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Under the Köppen Climate Classification climate classification, "dry-summer subtropical" climates are often referred to as "Mediterranean". This climate zone has an an average temperature above 10°C (50°F) in their warmest months, and an average in the coldest between 18 to -3°C (64 to 27°F). Summers tend to be dry with less than one-third that of the wettest winter month, and with less than 30mm (1.18 in) of precipitation in a summer month. SMany of the regions with Mediterranean climates have relatively mild winters and very warm summers.
The Köppen Climate Classification subtype for this climate is "Csb". (Mediterran Climate).
The average temperature for the year in Wenatchee is 51.0°F (10.6°C). The warmest month, on average, is July with an average temperature of 74.0°F (23.3°C). The coolest month on average is January, with an average temperature of 27.0°F (-2.8°C).
The highest recorded temperature in Wenatchee is 109.0°F (42.8°C), which was recorded in August. The lowest recorded temperature in Wenatchee is -12.0°F (-24.4°C), which was recorded in December.
The average amount of precipitation for the year in Wenatchee is 8.4" (213.4 mm). The month with the most precipitation on average is December with 1.2" (30.5 mm) of precipitation. The month with the least precipitation on average is September with an average of 0.0" (0 mm). In terms of liquid precipitation, there are an average of 25.7 days of rain, with the most rain occurring in December with 3.7 days of rain, and the least rain occurring in September with 0.2 days of rain.
In Wenatchee, there's an average of 27.3" of snow (69.3 cm). The month with the most snow is December, with 10.4" of snow (26.4 cm).