Ontario's climate is characterized by mild springs, warm summers, and cool autumns. The winter months, January through March, are generally cold with temperatures ranging from just above freezing to mid-teens Celsius. As the seasons shift, spring arrives in April, bringing warmer temperatures that gradually increase into May and June, which mark the beginning of summer with average highs often reaching the mid-twenties to low thirties. Summer months see temperatures peak in July and August, with averages hovering around 26 degrees Celsius, before slowly declining as autumn sets in. In the fall, September and October bring comfortable temperatures, while November and December usher in cooler conditions, with winter's chill starting to set in once more.