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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Ice storm not mentioned

Didnt see anything in April about an ice storm! Going on 2nd day now...so far have not lost power..touch wood....got lots of food, plenty of candles and the firewood is dry....bring it on Mother Nature....

There really WAS an ice storm

There really WAS an ice storm in April in Etobicoke. I’m not lying. They’re not always accurate.

lets see predictions so far of farmers almanac

So judging by information you posted for Ontario, November was a lot warmer, you said it would be a lot cooler. December was very cold you posted it would be average. January was extremely cold, coldest in decades, many broken records for consecutive -10 degrees days were broken you predicted january being extremely warm. February was very warm, you predicted it will be cold. March was 1-2 degrees colder than average, you predicted extremely warm march. April so far extremely cold, you predicted neutral. So far this year you are 0/6. and you are not just wrong...no. you are completely wrong by complete opposite extremes. are you not ashamed to call yourself a professional?

Get a life

Get a life its a prediction not facts. You sound like a little boy with no profession. Farmers almanac has been around for ever and there summer predictions ( all i care about for farming) have been correct for years. Plus me and almanac are talking about a general consensus of the month and a season. Not a specific day in the future. Have a great day with your "proffesion"!

this is by far the worst prediction i ever witness in my life

For as long as I lived I have never seen less accurate weather than this. this should be criminal to post lies like this. I am in ontario and we had cold cloudy/rainy/snowy days the first 2 weeks. maybe 3 half days of sun and next 9/10 days supposed to be more rain 0 hours of sun.
. farmer predicted less than average precipitation and average temperature. well it looks like it will be the rainiest/snowiest April on record and 5 degrees cooler than normal. You lost all my credibility. If i knew I could of booked a vacation south. I need sun I have a very bad case of SAD.


Logically, the weather is "GOING TO DO WHAT IT'S GOING TO DO!"..... Enjoy it for what it is!! If it's sunny and cool or sunny and hot...it sure as heck beats the Winter and it's cloudy, dreary days. I have had S.A.D.S since childhood and ANY SUNNY DAY in Spring or Summer or Autumn - warm or cool or blistering hot beats the depressing days of Winter! BUT..... this IS CANADA and I still love this country despite it's dull, gray Winters!

What does SADS mean?

What does SADS mean?


Give me hot summer days and mild winters. I live in Northern Ont. and the winters can be a tad too long for my liking. We spend the month of April in Florida and love the heat!


It means Seasonal Affective Disorder and I suffer from it.....some winters are worse than others for me! Taking Vitamin D helps.

I absolutely can't stand when

I absolutely can't stand when people whine and complain about the weather not being boiling hot!! Stop blaming the weather person!! They aren't Mother Nature!!!! Who wants boiling hot weather just to spend all day trying to cool off in ac???!! I hate boiling hot weather and every month should feel like autumn!!!!!! Boo hoo I hope the summer is cool as possible!!!!