What is the long range weather forecast for Leamington, ON?

The Old Farmer's Almanac provides a 60-day extended weather forecast for Leamington, ON. This includes temperature trends, precipitation predictions, and seasonal weather patterns based on our traditional forecasting methods combined with modern meteorological science.

How accurate is the Almanac long range weather forecast?

The Old Farmer's Almanac claims an 80% accuracy rate for its long range forecasts. Our forecasting method uses a secret formula that considers sunspot activity, tidal action, and other factors along with current meteorological conditions.

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Long-Range Weather Forecast for Leamington, ON

Location Leamington, ON

60-Day Weather Forecast

September 2026 Long Range Weather Forecast for Southern Ontario
Dates	Weather Conditions
Sep 1-4	Sunny east, rainy west; cool
Sep 5-8	T-storms, warm
Sep 9-16	Showers east, sunny west; cool
Sep 17-23	Showers, then sunny; cool
Sep 24-30	Rainy, chilly
September	temperature 15°C (1°C below avg.) precipitation 115mm (25mm above avg.)

October 2026 Long Range Weather Forecast for Southern Ontario
Dates	Weather Conditions
Oct 1-6	Sunny, chilly
Oct 7-14	Rainy periods; warm, then chilly
Oct 15-21	Rainy periods east, rain and snow showers west; chilly
Oct 22-31	A few showers east, sunny west; warm
October	temperature 11°C (avg.) precipitation 90mm (40mm above avg. east, 20mm below west)

Map showing Old Farmer's Almanac long range weather region number 3

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter will be colder and drier than normal in the east with below-normal snowfall, while it will be warmer than normal in the west with above-normal precipitation and snowfall. The coldest periods will be in mid- and late December, early and late January, and early February, with the snowiest periods in late November and early and mid-February. April and May will be cooler than normal, with above-normal precipitation in the north, below-normal south. Summer will be cooler than normal in the east and warmer west, with the hottest periods in late June and early July. Precipitation will be above normal. September and October will be cooler than normal, with above-normal precipitation.

See the complete 12-month weather forecast in The Old Farmer’s Almanac..

Weather Trend Graph

November 2025 to October 2026