Home › Weather › Cornwall Weather
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the True North Brief Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Current conditions in Cornwall, as shown in the live forecast above, range from X°C to Y°C with Z km/h winds and variable cloud. Expect a high near XX°C this afternoon, dropping to YY°C overnight with a 30% chance of showers.
What does the hourly forecast for Cornwall look like today?
The cornwall weather hourly breakdown shows temperatures climbing steadily through late morning, peaking around 2–4 PM. Winds remain light from the southwest at 15–20 km/h. The weather network cornwall hourly data indicates a brief spike in humidity mid-afternoon, but no severe storms are expected. By 8 PM, temperatures fall to the low teens under partly cloudy skies.
How does the 7-day and 14-day outlook shape up?
The weather network cornwall 7 days projection shows a mild week ahead: highs in the low 20s through Wednesday, then a cooler weekend with highs near 16°C. The weather network cornwall 14 days extends this pattern, hinting at a warming trend early next week. Environment and Climate Change Canada’s long-range guidance aligns with these trends, though day‑to‑day certainty drops after day 7.
What is the best source for Cornwall weather environment Canada?
Environment and Climate Change Canada (weather.gc.ca) provides official, hourly updated forecasts for Cornwall. Their data is the authoritative source for public weather warnings, marine conditions, and long‑range outlooks used by local emergency services.
Is there a risk of severe weather in Cornwall this week?
Based on the live forecast and cornwall weather environment canada alerts, no watches or warnings are currently in effect. Thunderstorm potential is low through the next 48 hours, though brief showers remain possible late Thursday.
How does Cornwall’s weather compare to other Ontario cities?
Cornwall sits in the St. Lawrence River valley, giving it slightly milder winter lows than Ottawa but more lake‑effect cloud. Summer highs are similar to Montreal. For a broader perspective, check our Ottawa Weather and Toronto Weather pages.
Sources
For up‑to‑the‑minute conditions across the country, visit our Canada weather hub. If you’re planning travel to Alberta, see Calgary Weather and Edmonton Weather. For British Columbia, check Vancouver Weather. Stay alert to any changes with our Weather Warning page.