Oakville Climate

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Climate

Oakville's climate is generally continental with warm humid summers and cold, dry winters. This is moderated by the proximity of Lake Ontario, which tends to reduce temperature extremes. Monthly mean temperatures range from 22 degrees centigrade in July to -5 degrees centigrade in January. The annual precipitation in Oakville consists of about 28 inches of rain and 51 inches of snow. Easterly winds off the open waters of Lake Ontario may add substantially to local snowfall however the prevailing winds are from the southwest. The average date for a late frost is May 3rd, and the first autumn frost occurs about the 15th day of October.