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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September 7 Outdoor Festival

and sorry - the festival would be in TORONTO, ON.

The Latter

The Editors's picture

Hi, Sara: We’re actually showing a little wet and a little cool, but no prob! Just means more hot food and more hot dancin’! Good luck to all and thanks for asking!

Oct 12 2019 Wedding

Getting married Thanksgiving weekend in Milton, ON. Hoping for an outdoor ceremony! What's our chances?

Congratulations!

The Editors's picture

Hi, Kimberly: Your chances for a happy marriage are 100%, take it from us! And your chances for an outdoor ceremony are great, too, although we would suggest considering seat warmers, as it might be cooler, even with a few of those F-words (uh, flurries). That’s the bad news. The great news is that this is right before a beautiful sunny spell, so if our forecast slides back in time just a little, you are into the clear in all senses of the word. Either way, it will be a wedding to remember, we’re sure!

Pig & Corn Roast

I’m having a Pig & Corn Roast with live entertainment in Rodney, Ontario on August 10th. Can you please let me know if I need tents or are we looking for a fabulous day and evening ☀️
Thank you!

Tents Subject

The Editors's picture

Hi, Margie: You are looking at a fabulous day and evening for sure! But maybe with a tent or two, as we are looking at some T-storms and maybe it not being really super hot. Plus heavy drool. Plus blizzards of napkins. Have fun and thanks for asking!

Really worried for June 27th outdoor wedding!!!

Looks like my wedding day is the one day their might be thunderstorms... any more accurate predictions than weather network and accuweather?? It's in Windsor, ON!

June 27

Hi Nella, June 27th is predicted to be a rain free day. It should be a nice day weather wise for a wedding but I don't control the weather lol, but there's a bigger chance of no rain then rain so that should be good news for you.. hopefully.

Weather forcast for September 14th 2019

Planning a Milestone party for my Spouse
Out doors in port mcnicoll midland Ontario.

July 20th outdoor wedding

Hi, Any idea the weather forecast for July 20th? My daughter is getting married outdoors in Astorville, On. We are hoping for a beautiful day :) thank you!

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