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Current conditions
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forecast

detailed forecast

Extented weather forecast for Cornwall Ontario and the Seaway
Issued by Environment Canada at 1500 utc Jun 04 2026
Today: A mix of sun and cloud. Wind becoming southwest 20 km/h late this afternoon. High 29. Humidex 30. Uv index 9 or very high.
Tonight: Partly cloudy. Wind southwest 20 km/h becoming light this evening. Low 15.
Friday: A mix of sun and cloud. High 29. Humidex 31. Uv index 9 or very high.
Friday Night: Cloudy with 60 percent chance of showers. Low 17.
Saturday: Showers. High 22.
Saturday Night: Cloudy with 60 percent chance of showers. Low 16.
Sunday: A mix of sun and cloud with 30 percent chance of showers. High 25.
Sunday Night: Cloudy periods with 30 percent chance of showers. Low 13.
Monday: Sunny. High 26.
Monday Night: Clear. Low 16.
Tuesday: Sunny. High 30.
Tuesday Night: Cloudy periods. Low 18.
Wednesday: A mix of sun and cloud with 30 percent chance of showers. High 30.

regional radar

news headlines

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1 year after acquittal in Hockey Canada sexual assault trial, Carter Hart could win Stanley Cup

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Hollywood's latest fixation? The young YouTubers behind box-office hits like Backrooms and Obsession

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Missing Everest guide found alive crawling to base camp after family had started funeral arrangements

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Will the Alberta-Canada carbon pricing deal work? A new analysis is skeptical

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N.S. removes short story containing N-word from online high school course

Nova Scotia’s Education Department has removed a short story from an online Grade 12 English course after a parent raised concerns and CBC News inquired . . . more

sports headlines

Hilary Knight, Daryl Watts among high-profile PWHL players available in expansion

PWHL teams could each protect three players from signing with expansion teams. New teams in Hamilton, Detroit, Las Vegas and San Jose will debut next . . . more

Jalen Brunson's late-game heroics help Knicks top Spurs in Game 1 of NBA Finals

Jalen Brunson won the NBA's clutch player award in 2025, and in case anyone forgot why, he provided a series of reminders in a scintillating . . . more

1 year after acquittal in Hockey Canada sexual assault trial, Carter Hart could win Stanley Cup

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Hammer thrower Camryn Rogers, runner Gabriela DeBues-Stafford earn repeat wins at Paavo Nurmi Games

Hammer thrower Camryn Rogers and middle-distance runner Gabriela DeBues-Stafford found themselves in familiar territory Wednesday in Finland, repeating as champions for Canada at the 69th . . . more

This Wemby vs. Knicks Finals is exactly what the NBA needs

CBC Sports' daily newsletter previews an exciting NBA Finals matchup between Victor Wembanyama's San Antonio Spurs and the championship-hungry New York Knicks. . . . more

'I'm destroyed today': Canada’s Felix Auger-Aliassime upset by Cobolli in French Open quarterfinal

Felix Auger-Aliassime’s run at the French Open ended on Wednesday in Paris after dropping a 6-4, 4-6, 4-6, 4-6 quarterfinal match to Italian Flavio Cobolli. . . . more

Women's soccer community hopes to reap benefits of men's World Cup legacy in Canada

Legacy is a word that has been thrown around ahead of the FIFA men’s World Cup. Soccer is the most played youth sport in Canada . . . more

'Anything is possible': Alphonso Davies refuses to rule himself out of Canada's World Cup opener

Canada captain Alphonso Davies trained on his own Wednesday as the men's national team continued preparations for the FIFA World Cup. . . . more

U Sports to introduce women's flag football as a pilot sport

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Hertl lifts Golden Knights past Hurricanes in Game 1 of Stanley Cup final

Tomas Hertl took a backhand pass from Colton Sisson and beat Frederik Anderson from the slot with 3:24 left in the third period, lifting the . . . more

this day in history

On June 4th

Cornwall Air Quality Health Index
12345 678910+
AQHI: 2.41   |   Risk: Low
Jun 4, 2026 16:00 UTC

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