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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Summer 2019

Summer 2019 definitely hasn't been cool and rainy as predicted for Southwestern Ontario. It's been very hot and humid with drought conditions, which can always be expected for that area.

Not sure where you are

Not sure where you are located but we have only had to water our vegetable garden a few times this year because of so much rain. No drought like problems just north of london Ontario. If anything it was too much water which caused havoc in the garden.

Precipitation

I live in Brant County, which is probably the driest area in all of Ontario. We have had very little rain since May. The grass was looking very yellow by early August. It"s better now though due to overnight moisture this time of year Most systems go around us or dissipate as they near due to the lower land elevation and not being too close to any of the Great Lakes. And it's the same during the winter; very little snow falls here. It's prone to drought year-round. We did have a very unusual rainy period from late January to May this year. It was very much needed though due to years of drought. And as a result, the vegetation and wildlife are very healthy and abundant this year; and their health is what's most important. So we are grateful when it rains.

I agree with you.

too much rain.

wet and cool

Where are you. Where i live it was wet and cool. and i live in southern Ontario.

rain.

I live below you and it wouldnt stop raining. we never had to fill our cisten. I didnt have to water my trees and plants. and it was cool only turned on air conditioner maybe six times.

2019 observation

We have noticed that there are no pine cones on the pine trees in our cottage property near Georgian Bay. Could you advise as to what this might mean for squirrels and such this winter. What is Mother Nature telling us?

pine cones

Our Mother is saying that it won't be a cold summer!

Pine Cones

It means that it won't be a cold winter****** haha

pine cones

I just flew up from Fl and visited my cottage in Georgian Bay Cawaja Balm Beach area for TG week . The weather was gorgeous! Didn't notice a lot of pine cones but noted tons of acorns , which, my brother refers to as little Scottish Boys in their tams lol But want to come back for Christmas hipimf for some snow ?

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