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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Pine Cones

It means that it won't be a cold winter****** haha

pine cones

I just flew up from Fl and visited my cottage in Georgian Bay Cawaja Balm Beach area for TG week . The weather was gorgeous! Didn't notice a lot of pine cones but noted tons of acorns , which, my brother refers to as little Scottish Boys in their tams lol But want to come back for Christmas hipimf for some snow ?

2020

When will the 2020 long-range weather forecast be released here? I am really curious to see what happens next year. Really looking forward to the 2020 Forecast!

2020 Forecast

The Editors's picture

The 2020 Old Farmer’s Almanac will be released in just a few weeks! It’s available for pre-order from our store now: https://store.almanac.com/almanacs

Ok, Thanks

Ok, Thanks

October 6, 2019

Tell me good things for my outdoor wedding in Toronto!
If rain is in my forecast...what are the chances it will shift? When will we have a more accurate idea?

Outdoor Wedding August 10

Having an outdoor wedding August 10 in Bowmanville area. Just curious what the weather will be? Any insight would be great!

Wedding

I’m getting married August.24th 2019 in Hamilton Ontario! Wondering if it might rain on that day!??
Thank you!! ❤️

Weather for Sept. 14/19

Planning an outdoor wedding and wonder if you can give me a forecast for that day?

Long range weather

How’s the weather going to be around September 4-5?

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