2019 Long Range Weather Forecast for London, ON


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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 annual Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

August 2018 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Aug 1-5Scattered showers, warm
Aug 6-10Sunny, warm
Aug 11-18T-storms, then sunny, cool
Aug 19-28Scattered t-storms, hot
Aug 29-31Sunny, warm
Augusttemperature 22.5°C (3° above avg.)
precipitation 95mm (50mm below avg. east, 70mm above west)

September 2018 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Sep 1-7Sunny, turning cool
Sep 8-15Scattered t-storms, cool
Sep 16-20A couple t-storms, cool
Sep 21-30Scattered showers east, sunny west; warm
Septembertemperature 14.5°C (avg.)
precipitation 70mm (20mm below avg.)

Annual Weather Summary: November 2018 to October 2019

Winter temperatures will be close to normal, on average, with above-normal precipitation and snowfall. The coldest periods will be in mid- and late December, early and late January, and early February. The snowiest periods will be in early December, mid-February, and early to mid-March. April and May will be cooler than normal, with above-normal precipitation. Summer will be cooler and rainier than normal. The hottest periods will be from late June into early July and in early to mid-July and mid-August. September and October will be cooler and rainier 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 2018 to October 2019

Temperature and Precipitation Chart, November 2018 to October 2019 for London, ON

Reader Comments

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Will this summer be a repeat of 1992?

I was just wondering if this summer will be a repeat of 1992 because I heard that 2019 will be a grand solar minimum. Solar minimums cool the entire globe.


are people really fighting in the comments of the the old farmer's almanac website? for real, y'all? relax.


I have just noted that You have lumped all the cities into one area for S..Ont,..WRONG!!,.My weather is nothing like Toronto,.Perry Sound etc,.I live in Algoma Mills which is in-between Sudbury & Sault Ste Mare,Which
is in NORTHERN Ont,.near Elliot Lake,.& even their weather is different,...The weather here is completely different then what you are stating,..Plz get your facts straight & direct the info to the proper areas,.!!..


Wow!!!!! Why are people fighting on here??? It’s just a website that forecast the weather for the year, not Facebook! Not big deal they lumped you in with a another region. It’s simple and minor mistake.


Why?? are you stating the weather for S.Ontario the same for N.Ontario???...Our weather is completely different then that of S.Ont,..

Weather opinions

Travel the world a little folks. Water is like gold in some parts with that goes food. Stop your bitching. Do like in the old days..." dip your finger in the well, shove it out the door see from which direction the wind is coming from" even sailors do this one. Think as to which direction warm,cold, wet or dry comes from per season and then dress up or dress down accordingly.

Really ? How very nice.

First time on this site and I thought I would read the comments . Wow . I can't believe how insulting people are to other people.

Truth be told , no one , yes I said no one , can predict the weather . It is the only job out there where the predictions can be wrong 98 % of the time and those predicting it still keep their jobs. In any other profession ,if that many mistakes were made, they would be fired long ago.

The best solution is to step out your door. If it is windy and cool put on a jacket , if it is stinky hot and humid , shorts and tee shirt works, if it snowing , sleeting , freezing rain .....dress accordingly and drive accordingly.

Oh, and stay away from nasty people . They deserve to spend their time with themselves. .

Weather is weather

Let's see simmer is hot winter is cold lol
Enough said

It's just weather

Why are people arguing in a weather forum? I wouldn't live anywhere else! Enjoying all 4 seasons, and the unpredictability of our weather makes me appreciate every day.


very lucky live this part the world we have to drink .we very blessed in this part the world