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Long-Range Weather Forecast for Cornwall, ON
Annual Weather Summary
November 2022 to October 2023
Winter temperatures will be slightly above normal in the east and below normal in the west, with the coldest periods in early and late December and early and late January. Precipitation and snowfall will be above normal. The snowiest periods will be in late November, early to mid-December, early to mid-January, and mid-March. April and May will be warmer and drier than normal. Summer will be warmer and drier than normal, on average, with the hottest periods in mid-July and early August. September and October temperatures will be near normal, on average, with below-normal rainfall. Precipitation will be above normal, with snowfall above normal in the east and below normal in the west. The snowiest periods will be in mid-December, early January, and mid-February. April and May will be warmer and drier than normal. Summer will be slightly cooler as well as rainier than normal, with the hottest periods in mid-July and mid- to late August. September and October will be cooler and rainier than normal.
Free 2-Month Weather Forecast
| Dates | Weather Conditions |
|---|---|
| Jun 1-8 | Scattered showers, cool |
| Jun 9-15 | Sunny, then rainy periods; warm |
| Jun 16-21 | Sunny, then showers; mild |
| Jun 22-30 | Sunny, cool |
| June | temperature 19°C (avg.) precipitation 75mm (15mm below avg.) |
| Dates | Weather Conditions |
|---|---|
| Jul 1-6 | A few t-storms, then sunny; turning cool |
| Jul 7-10 | Showers, warm |
| Jul 11-17 | Sunny east, a few t-storms west; very warm |
| Jul 18-31 | Sunny, then scattered t-storms; cool |
| July | temperature 21°C (1°C above avg.) precipitation 85mm (10mm below avg.) |
Temperature and Precipitation November 2022 to October 2023
