356  
FPCN11 CWTO 200846  
FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED  
BY ENVIRONMENT CANADA AT 5:00 A.M. EDT SUNDAY 20 MAY 2018 FOR TODAY  
AND MONDAY.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.  
 
CITY OF TORONTO  
BURLINGTON - OAKVILLE  
MISSISSAUGA - BRAMPTON  
PICKERING - OSHAWA - SOUTHERN DURHAM REGION.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 20. UV INDEX 7  
OR HIGH.  
TONIGHT..CLEARING THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 21  
EXCEPT 15 NEAR LAKE ONTARIO.  
 
WINDSOR - LEAMINGTON - ESSEX COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 22. UV INDEX 7  
OR HIGH.  
TONIGHT..A FEW CLOUDS. LOW 8.  
MONDAY..INCREASING CLOUDINESS. 40 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. HIGH 20.  
 
CHATHAM-KENT - RONDEAU PARK.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND  
NORTH 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 20. UV INDEX 7 OR  
HIGH.  
TONIGHT..A FEW CLOUDS. LOW 8.  
MONDAY..INCREASING CLOUDINESS. 40 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. HIGH 20.  
 
SARNIA - LAMBTON.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND  
NORTH 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 14. UV INDEX 7 OR  
HIGH.  
TONIGHT..PARTLY CLOUDY. LOW 6.  
MONDAY..MAINLY SUNNY. INCREASING CLOUDINESS NEAR NOON. HIGH 19.  
 
ELGIN  
SIMCOE - DELHI - NORFOLK.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 20. UV INDEX 7  
OR HIGH.  
TONIGHT..PARTLY CLOUDY. LOW 9.  
MONDAY..MAINLY SUNNY. INCREASING CLOUDINESS NEAR NOON. HIGH 21.  
 
LONDON - MIDDLESEX  
OXFORD - BRANT.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS AFTERNOON. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 20. UV INDEX 7  
OR HIGH.  
TONIGHT..PARTLY CLOUDY. LOW 7.  
MONDAY..A MIX OF SUN AND CLOUD. HIGH 21.  
 
DUNNVILLE - CALEDONIA - HALDIMAND  
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA REGION.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. HIGH 20. UV  
INDEX 7 OR HIGH.  
TONIGHT..PARTLY CLOUDY. LOW 8.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 20.  
 
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA REGION  
CITY OF HAMILTON.  
TODAY..CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING.  
BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND NORTHWEST 20 KM/H  
BECOMING LIGHT THIS MORNING. HIGH 20. UV INDEX 8 OR VERY HIGH.  
TONIGHT..CLEARING THIS EVENING. LOW 8.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 19  
EXCEPT 15 NEAR LAKE ONTARIO.  
 
HALTON HILLS - MILTON  
CALEDON  
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 19. UV INDEX 7  
OR HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 21.  
 
VAUGHAN - RICHMOND HILL - MARKHAM  
NEWMARKET - GEORGINA - NORTHERN YORK REGION  
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 19. UV INDEX 7  
OR HIGH.  
TONIGHT..CLEARING THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 21.  
 
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY  
WINGHAM - BLYTH - NORTHERN HURON COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD NEAR NOON. FOG PATCHES  
DISSIPATING THIS MORNING. WIND NORTHWEST 20 KM/H BECOMING LIGHT THIS  
MORNING. HIGH 16. UV INDEX 8 OR VERY HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS NEAR NOON. HIGH 19.  
 
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY  
LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY  
KITCHENER - CAMBRIDGE - REGION OF WATERLOO  
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 19. UV INDEX 7  
OR HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS EARLY IN THE AFTERNOON. HIGH 21.  
 
DUFFERIN - INNISFIL.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 18. UV INDEX 8  
OR VERY HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 2 WITH RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 21.  
 
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY  
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. FOG  
PATCHES DISSIPATING THIS MORNING. HIGH 13. UV INDEX 7 OR HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 3 WITH RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 20.  
 
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY  
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.  
TODAY..MAINLY CLOUDY. FOG PATCHES DISSIPATING THIS MORNING. HIGH 13.  
UV INDEX 6 OR HIGH.  
TONIGHT..CLEARING EARLY THIS EVENING. LOW PLUS 3 WITH RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 19.  
 
BARRIE - ORILLIA - MIDLAND.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT LATE THIS MORNING. HIGH 17. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. CLEARING LATE THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 21.  
 
BELLEVILLE - QUINTE - NORTHUMBERLAND.  
TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS  
MORNING. HIGH 19. UV INDEX 7 OR HIGH.  
TONIGHT..CLEARING THIS EVENING. LOW 6.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 21  
EXCEPT 15 NEAR LAKE ONTARIO.  
 
KINGSTON - PRINCE EDWARD.  
TODAY..A FEW SHOWERS ENDING EARLY THIS MORNING THEN A MIX OF SUN AND  
CLOUD. WIND WEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 17. UV  
INDEX 7 OR HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW 6.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 19  
EXCEPT 15 NEAR LAKE ONTARIO.  
 
LINDSAY - SOUTHERN KAWARTHA LAKES  
PETERBOROUGH CITY - LAKEFIELD - SOUTHERN PETERBOROUGH COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. WIND  
NORTHWEST 20 KM/H BECOMING LIGHT THIS MORNING. HIGH 19. UV INDEX 8  
OR VERY HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 22.  
 
FENELON FALLS - BALSAM LAKE PARK - NORTHERN KAWARTHA LAKES  
APSLEY - WOODVIEW - NORTHERN PETERBOROUGH COUNTY  
HALIBURTON - MINDEN - SOUTHERN HALIBURTON COUNTY.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. FOG  
PATCHES DISSIPATING THIS MORNING. HIGH 18. UV INDEX 7 OR HIGH.  
TONIGHT..CLEARING LATE THIS EVENING. LOW PLUS 3 WITH RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 22.  
 
STIRLING - TWEED - SOUTH FRONTENAC  
KALADAR - BANNOCKBURN - BON ECHO PARK  
PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY.  
TODAY..CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING  
THEN A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING THIS MORNING.  
HIGH 18. UV INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 23.  
 
BANCROFT - HASTINGS HIGHLANDS - DENBIGH  
RENFREW - PEMBROKE - BARRY'S BAY.  
TODAY..CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING.  
CLEARING THIS MORNING. FOG PATCHES DISSIPATING THIS MORNING.  
HIGH 19. UV INDEX 7 OR HIGH.  
TONIGHT..CLEAR. LOW PLUS 3 WITH RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 23.  
 
BROCKVILLE - LEEDS AND GRENVILLE  
CITY OF OTTAWA  
GATINEAU  
PRESCOTT AND RUSSELL  
CORNWALL - MORRISBURG  
SMITHS FALLS - PERTH - EASTERN LANARK COUNTY.  
TODAY..A FEW SHOWERS ENDING THIS MORNING THEN A MIX OF SUN AND CLOUD.  
WIND NORTHWEST 20 KM/H BECOMING LIGHT THIS AFTERNOON. HIGH 19. UV  
INDEX 7 OR HIGH.  
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR THIS EVENING. LOW PLUS 5.  
MONDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD LATE IN THE AFTERNOON.  
WIND BECOMING WEST 20 KM/H LATE IN THE MORNING. HIGH 24.  
 
PARRY SOUND - MUSKOKA  
BURK'S FALLS - BAYFIELD INLET.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. FOG  
PATCHES DISSIPATING EARLY THIS MORNING. HIGH 17. UV INDEX 8 OR VERY  
HIGH.  
TONIGHT..CLEARING THIS EVENING. LOW PLUS 4.  
MONDAY..SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON. HIGH 22.  
 
OXTONGUE LAKE - FORT IRWIN - NORTHERN HALIBURTON COUNTY  
ALGONQUIN.  
TODAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD THIS MORNING. FOG  
PATCHES DISSIPATING THIS MORNING. HIGH 19. UV INDEX 7 OR HIGH.  
TONIGHT..PARTLY CLOUDY. BECOMING CLEAR THIS EVENING. LOW PLUS 3 WITH  
RISK OF FROST.  
MONDAY..SUNNY. INCREASING CLOUDINESS LATE IN THE AFTERNOON. HIGH 22.  
 
END  
 
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