIO

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Almanac Averages & Extremes
Averages and Extremes
Category (Period of Record) Value Year
Average Maximum Temperature 24.0 °C  
Average Minimum Temperature 12.7 °C  
Monthly Frequency of Precipitation 39 %  
Highest Temperature (1935-2023) 31.7 °C 1953
Lowest Temperature (1935-2023) 6.1 °C 1969
Greatest Precipitation (1935-2023) 48.7 mm 1997
Greatest Rainfall (1935-2023) 48.7 mm 1997
Greatest Snowfall (1935-2023)    
Most Snow on the Ground (1955-2017)    
Most Recent Daily Data for June 21
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
2023  27.5 14.5 21.0 0.0 0.0 0.0      
2022  26.6 14.8 20.7 0.6 0.0 0.6      
2021  27.3 14.5 20.9 LegendMM   0.0   17 57
2020  30.9 16.8 23.9 0.0 0.0 0.0      
2019  25.0 14.8 19.9 0.0 0.0 0.0   1 37

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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