Weather for Kingston

Kingston enjoys a mild climate due in major part to its strategic location (44°13' N, 76°36' W) at the junction of Lake Ontario and the St. Lawrence river, with four distinct seasons. Average winter temperatures of -8C and average summer temperatures of 24C.

In the spring and fall the lake moderates air temperatures along its shores. Frost hazard is reduced and the growing season lengthened. Most of the summer daytime cooling can be attributed to the influence of the lake river breeze effect. The bodies of water also influence the humidity of the air and the aerial distribution of cloud and precipitation. In the early spring, fall, and early winter there tends to be greater cloud development over Lake Ontario.

In the summer, daytime showers and thunderstorms are more likely to form over the warmer land. In the winter, before freeze up sets in, the cold air blowing off the land over the relatively warm waters of the river and lake causes the so-called "lake-effect snowstorms.

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