712  
FPCN11 CWTO 230846  
FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED  
BY ENVIRONMENT CANADA AT 5:00 A.M. EDT SUNDAY 23 JULY 2017 FOR TODAY  
AND MONDAY.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.  
 
CITY OF TORONTO  
BURLINGTON - OAKVILLE  
HALTON HILLS - MILTON  
MISSISSAUGA - BRAMPTON.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING AND LATE THIS AFTERNOON. WIND BECOMING EAST 20 KM/H  
NEAR NOON. HIGH 25. HUMIDEX 31. UV INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO  
30 PERCENT CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM  
THIS EVENING. WIND EAST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT.  
LOW 17.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 22.  
HUMIDEX 25.  
 
WINDSOR - ESSEX - CHATHAM-KENT.  
TODAY..A MIX OF SUN AND CLOUD. 70 PERCENT CHANCE OF SHOWERS THIS  
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 29. HUMIDEX 37. UV  
INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING AND RISK OF A THUNDERSTORM. CLEARING THIS EVENING. LOW 19.  
MONDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING.  
HIGH 24. HUMIDEX 28.  
 
SARNIA - LAMBTON.  
TODAY..A MIX OF SUN AND CLOUD. 70 PERCENT CHANCE OF SHOWERS THIS  
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 27. HUMIDEX 35. UV  
INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING AND RISK OF A THUNDERSTORM. CLEARING THIS EVENING. LOW 18.  
MONDAY..SUNNY. BECOMING A MIX OF SUN AND CLOUD IN THE MORNING. WIND  
BECOMING NORTH 20 KM/H NEAR NOON. HIGH 22. HUMIDEX 25.  
 
ELGIN  
LONDON - MIDDLESEX.  
TODAY..A MIX OF SUN AND CLOUD. 70 PERCENT CHANCE OF SHOWERS LATE THIS  
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 27. HUMIDEX 35. UV  
INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING AND RISK OF A THUNDERSTORM. CLEARING THIS EVENING. LOW 17.  
MONDAY..SUNNY EARLY IN THE MORNING THEN A MIX OF SUN AND CLOUD WITH  
30 PERCENT CHANCE OF SHOWERS IN THE AFTERNOON. HIGH 23. HUMIDEX 26.  
 
SIMCOE - DELHI - NORFOLK  
DUNNVILLE - CALEDONIA - HALDIMAND  
OXFORD - BRANT.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING. 70 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK  
OF A THUNDERSTORM LATE THIS AFTERNOON. HIGH 27. HUMIDEX 34. UV  
INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING WITH RISK OF A THUNDERSTORM. LOW 17.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. HIGH 23. HUMIDEX 26.  
 
NIAGARA  
CITY OF HAMILTON.  
TODAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING. 60 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK  
OF A THUNDERSTORM LATE THIS AFTERNOON. WIND BECOMING EAST 20 KM/H  
NEAR NOON. HIGH 26. HUMIDEX 33. UV INDEX 9 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING  
WITH RISK OF A THUNDERSTORM. WIND NORTHEAST 20 KM/H. LOW 17.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND NORTHEAST 20 KM/H. HIGH 21.  
 
CALEDON  
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY  
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY  
ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING. 70 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK  
OF A THUNDERSTORM LATE THIS AFTERNOON. HIGH 24. HUMIDEX 31. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO  
30 PERCENT CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM  
THIS EVENING. LOW 15.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 21.  
 
VAUGHAN - RICHMOND HILL - MARKHAM  
PICKERING - OSHAWA - SOUTHERN DURHAM REGION.  
TODAY..A MIX OF SUN AND CLOUD. 40 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING. 30 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. WIND  
BECOMING EAST 20 KM/H NEAR NOON. HIGH 24. HUMIDEX 29. UV INDEX 8 OR  
VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO  
30 PERCENT CHANCE OF SHOWERS OVERNIGHT. RISK OF A THUNDERSTORM THIS  
EVENING AND AFTER MIDNIGHT. WIND EAST 20 KM/H BECOMING LIGHT NEAR  
MIDNIGHT. LOW 16.  
MONDAY..A MIX OF SUN AND CLOUD WITH 40 PERCENT CHANCE OF SHOWERS.  
WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 21.  
 
NEWMARKET - GEORGINA - NORTHERN YORK REGION  
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION  
SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY  
INNISFIL - NEW TECUMSETH - ANGUS.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING AND LATE THIS AFTERNOON. HIGH 24. HUMIDEX 30. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..MAINLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM THIS EVENING. LOW 15.  
MONDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND  
BECOMING NORTHEAST 20 KM/H IN THE AFTERNOON. HIGH 20.  
 
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY  
WINGHAM - BLYTH - NORTHERN HURON COUNTY.  
TODAY..A MIX OF SUN AND CLOUD. 70 PERCENT CHANCE OF SHOWERS LATE THIS  
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 26. HUMIDEX 34. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS THIS EVENING  
WITH RISK OF A THUNDERSTORM. LOW 16.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 22.  
HUMIDEX 25.  
 
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY  
LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY  
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.  
TODAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS EARLY  
THIS MORNING. 70 PERCENT CHANCE OF SHOWERS LATE THIS AFTERNOON. RISK  
OF A THUNDERSTORM LATE THIS AFTERNOON. HIGH 25. HUMIDEX 32. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS THIS EVENING  
WITH RISK OF A THUNDERSTORM. LOW 16.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 21.  
 
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY  
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.  
TODAY..A MIX OF SUN AND CLOUD. 70 PERCENT CHANCE OF SHOWERS LATE THIS  
AFTERNOON WITH RISK OF A THUNDERSTORM. HIGH 24. HUMIDEX 31. UV  
INDEX 8 OR VERY HIGH.  
TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO  
30 PERCENT CHANCE OF SHOWERS NEAR MIDNIGHT. RISK OF A THUNDERSTORM  
THIS EVENING. LOW 15.  
MONDAY..A MIX OF SUN AND CLOUD. 30 PERCENT CHANCE OF SHOWERS IN THE  
AFTERNOON. WIND BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 21.  
 
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY  
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.  
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS EARLY THIS  
MORNING AND 70 PERCENT CHANCE OF SHOWERS THIS AFTERNOON. RISK OF A  
THUNDERSTORM THIS AFTERNOON. WIND BECOMING EAST 20 KM/H GUSTING TO  
40 THIS MORNING. HIGH 23. HUMIDEX 30. UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. WIND EAST  
20 KM/H. LOW 15.  
MONDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND  
NORTHEAST 20 KM/H. HIGH 21.  
 
BARRIE - ORILLIA - MIDLAND.  
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS MORNING  
AND LATE THIS AFTERNOON. WIND BECOMING EAST 20 KM/H NEAR NOON.  
HIGH 24. HUMIDEX 30. UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND EAST  
20 KM/H BECOMING LIGHT THIS EVENING. LOW 14.  
MONDAY..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. WIND  
BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 20.  
 
BELLEVILLE - QUINTE - NORTHUMBERLAND  
KINGSTON - PRINCE EDWARD.  
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS MORNING. WIND  
BECOMING NORTHEAST 20 KM/H NEAR NOON. HIGH 24. HUMIDEX 29. UV  
INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE THIS  
EVENING AND OVERNIGHT WITH RISK OF A THUNDERSTORM. WIND NORTHEAST  
20 KM/H BECOMING LIGHT OVERNIGHT. LOW 15.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY IN THE MORNING. WIND BECOMING NORTHEAST 20 KM/H  
IN THE MORNING. HIGH 19.  
 
PETERBOROUGH - KAWARTHA LAKES.  
TODAY..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS  
MORNING. FOG PATCHES DISSIPATING THIS MORNING. HIGH 24. HUMIDEX 27.  
UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE THIS  
EVENING AND OVERNIGHT. LOW 14.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND  
BECOMING NORTHEAST 20 KM/H IN THE AFTERNOON. HIGH 19.  
 
STIRLING - TWEED - SOUTH FRONTENAC  
BANCROFT - BON ECHO PARK  
PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY.  
TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS MORNING AND  
EARLY THIS AFTERNOON. HIGH 23. HUMIDEX 25. UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE THIS  
EVENING AND OVERNIGHT. LOW 13.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND  
BECOMING NORTHEAST 20 KM/H IN THE AFTERNOON. HIGH 18.  
 
BROCKVILLE - LEEDS AND GRENVILLE  
CITY OF OTTAWA  
GATINEAU  
PRESCOTT AND RUSSELL  
CORNWALL - MORRISBURG  
SMITHS FALLS - PERTH - EASTERN LANARK COUNTY.  
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 23.  
HUMIDEX 25. UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 14.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. WIND  
BECOMING NORTHEAST 20 KM/H IN THE AFTERNOON. HIGH 18.  
 
PARRY SOUND - MUSKOKA  
HALIBURTON.  
TODAY..MAINLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. HIGH 23.  
HUMIDEX 26. UV INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS LATE THIS  
EVENING AND OVERNIGHT. LOW 13.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 18.  
 
RENFREW - PEMBROKE - BARRY'S BAY.  
TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS. HIGH 21. UV  
INDEX 7 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 13.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 18.  
 
ALGONQUIN  
BURK'S FALLS - BAYFIELD INLET.  
TODAY..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS MORNING.  
HIGH 22. HUMIDEX 25. UV INDEX 6 OR HIGH.  
TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS OVERNIGHT.  
LOW 13.  
MONDAY..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. HIGH 19.  
 
END  
 
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