2020 Long Range Weather Forecast for Southern Ontario

Get the Long Range Weather for Your Location

See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of The 2021 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

September 2020 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Sep 1-4Showers, cool
Sep 5-8T-storms, then sunny, cool
Sep 9-15Rainy periods, cool
Sep 16-25A few showers, cool
Sep 26-30Sunny, turning warm
Septembertemperature 14°C (1°C below avg.)
precipitation 60mm (30mm below avg.)

October 2020 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Oct 1-9Showers, mild
Oct 10-14Showers east, sunny west; cool
Oct 15-19Rainy, mild
Oct 20-25Showers east; sunny, mild west
Oct 26-31Showers, mild
Octobertemperature 12°C (2°C above avg.)
precipitation 85mm (10mm above avg.)

Annual Weather Summary
November 2019 to October 2020

Winter temperatures, precipitation, and snowfall will be above normal. The coldest periods will be in mid- to late November, January, early and mid- to late February, and early March. The snowiest periods will be in early and mid-December, mid- to late January, mid-February, and early March. April and May will be warmer than normal, with precipitation above normal in the east and below normal in the west. Summer will be hotter than normal, with the hottest periods in late June and early to mid- and mid- to late July. Precipitation will be above normal in the east and below in the west. September and October will be slightly warmer and drier than normal.

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, 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 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Southern Ontario Region

Reader Comments

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Thunder Bay

The Editors's picture

Hi, Janet,  Thunder Bay is easily within our coverage area. This free Web site is a companion to The Old Farmer’s Almanac publication. Every month, we post the current month’s and next month’s long-range prediction, courtesy of The Old Farmer’s Almanac. You can find all 12 months in the Almanac itself: https://www.almanac.com/wheretobuy

weather

So far the forecast for November is spot on where I am..not far from Huntsville ont..so in the area..so far so good..read your forecast for years..pretty accurate if you ask me...Thanks Farmers Almanac

More local forecasts

I really like these forecasts, but I do wish the regions were more localized. The weather can be very different in Windsor vs Toronto or Elliott Lake! Thank you.

Weather so far

Where I live (above the snow belt) the almanac has been spot on.
Good job

Weather

Sudbury is not located in southern ON and the forecast is not accurate. We are having our first major snow storm and there is no indication of this on your prediction.

Englehart too !

I agree with you, very inaccurate information here. We have over 3" so far today.

sudbury

sudbury sure is southern ontario! Mid at best...

Big Thanks

I would like to thank you for your long term weather forecasts. I look forward to them all the time, and I am so glad that you are 90% accurate. It gives me time to prepare for the bad weather in lower Ontario.

Thanks again, and have a good one.

Thunder Bay

Thunder Bay is not Southern Ontario, it's North Western Ontario, the weather is completely different there. This won't be accurate for anyone past North Bay.

Long Range weather - Canadian Thanksgiving

Hello!.. I have been seeing others' requests for long-range weather forecasts and wondered if it would also be possible to find out more for the Orangeville area over the Canadian Thanksgiving weekend? - October 11-14, 2019. Thank you so much!

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