The famous Old Farmer’s Almanac weather predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.
Weather Predictions for Southern Ontario
October 2016: temperature 13°C (4°C above avg.); precipitation 65mm (avg.)
Oct 1-6: A few showers, cool
Oct 7-19: Several showers, warm
Oct 20-24: Sunny, warm
Oct 25-31: Showers, then flurries, turning cold
Annual Weather Summary: November 2016 to October 2017
Winter will be colder than normal, with above-normal precipitation and snowfall. The coldest periods will be in early to mid-January, late January, and late February, with the snowiest periods in mid- and late December, early January, and mid-February. April and May will be drier than normal, with near-normal temperatures.
Summer 2017 will be cooler than normal, with rainfall above normal, except in eastern Ontario. The hottest periods will be in mid-July and mid-August.
September and October 2017 will be cooler than normal, with near-normal precipitation.