Definitions
The monthly mean of the daily (24 hour) temperature.
The monthly mean of the maximum daily temperature.
The monthly mean of the minimum daily temperature.
This is the mean monthly precipitation, including rain,
snow, hail etc.
The cumulative number of degrees in a month or year by which the mean
temperature falls below 18.3°C/65°F.
The cumulative number of degrees in a month or year by which the mean
temperature is above 18.3°C/65°F.
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