2017 Long Range Weather Forecast for Oshawa, ON

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Complete 2017 Long Range Weather Forecast for the Southern Ontario Region, November 2016 to October 2017 includes week-by-week details. Instant access via digital download!

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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

SEPTEMBER 2016: temperature 16.5°C (2°C above avg.); precipitation 50mm (40mm below avg.); Sep 1-9: A few showers, warm; Sep 10-20: Scattered showers, cool; Sep 21-26: T-storms, then sunny, warm; Sep 27-30: Showers, turning cool.

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 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 will be cooler than normal, with near-normal precipitation.

Map showing Old Farmer's Almanac long range weather region number 3

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 2016 to October 2017

Temperature and Precipitation Graph