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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 Alpena is 48.5°F (9.2°C). The warmest month, on average, is July with an average temperature of 67.6°F (19.8°C). The coolest month on average is February, with an average temperature of 31.6°F (-0.2°C).
The highest recorded temperature in Alpena is 94.0°F (34.4°C), which was recorded in July. The lowest recorded temperature in Alpena is -19.0°F (-28.3°C), which was recorded in December.
The average amount of precipitation for the year in Alpena is 55.6" (1412.2 mm). The month with the most precipitation on average is July with 6.1" (154.9 mm) of precipitation. The month with the least precipitation on average is October with an average of 3.4" (86.4 mm). There are an average of 154.0 days of precipitation, with the most precipitation occurring in December with 16.0 days and the least precipitation occurring in October with 9.0 days.
In Alpena, there's an average of 103.5" of snow (262.9 cm). The month with the most snow is December, with 21.8" of snow (55.4 cm).