Almanac Averages and Extremes for May 21
TRENTON A
ONTARIO
Category (Period of Record) | Value | Year |
---|---|---|
Average Maximum Temperature | 19.4 °C | |
Average Minimum Temperature | 8.0 °C | |
Monthly Frequency of Precipitation | 40 % | |
Highest Temperature (1935-2023) | 29.4 °C | 1975 |
Lowest Temperature (1935-2023) | 0.6 °C | 1936 |
Greatest Precipitation (1935-2023) | 39.6 mm | 1943 |
Greatest Rainfall (1935-2023) | 39.6 mm | 1943 |
Greatest Snowfall (1935-2023) | ||
Most Snow on the Ground (1955-2017) |
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 † | 21.8 | 10.0 | 15.9 | 0.0 | 0.0 | 0.0 | 21 | 33 | |
2022 † | 26.9 | 14.9 | 20.9 | 1.4 | 0.0 | 1.4 | 30 | 83 | |
2021 † | |||||||||
2020 † | 21.9 | 4.1 | 13.0 | 0.0 | 0.0 | 0.0 | |||
2019 † | 20.4 | 5.7 | 13.1 | 0.0 | 0.0 | 0.0 | 35 | 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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