Complete 2015 Long-Range Weather Forecast for the Southern Ontario Region, November 2014 to October 2015 includes week-by-week details.
Free 2-Month Weather Forecast
MAY 2015: temperature 11.5°C (1°C below avg.); precipitation 90mm (10mm below avg. east, 60mm above west); May 1-10: Rainy periods, cool; May 11-16: Scattered t-storms, turning warm; May 17-23: Showers, then sunny, cool; May 24-27: Scattered showers, warm; May 28-31: Sunny; cool east, very warm west.
JUNE 2015: temperature 17.5°C (1°C below avg. east, 1°C above west); precipitation 80mm (avg.); Jun 1-5: Sunny, warm east; showers west; Jun 6-9: Showers east, sunny west; Jun 10-16: Showers; warm, then cool; Jun 17-22: A few showers, cool; Jun 23-30: Sunny, warm.
Annual Weather Summary: November 2014 to October 2015
Winter temperatures and precipitation will be below normal, with the coldest periods in mid-December, early and mid-January, and early to mid-February. Snowfall will be below normal in Southwest Ontario and above normal elsewhere, with the snowiest periods in December and mid- to late March.
April and May temperatures will be near normal, with precipitation below normal east, above west.
Summer will be warmer than normal, with the hottest temperatures in mid- to late July and early August. Rainfall will be above normal in the east and below in the west.
September and October will be warmer than normal, with precipitation below normal in the east and above in the west.