Ann Arbor has a typically Midwestern humid continental seasonal climate, which is influenced by the Great Lakes. There are four seasons, with winters being cold with moderate snowfall while summers can be warm and humid. The area experiences lake effect, primarily in the form of increased cloudiness during late fall and early winter.
The highest average temperature is in July at 83 °F (28 °C) while the lowest average temperature is in January at 16 °F (−9 °C). However, summer temperatures can top 90 °F (32 °C), and winter temperatures can drop below 0 °F (−17 °C). The highest recorded temperature was 105 °F (40.6 °C) on July 24, 1934, while the lowest recorded temperature was −22.0 °F (−30 °C) on January 19, 1994.
Average monthly precipitation ranges from 2 to 4 inches (44 to 92 mm), with the heaviest occurring during the summer months. Snowfall, which normally occurs from November to April, ranges from 1 to 10 inches (3 to 25 cm) per month.