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

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.)

November 2020 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Nov 1-3Showers, mild
Nov 4-9Rain east, snow west, then sunny, cold
Nov 10-14Sunny, mild east; snow west
Nov 15-19Sunny, cold
Nov 20-27Snow showers, cold
Nov 28-30Showers, mild
Novembertemperature 2.5°C (1°C below avg. east, 2°C above west)
precipitation 100mm (avg. east, 50mm above west)

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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Worse Weather 2019

The weather this year of 2019 has been very intensely intense. With every snow storm then afterwards turns into a freaking Ice Storm and Wind Storm almost like a Tornado in Toronto Canada. Temperatures are like going from Summer like Temperatures to like deep Winter Temperatures like Siberia, Russia Temperatures.

August 2019

Getting married in August in Newcastle, ON. Predictions for the weather? I know we’re expecting cooler and rainer temps but just wondering if anyone had further insight.

August Forecast

This is a reply to Michelle. August will be slightly below normal temperature overall. August will start off warm and above normal but then late august will turn below normal. Precipitation will be above average and stormier then normal. I'm not sure on what day your wedding is on but I could forecast pretty accurately how it'd be like on that day/weekend. Or if there's a good chance of rain or not.

August wedding for me too!

August 24th in Peterborough area. Hoping for good weather, as wedding is by the lake! Please give all us August brides some good news!

Wedding August 10

Hi John,
We are getting married August 10 in Newcastle, ON. Any insight would be great!

August Forecast

Hi Michelle,
It's still a little bit too early for me to predict accurately how it'd be like on august 10th as of right now, but I could let you know sometime in early June. I can usually predict pretty well days that have a very high probability of precipitation and when the cooler and warmer days of the month will fall, but I usually know a couple months ahead of time with daily forecast. I'll try to let you know in a couple months from now if that's ok. Sorry for the wait.

Thank you!

Thanks for the reply John! I look forward to your response in June!!

Any update on weather for

Any update on weather for August 10 in Newcastle, ON?

2019 forcast

This weather this year , really started in February 8 lots of storm and someone wish came true lots of snow . We had a big system coming this weekend on the 23 to Sunday, which really is some interesting weather . 6 degrees than lots of rain , than freezing rain , than huge storm of snow and to make it worst , high winds of 90 plus. Am in low land of hanover, lots of floods, my concern are where is all this snow is going to go . I have at least 3 ft all around my home . Really this year we had some bad storms. And more to come .please let me know what June and August forecast is .Looking forward to a large greenhouse this year.. Thanks Linda


El Nino is here babies!!
Another 1 month of winter left!