2021 Long Range Weather Forecast for Trenton, 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

January 2021 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Jan 1-5Flurries, cold
Jan 6-12Snow, then flurries; cold
Jan 13-19Snow showers, cold
Jan 20-25Flurries, cold
Jan 26-31Lake snows, cold
Januarytemperature -10°C (3°C below avg.)
precipitation 75mm (15mm above avg.)

February 2021 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Feb 1-7A few showers, quite mild
Feb 8-15Periods of rain and snow east, snow west; mild
Feb 16-20Sunny, mild
Feb 21-28Rain and snow showers east, flurries west; turning cold
Februarytemperature -2°C (3°C above avg.)
precipitation 85mm (25mm above avg.)

Annual Weather Summary
November 2020 to October 2021

Winter temperatures will be slightly below normal in the east and slightly above normal in the west, with the coldest periods in early to mid-December, from late December into early January, and in mid- and late January. Precipitation and snowfall will be much above normal, with the snowiest periods in mid-December, early to mid-January, and early to mid-March. April and May will be cooler and rainier than normal in the east and warmer and drier in the west. Summer will be slightly cooler and rainier than normal in the east and hotter with near-normal rainfall in the west. The hottest periods will be in early June and mid-August. September and October will be cooler than normal, with near-normal precipitation.

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 2020 to October 2021

Temperature and Precipitation Chart, November 2020 to October 2021 for Trenton, ON

Reader Comments

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You obviously don’t spend time outdoors

Spending time out in the hot sun will always be better than a cool summer .. Whether you’re at the beach or out in your backyard, nothing beats a summer’s day in the sun. I’d sacrifice a bit of cash for the AC to have warm summers any day.

I hear ya sista!!! I can't

I hear ya sista!!! I can't stand the hot, humid weather.

Hot weather

We lived 50 years ago with no Ac in the summer and had wood stoves too heat the homes. Suck it up butter cups .. I want summers at 35 and winters at -35. We are Canadians.

Yes!

We are ineed, Canadians! Heat and extreme cold! Enjoy it all!

HOT

I LOVE HOT WEATHER , IS MAKE ME HAPPY , COLD WEATHER MAKE ME SAD .. HOT WEATHER BRING OUT PPL OUT AND LOTS OF VITAMIN D TO PPL .. :D

Be calm. Don’t use so many !

Be calm. Don’t use so many !’s. It’s annoying me. I understand that you don’t like when people complain about weather. But it’s the internet, so get over it.

Weather

You lied to me. So said that March will be above average but it was below average. March wasn't as warm as February. You should be ashamed of yourself. I thought it was gonna be 20 degrees celsius in March. It was only single digit highs that time.

March Weather

It was spot on. As chilly as it was it was still above average. The March weather is usually a crap shoot, but this year's prediction was good enough for the girls I go out with.

Every weather forecast is a

Every weather forecast is a "crap shoot". They called for a warmer than usual spring/ March and April. So far the weather has trended colder than the historical average.....Meteorologists are like fortune tellers...Very inaccurate, especially over the long haul. The Farmer's Almanac is even worse.

lol. I feel you. I want it to

lol. I feel you. I want it to be warmer too. I can't stand the depressing cold weather especially since it is already April. Not all weather forecast predictions are accurate so you can't blame the people who own this website. Hold on, it should be getting warmer soon. The cold can't stay with us forever. ;)

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