2019 Long Range Weather Forecast for London, 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 2019 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

July 2019 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Jul 1-4Showers, hot
Jul 5-6Sunny, cool
Jul 7-13Scattered t-storms, hot
Jul 14-20Sunny, warm
Jul 21-31A few showers, cooler
Julytemperature 21°C (avg.)
precipitation 110mm (30mm above avg.)

August 2019 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Aug 1-8Scattered showers, warm
Aug 9-12T-storms, cool
Aug 13-17Scattered t-storms, hot
Aug 18-26A few showers, cool
Aug 27-31Sunny, cool
Augusttemperature 19°C (1° below avg.)
precipitation 100mm (20mm above 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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September 7 Outdoor Festival

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

The Latter

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!

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

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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