Long-range Weather Forecast

Southern Ontario

Annual Weather Summary
November 2007 to October 2008

Southern Ontario Long-range Weather Region

Winter temperatures will be about one degree Celsius above normal, on average, with the coldest periods in early and mid-December, mid- and late January, early and mid-February, and early March. Precipitation will be below normal in Southwest Ontario, Metro Toronto, and the Cottage Country, and near or slightly above normal elsewhere. Snowfall will be below normal, with the snowiest periods in early December, early and late January, late February, and early March.

April and May temperatures will be above normal, on average, with below-normal precipitation from Sudbury westward and above-normal precipitation elsewhere.

Summer will be cooler and drier than normal. The hottest periods will be in late May, mid- to late June, and mid-July.

September and October will be warmer and drier than normal, with especially warm temperatures in early September.

Detailed Forecast for the Next Two Months

May 2008

Avg. Temperature: 12.5°C (avg.)
Precipitation: 70mm (20mm above avg. east, 10mm below west)
May. 1-6: Showers, then sunny, cool
May. 7-10: Showers, then sunny
May. 11-20: Showers, then sunny, cool
May. 21-29: Rain, then sunny, warm
May. 30-31: T-storms, warm
 

June 2008

Avg. Temperature: 16.5° (1° below avg.)
Precipitation: 50mm (30mm below avg.)
Jun. 1-2: Sunny, warm
Jun. 3-14: Showers, cool
Jun. 15-25: Sunny, hot
Jun. 26-30: Showers, then sunny

Temperature and Precipitation
November 2007 to October 2008

Temperature and Precipitation Graph
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