Long-range Weather Forecast

Southern Ontario

Annual Weather Summary
November 2008 to October 2009

Southern Ontario Long-range Weather Region

Winter will be slightly milder and noticeably drier than normal, with below-normal snowfall, except in southwest Ontario. The coldest temperatures will occur in mid-December, mid-January, and mid-February. The heaviest snows will fall in early and late December, mid- and late January, and mid-March.

April and May will be slightly warmer and wetter than normal.

Summer will be cooler and drier than normal, with the hottest temperatures in mid- to late June and early and mid-July.

September and October will be cooler and drier than normal.

Detailed Forecast for the Next Two Months

July 2009

Avg. Temperature: 21.5°C (1°C above avg.)
Precipitation: 70mm (40mm below avg.)
Jul. 1-4: Sunny, hot
Jul. 5-8: T-storms, then sunny, cool
Jul. 9-12: Showers, then sunny, hot
Jul. 13-17: Scattered showers, very warm
Jul. 18-21: Sunny, hot
Jul. 22-26: T-storms, then sunny, comfortable
Jul. 27-31: Showers, seasonable
 

August 2009

Avg. Temperature: 17°C (2.5°C below avg.)
Precipitation: 115mm (30mm above avg.)
Aug. 1-3: Sunny, cool
Aug. 4-16: Scattered t-storms, cool
Aug. 17-21: Sunny, seasonable
Aug. 22-27: T-storms, then sunny, cool
Aug. 28-31: Showers, then sunny, seasonable

Temperature and Precipitation
November 2008 to October 2009

Temperature and Precipitation Graph

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