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This climate climate zone covers from about 44°N to 50°N latitude mostly east of the 100th meridian in North America. However, it can be found as far north as 54°N, and further west in the Canadian Prairie Provinces and below 40°N in the high Appalachians. In Europe this subtype reaches its most northerly latitude at nearly 61° N. Areas featuring this subtype of the continental climate have an average temperature in the warmest month below 22°C (22°F). Summer high temperatures in this zone typically average between 21-28°C (70-82°F) during the daytime and the average temperatures in the coldest month are generally far below the -3 °C (27°F) mark.
The Köppen Climate Classification subtype for this climate is "Dfb". (Warm Summer Continental Climate).
The average temperature for the year in Sumy is 45.0°F (7.2°C). The warmest month, on average, is July with an average temperature of 66.0°F (18.9°C). The coolest month on average is January, with an average temperature of 20.0°F (-6.7°C).
The highest recorded temperature in Sumy is 93.0°F (33.9°C), which was recorded in July. The lowest recorded temperature in Sumy is -27.0°F (-32.8°C), which was recorded in January.
There are an average of 173.0 days of precipitation, with the most precipitation occurring in December with 22.0 days and the least precipitation occurring in August with 10.0 days.
In terms of liquid precipitation, there are an average of 121.0 days of rain, with the most rain occurring in April with 12.0 days of rain, and the least rain occurring in February with 5.0 days of rain.