Long-Range Weather Forecast for Chilliwack, BC

June 2026 Long Range Weather Forecast for Southern British Columbia

Dates	Weather Conditions
Jun 1-15	Rainy periods, cool
Jun 16-20	Sunny, cool
Jun 21-28	A few showers, then sunny; turning warm
Jun 29-30	Showers, cool
June	temperature 15°C (1°C below avg.) precipitation 105mm (30mm above avg.)

July 2026 Long Range Weather Forecast for Southern British Columbia

Dates	Weather Conditions
Jul 1-10	Isolated showers, cool
Jul 11-13	Isolated t-storms, warm north; showers, cool south
Jul 14-20	Sunny, warm
Jul 21-31	A few t-storms, turning cool
July	temperature 17.5°C (avg.) precipitation 55mm (5mm above avg.)

12-Month Long-Range Weather Outlook

November 2025 to October 2026

Winter will be warmer than normal, with the coldest periods in late November, early December, and early February. Precipitation will be below normal in the north and above south, while snowfall will be below normal. The snowiest periods will be in late November and early and mid-December. April and May will be cooler than normal, with above-normal precipitation. Summer will be warmer than usual with above-normal rainfall. The warmest period will be in early August. September and October will be warmer and drier than normal in the north, while the south will be cooler and wetter.

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

Weather Trend Graph

November 2025 to October 2026