2020 Long Range Weather Forecast for Hamilton, 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 2020 Old Farmer’s Almanac, available online and in stores.

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

Free 2-Month Weather Forecast

July 2020 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Jul 1-7A few showers, warm
Jul 8-13Scattered t-storms, hot
Jul 14-18T-storms, warm
Jul 19-24Isolated t-storms, turning hot
Jul 25-28A few t-storms, hot
Jul 29-31Sunny, cool
Julytemperature 22°C (1°C above avg.)
precipitation 100mm (50mm above avg. east, 10mm below west)

August 2020 Long Range Weather Forecast for Southern Ontario
DatesWeather Conditions
Aug 1-6Showers, hot
Aug 7-14T-storms, then sunny, cool
Aug 15-22A few t-storms, warm
Aug 23-31Showers, cool
Augusttemperature 20°C (1°C below avg. east, 1°C above west)
precipitation 95mm (60mm above avg. east, 30mm below west)

Annual Weather Summary
November 2019 to October 2020

Winter temperatures, precipitation, and snowfall will be above normal. The coldest periods will be in mid- to late November, January, early and mid- to late February, and early March. The snowiest periods will be in early and mid-December, mid- to late January, mid-February, and early March. April and May will be warmer than normal, with precipitation above normal in the east and below normal in the west. Summer will be hotter than normal, with the hottest periods in late June and early to mid- and mid- to late July. Precipitation will be above normal in the east and below in the west. September and October will be slightly warmer and drier 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 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Hamilton, ON

Reader Comments

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JULY 18-20 VIDEO SHOOT

I'm planning an outdoor video shoot on July 18 and 19 with a weather day on July 20. What will the weather look like around those days?

JULY 18-20 VIDEO SHOOT

I forgot to add that the shoot will be in Ancaster from July 18-20. Thank you!

Aw, Shoot!

The Editors's picture

Hi, Cait: Looks like sunny and warm to us, but showers coming in on the 21st… have fun and thanks for asking!

August 10 wedding

Having an outdoor wedding August 10 in Bowmanville/Newcastle area. What will the weather be like?

Aug 24 Wedding

Hello :) ... curious to know what kind of weather I might hope to expect on my big day this year. The ceremony will be outdoors in Ajax.

The Weather

Can you tell me what the weather will be on the Labour Day long weekend in Windsor, ON, specifically on August 31 and September 1?

September 7 Outdoor Festival

Looking to throw an outdoor neighbourhood festival on Saturday, September 7. Are we looking at a sunny day, or rainy and cool? Thx!

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?

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