2019 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 2019 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

April 2019 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Apr 1-4Sunny, cool
Apr 5-11Rain, then sunny, mild
Apr 12-14Sunny, cool
Apr 15-19Rain, then sunny, cool
Apr 20-24Showers, warm
Apr 25-30Rainy periods, cool
Apriltemperature 6°C (1° below avg.)
precipitation 80mm (10mm below avg. east, 40mm above west)

May 2019 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
May 1-4Rainy east, sunny west; cool
May 5-11Rainy periods, cool
May 12-14Sunny, cool
May 15-23A few showers; warm, then cool
May 24-28Sunny, cool
May 29-31Showers, warm
Maytemperature 10.5°C (2° below avg.)
precipitation 95mm (20mm above avg.)

Annual Weather Summary
November 2018 to October 2019

Winter temperatures will be close to normal, on average, with above-normal precipitation and snowfall. The coldest periods will be in mid- and late December, early and late January, and early February. The snowiest periods will be in early December, mid-February, and early to mid-March. April and May will be cooler than normal, with above-normal precipitation. Summer will be cooler and rainier than normal. The hottest periods will be from late June into early July and in early to mid-July and mid-August. September and October will be cooler and rainier 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 2018 to October 2019

Temperature and Precipitation Chart, November 2018 to October 2019 for Southern Ontario Region

Reader Comments

Leave a Comment

Late June Forecast

This is a reply to Brooke. The last few days of June will most likely be very warm. A good chance it'll be around 30 C. June is predicted to be below normal but it'll most likely start to get very warm the last few days and carry over into most of July. It'll most likely rain a bit over that weekend but most of the weekend will be sunny. I'd know better in a good month from now

outdoor tent celebration on august 28/29

planning an outdoor (tent) celebration on either august 28/ 29th
too cool? rainy?

Late August Forecast

This is a reply to Susie. There's probably a better chance of no rain on the 28th then the 29th because it's further away from the august 30th new moon. The labour day weekend will most likely see some rain so good chance it'll be dry a few days before the long weekend. The temperature is normally around 24 C around that time and even if it's a few degrees below it's still comfortable. By the way, late august is typically the calmest period of the year.

Something has to be done about global warming

I lived in Toronto all my life, and the winters in my childhood were a lot snowier and a lot colder than they are now. I mean the difference is very huge now compared to many years ago, so I am hoping a return to our old fashioned normal winters where normal lows ranged for -19c to - 31c before the windchill.

September weather

We have an outdoor wedding planned in Parry Sound, Ontario September 7. Any predictions for then??

September Forecast

This is a reply to Kathy. September will be normal/ near normal temperature but it could feel below normal, especially after the past few September's have been way above so it'll feel cool for a change. Precipitation will most likely be below normal but not by much. The September 7-8 weekend will most likely be around 20 C and sunny but would know better around 2 months before then. The following weekend (14-15) will most likely see rain and cooler temps but it should be pretty comfortable on the 7 and 8th but again would know better closer to that date.

Why are most of the temperatures below average?!

WHAT’S HAPPENING HERE?! Is our climate getting colder and colder? I don’t like the look of most of the temperature being below average and most of the precipitation ABOVE average. I would rather it be the other way it is. Every month when the temperature is above average, it feels colder and every time the temperature is below average, it feels warmer. I don’t want our climate to get colder.

If you don't like the cold

If you don't like the cold weather than move.
That's what makes Canada so great. Change of seasons.

Toronto Winter

Most snow accumulation since 1968, February being the worst month. Good old fashion winter--just as I remember from the 60's/70's growing up in Bradford, Ontario. We use to get severe ice storms back then as well.

Bad bad bad

So basically were going to have an awful year of weather. Time to gtfo.

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