2018 Long Range Weather Forecast for Southern Ontario
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How to Read Long-Range Weather Forecasts
Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area? Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.
Here on Almanac.com, we provide free long-range forecasts for the next 30 to 60 days covering U.S. and Canadian regions. Find all 12 months of predictions in the annual Old Farmer's Almanac.
Free 2-Month Weather Forecast
AUGUST 2017: temperature 19°C (0.5°C below avg.); precipitation 100mm (15mm above avg.); Aug 1-10: A few t-storms, cool; Aug 11-22: A few t-storms, warm; Aug 23-25: Sunny, hot; Aug 26-31: Showers.
SEPTEMBER 2017: temperature 15°C (0.5°C above avg.); precipitation 90mm (avg.); Sep 1-2: Rainy, warm east; sunny, cool west; Sep 3-12: Scattered showers, turning warm; Sep 13-17: T-storms, then sunny, cool; Sep 18-25: Showers, cool; Sep 26-30: Scattered showers, warm.
Annual Weather Summary: November 2017 to October 2018
Winter temperatures will be above normal, with the coldest periods in mid-November, early and late December, early January, and early and mid-February. Precipitation and snowfall will be above normal in the east and below normal in the west, with the snowiest periods in late November, mid- and late December, and early to mid-March. April and May will be a bit cooler than normal, with near-normal precipitation. Summer will be hotter than normal, with rainfall below normal in Southwest Ontario and above normal elsewhere. The hottest periods will be in early and late June, early July, and mid- to late August. September and October will be warmer and slightly drier than normal.
About the Southern Ontario Region
The Southern Ontario long range weather region includes all or part of the following provinces: ONTARIO (Alliston, Amherstburg, Barrie, Bolton, Bradford, Brantford, Chatham, Cobourg, Collingwood, Elliot Lake, Fergus, Fort Erie, Georgetown, Guelph, Haileybury, Hamilton, Ingersoll, Kenora, Kitchener, Leamington, Lindsay, Lindsay, London, Midland, Milton, North Bay, Orangeville, Orillia, Oshawa, Owen Sound, Paris, Peterborough, Port Hope, Sarnia, Simcoe, Stouffville, Stratford, Strathroy, Sudbury, Thunder Bay, Tillsonburg, Timmins, Toronto, Uxbridge, Wallaceburg, Windsor, Woodstock).
Southern Ontario Neighboring Regions
Here are the regions that neighbor the Southern Ontario long range weather region:
Temperature and Precipitation November 2017 to October 2018
