FPCN11 CWTO 062244 AAD
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 6:43 P.M. EDT SATURDAY 6 JUNE
2026 FOR TONIGHT SUNDAY AND SUNDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT SUNDAY.

CITY OF TORONTO.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 LOW 14.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT IN
 THE AFTERNOON. HIGH 26. HUMIDEX 29. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.

CHATHAM-KENT - RONDEAU PARK.
TONIGHT..CLEAR. WIND WEST 20 KM/H BECOMING LIGHT THIS EVENING.
 LOW 14.
SUNDAY..SUNNY. HIGH 28. HUMIDEX 31. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING EAST 30 KM/H BEFORE MORNING.
 LOW 14.

SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TONIGHT..CLEAR. LOW 13.
SUNDAY..SUNNY. HIGH 20. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 12.

WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 13.
SUNDAY..SUNNY. HIGH 25. HUMIDEX 28. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TONIGHT..CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING LIGHT
 THIS EVENING. WIND BECOMING NORTHWEST 20 BEFORE MORNING. LOW 14.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE
 AFTERNOON. HIGH 28. HUMIDEX 32. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 15.

ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 14.
SUNDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING.
 HIGH 28. HUMIDEX 32. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 15.

STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 13.
SUNDAY..SUNNY. WIND BECOMING NORTH 20 KM/H IN THE AFTERNOON. HIGH 26.
 HUMIDEX 29. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING EAST 20 KM/H BEFORE MORNING.
 LOW 14.

LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. LOW 13.
SUNDAY..SUNNY. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING.
 HIGH 27. HUMIDEX 30. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING EAST 20 KM/H BEFORE MORNING.
 LOW 13.

SIMCOE - DELHI - NORFOLK.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. LOW 13.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
 MORNING. HIGH 28. HUMIDEX 31. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING EAST 20 KM/H BEFORE MORNING.
 LOW 12.

DUNNVILLE - CALEDONIA - HALDIMAND.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 15.
SUNDAY..SUNNY. HIGH 28. HUMIDEX 31. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.

WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 13.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
 MORNING. HIGH 27. HUMIDEX 30. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING EAST 20 KM/H BEFORE MORNING.
 LOW 12.

BRANTFORD - COUNTY OF BRANT.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 13.
SUNDAY..SUNNY. HIGH 28. HUMIDEX 31. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. CLEARING THIS EVENING. WIND WEST 20 KM/H BECOMING LIGHT
 THIS EVENING. LOW 15.
SUNDAY..SUNNY. WIND BECOMING NORTH 20 KM/H LATE IN THE MORNING.
 HIGH 25. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.

ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND WEST 40 KM/H GUSTING TO 70 BECOMING
 LIGHT THIS EVENING. LOW 14.
SUNDAY..SUNNY. HIGH 27. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

CITY OF HAMILTON.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. CLEARING THIS EVENING. WIND WEST 20 KM/H BECOMING LIGHT
 THIS EVENING. LOW 13.
SUNDAY..SUNNY. WIND BECOMING NORTH 20 KM/H LATE IN THE MORNING.
 HIGH 27. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

BURLINGTON - OAKVILLE.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT LATE THIS EVENING. LOW 15.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING EAST 20 LATE
 IN THE MORNING THEN LIGHT IN THE AFTERNOON. HIGH 26. HUMIDEX 30. UV
 INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.

HALTON HILLS - MILTON.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING NORTH 20 BEFORE
 MORNING. LOW 14.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 26. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

MISSISSAUGA - BRAMPTON.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING NORTH 20 BEFORE
 MORNING. LOW 14.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 26. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 14.

CALEDON.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT AFTER MIDNIGHT. WIND BECOMING NORTH 20 GUSTING TO 40
 BEFORE MORNING. LOW 12.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 25. HUMIDEX 29. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 13.

VAUGHAN - RICHMOND HILL - MARKHAM.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING NORTHWEST 20 BEFORE
 MORNING. LOW 14.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 26. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 13.

NEWMARKET - GEORGINA - NORTHERN YORK REGION.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. WIND BECOMING NORTHWEST 20 BEFORE
 MORNING. LOW 13.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40. HIGH 24. HUMIDEX 28.
 UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 13.

PICKERING - OSHAWA - SOUTHERN DURHAM REGION.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND WEST 40 KM/H BECOMING NORTH 20
 GUSTING TO 40 THIS EVENING. LOW 14.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 26. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 14.

UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. WIND NORTHWEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE
 THIS EVENING. WIND BECOMING NORTHWEST 20 GUSTING TO 40 BEFORE
 MORNING. LOW 13.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 25. HUMIDEX 30. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 13.

GODERICH - BLUEWATER - SOUTHERN HURON COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. LOW 11.
SUNDAY..SUNNY. WIND BECOMING NORTH 30 KM/H IN THE AFTERNOON. HIGH 22.
 HUMIDEX 25. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND NORTH 30 KM/H BECOMING LIGHT IN THE
 EVENING. WIND BECOMING SOUTHEAST 20 GUSTING TO 40 NEAR MIDNIGHT.
 LOW 14.

WINGHAM - BLYTH - NORTHERN HURON COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 10.
SUNDAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
 HIGH 24. HUMIDEX 27. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 14.

STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT LATE THIS EVENING. LOW 10.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE
 MORNING. HIGH 25. HUMIDEX 28. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40
 BEFORE MORNING. LOW 13.

LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT THIS EVENING. LOW 10.
SUNDAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
 HIGH 24. HUMIDEX 27. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 13.

KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND WEST 30 KM/H GUSTING TO 60 BECOMING
 LIGHT LATE THIS EVENING. LOW 12.
SUNDAY..SUNNY. WIND BECOMING NORTH 20 KM/H GUSTING TO 40 IN THE
 MORNING THEN LIGHT IN THE AFTERNOON. HIGH 25. HUMIDEX 28. UV INDEX 9
 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 12.

GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H GUSTING TO 50
 BECOMING LIGHT LATE THIS EVENING. LOW 12.
SUNDAY..SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE
 AFTERNOON. HIGH 25. HUMIDEX 28. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 12.

MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE THIS EVENING.
 LOW 11.
SUNDAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
 HIGH 24. HUMIDEX 27. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 12.

ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 20 KM/H GUSTING TO 40
 BECOMING LIGHT LATE THIS EVENING. WIND BECOMING NORTH 20 BEFORE
 MORNING. LOW 12.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 24. HUMIDEX 28. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.

SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND WEST 30 KM/H GUSTING TO 50 BECOMING
 LIGHT AFTER MIDNIGHT. WIND BECOMING NORTH 20 BEFORE MORNING. LOW 12.
SUNDAY..SUNNY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING LIGHT IN THE
 AFTERNOON. HIGH 22. HUMIDEX 26. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 11.

INNISFIL - NEW TECUMSETH - ANGUS.
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS
 EVENING. OTHERWISE CLEAR. WIND NORTHWEST 30 KM/H BECOMING LIGHT LATE
 THIS EVENING. LOW 12.
SUNDAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
 HIGH 23. HUMIDEX 27. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 11.

SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY.
TONIGHT..CLEAR. LOW 9.
SUNDAY..SUNNY. HIGH 19. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40
 BEFORE MORNING. LOW 11.

BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY.
TONIGHT..CLEARING EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING
 LIGHT THIS EVENING. LOW 9.
SUNDAY..SUNNY. WIND NORTHEAST 20 KM/H BECOMING LIGHT LATE IN THE
 MORNING. HIGH 19. UV INDEX 8 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.

HANOVER - DUNDALK - SOUTHERN GREY COUNTY.
TONIGHT..A FEW CLOUDS. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT
 THIS EVENING. LOW 10.
SUNDAY..SUNNY. WIND NORTH 20 KM/H BECOMING LIGHT IN THE AFTERNOON.
 HIGH 22. HUMIDEX 25. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. WIND BECOMING SOUTHEAST 20 KM/H BEFORE MORNING.
 LOW 13.

OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.
TONIGHT..CLEARING EARLY THIS EVENING. WIND WEST 20 KM/H BECOMING
 LIGHT THIS EVENING. LOW 10.
SUNDAY..SUNNY. WIND NORTHEAST 20 KM/H BECOMING LIGHT LATE IN THE
 MORNING. HIGH 21. HUMIDEX 26. UV INDEX 9 OR VERY HIGH.
SUNDAY NIGHT..CLEAR. LOW 11.

REMAINDER UNCHANGED.

END