2020 Long Range Weather Forecast for Hamilton, ON

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 Hamilton, ON

Reader Comments

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Looking for East of Ontario

Trenton / Belleville / Kingston and on to Ottawa.

Region Missing

Does anyone know how to view the forecast for the Lake Superior region of Ontario? When I type in names of towns along the north shore of Superior I get directed to this Southern Ontario page for some reason. I can't seem to find the Northern Ontario regional forecast page.

Southern Ontario Weather Forecast

It does not seem that the May weather is happening as forecast. We live in Barrie and it has been ..thus far..much cooler than predicted. Would be nice to be able to plan outdoor activities and be reasonably confident that if the forecast is shown as warm and dry .. that it will be.

Huh?

It says in the farmer's almanac will be above average for May. In Toronto, it says it's going to be a high of 4 degrees tomorrow (May 8). Isn't it EVER gonna warm up or is this as warm as it's ever gonna get? Does it have anything to do with the coronavirus? Needless to say, 4 degrees and a few other single digit high days in a row does not sound like above normal. I am also concerned if it will be 30 degrees this month. May 11-21 says that it will be turning hot. Maybe they mean hot like 24 or 25 degrees, I mean, I don't consider that hot.

Wow 3 degrees above normal

Wow 3 degrees above normal for May. The weather network says cooler than normal. I think summer will be cooler not hotter. Also, you did great with your winter forecast which was mild.

May weather

May won't be above normal, at least the first week of May will be cooler than normal.

Southern Ontario Weather

What happened to Kingston?

weather

So far spring has not sprung.......too much snow left!

Northern & Southern Ontario

Here in Ontario the north starts as you enter the Nipissing Parry Sound District which is south of Sudbury not north of Thunder Bay. Anything in Southern Ontario is one to two weeks ahead of Northern Ontario (north of Parry Sound) in terms of warming up in the Spring. You really need to get your calendar fixed!

Temp

I have to be honest you guys were way off about this month of March. Most of the month is foretasted to be above normal and you have it several degrees below normal.

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