210  
FPCN11 CWTO 191918  
FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED  
BY ENVIRONMENT CANADA AT 3:30 P.M. EDT TUESDAY 19 SEPTEMBER 2017 FOR  
TONIGHT WEDNESDAY AND WEDNESDAY NIGHT.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT  
WEDNESDAY.  
 
CITY OF TORONTO.  
TONIGHT..PARTLY CLOUDY. LOW 19.  
WEDNESDAY..MAINLY SUNNY. HIGH 27. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 17.  
 
WINDSOR - ESSEX - CHATHAM-KENT.  
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN MAINLY CLOUDY WITH  
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS  
EVENING. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. HIGH 27. HUMIDEX 32. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN  
THE EVENING WITH RISK OF A THUNDERSTORM. LOW 16.  
 
SARNIA - LAMBTON.  
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN MAINLY CLOUDY WITH  
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS  
EVENING. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. HIGH 27. HUMIDEX 32. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS  
EARLY IN THE EVENING AND RISK OF A THUNDERSTORM. CLEARING IN THE  
EVENING. LOW 16.  
 
ELGIN  
LONDON - MIDDLESEX.  
TONIGHT..MAINLY CLOUDY. 70 PERCENT CHANCE OF SHOWERS CHANGING TO  
30 PERCENT CHANCE OF SHOWERS THIS EVENING. RISK OF A THUNDERSTORM  
EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. HIGH 27. HUMIDEX 32. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS  
EARLY IN THE EVENING AND RISK OF A THUNDERSTORM. CLEARING IN THE  
EVENING. LOW 16.  
 
SIMCOE - DELHI - NORFOLK  
DUNNVILLE - CALEDONIA - HALDIMAND  
NIAGARA.  
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING WITH RISK OF A THUNDERSTORM. LOW 17.  
WEDNESDAY..A MIX OF SUN AND CLOUD. WIND BECOMING NORTHEAST 20 KM/H  
NEAR NOON. HIGH 27. HUMIDEX 35. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. WIND NORTHEAST 20 KM/H BECOMING LIGHT IN THE  
EVENING. LOW 15.  
 
OXFORD - BRANT  
KITCHENER - CAMBRIDGE - REGION OF WATERLOO.  
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 15.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. WIND BECOMING SOUTHEAST 20 KM/H NEAR NOON. HIGH 26. HUMIDEX  
33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEARING IN THE EVENING. WIND SOUTHEAST 20 KM/H  
BECOMING LIGHT IN THE EVENING. LOW 13.  
 
CITY OF HAMILTON.  
TONIGHT..PARTLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 17.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 25. HUMIDEX 32. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 15.  
 
BURLINGTON - OAKVILLE.  
TONIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 25. HUMIDEX 32. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 15.  
 
HALTON HILLS - MILTON  
MISSISSAUGA - BRAMPTON  
VAUGHAN - RICHMOND HILL - MARKHAM.  
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY THIS  
EVENING WITH RISK OF A THUNDERSTORM. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 17.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 27. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 15.  
 
CALEDON  
NEWMARKET - GEORGINA - NORTHERN YORK REGION  
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION  
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY  
DUFFERIN - INNISFIL.  
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.  
RISK OF A THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 15.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. HIGH 26. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY. BECOMING CLEAR IN THE EVENING.  
LOW 14.  
 
PICKERING - OSHAWA - SOUTHERN DURHAM REGION.  
TONIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 27. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 15.  
 
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY  
WINGHAM - BLYTH - NORTHERN HURON COUNTY.  
TONIGHT..A FEW SHOWERS ENDING THIS EVENING THEN MAINLY CLOUDY WITH  
30 PERCENT CHANCE OF SHOWERS. RISK OF A THUNDERSTORM EARLY THIS  
EVENING. FOG PATCHES DEVELOPING OVERNIGHT. LOW 15.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. WIND BECOMING SOUTHEAST 20 KM/H NEAR NOON. HIGH 26.  
HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS  
EARLY IN THE EVENING AND RISK OF A THUNDERSTORM. CLEARING IN THE  
EVENING. WIND SOUTHEAST 20 KM/H BECOMING LIGHT IN THE EVENING.  
LOW 14.  
 
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY  
LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY  
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.  
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 15.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. WIND BECOMING SOUTHEAST 20 KM/H NEAR NOON. HIGH 26.  
HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS  
EARLY IN THE EVENING AND RISK OF A THUNDERSTORM. CLEARING IN THE  
EVENING. WIND SOUTHEAST 20 KM/H BECOMING LIGHT IN THE EVENING.  
LOW 14.  
 
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY  
HANOVER - DUNDALK - SOUTHERN GREY COUNTY  
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.  
TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 14.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. HIGH 25. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN  
THE EVENING WITH RISK OF A THUNDERSTORM. LOW 16.  
 
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY.  
TONIGHT..PARTLY CLOUDY WITH 30 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 14.  
WEDNESDAY..A MIX OF SUN AND CLOUD WITH 30 PERCENT CHANCE OF SHOWERS.  
RISK OF A THUNDERSTORM IN THE AFTERNOON. FOG PATCHES DISSIPATING IN  
THE MORNING. HIGH 25. HUMIDEX 33. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS EARLY IN  
THE EVENING WITH RISK OF A THUNDERSTORM. LOW 16.  
 
BARRIE - ORILLIA - MIDLAND.  
TONIGHT..PARTLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING.  
RISK OF A THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 15.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 26. HUMIDEX 34. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEAR. LOW 15.  
 
BELLEVILLE - QUINTE - NORTHUMBERLAND  
KINGSTON - PRINCE EDWARD.  
TONIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING OVERNIGHT. LOW 17.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. HIGH 27. HUMIDEX 35. UV INDEX 6 OR HIGH.  
WEDNESDAY NIGHT..CLEARING IN THE EVENING. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 16.  
 
PETERBOROUGH - KAWARTHA LAKES  
STIRLING - TWEED - SOUTH FRONTENAC  
KALADAR - BANNOCKBURN - BON ECHO PARK.  
TONIGHT..PARTLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING.  
RISK OF A THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING  
AFTER MIDNIGHT. LOW 15.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. HIGH 26. HUMIDEX 32. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEARING IN THE EVENING. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 14.  
 
BANCROFT - HASTINGS HIGHLANDS - DENBIGH  
OXTONGUE LAKE - FORT IRWIN - NORTHERN HALIBURTON COUNTY  
RENFREW - PEMBROKE - BARRY'S BAY  
ALGONQUIN.  
TONIGHT..MAINLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS THIS  
EVENING. CLEARING OVERNIGHT. RISK OF A THUNDERSTORM EARLY THIS  
EVENING. FOG PATCHES DEVELOPING OVERNIGHT. LOW 13.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. HIGH 25. HUMIDEX 30. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEARING IN THE EVENING. LOW 13.  
 
BROCKVILLE - LEEDS AND GRENVILLE  
CITY OF OTTAWA  
GATINEAU  
PRESCOTT AND RUSSELL  
CORNWALL - MORRISBURG  
SMITHS FALLS - LANARK - SHARBOT LAKE.  
TONIGHT..PARTLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING.  
RISK OF A THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING  
OVERNIGHT. LOW 16.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 25. HUMIDEX 31. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
 
PORT CARLING - PORT SEVERN  
HUNTSVILLE - BAYSVILLE.  
TONIGHT..PARTLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 15.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 25. HUMIDEX 32. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
 
BRACEBRIDGE - GRAVENHURST.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 15.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 25. HUMIDEX 32. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEAR. LOW 14.  
 
TOWN OF PARRY SOUND - ROSSEAU - KILLBEAR PARK  
BURK'S FALLS - BAYFIELD INLET.  
TONIGHT..PARTLY CLOUDY. FOG PATCHES DEVELOPING OVERNIGHT. LOW 15.  
WEDNESDAY..MAINLY SUNNY. FOG PATCHES DISSIPATING IN THE MORNING.  
HIGH 24. HUMIDEX 31. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..A FEW CLOUDS. LOW 16.  
 
HALIBURTON - MINDEN - SOUTHERN HALIBURTON COUNTY.  
TONIGHT..PARTLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS. RISK OF A  
THUNDERSTORM EARLY THIS EVENING. FOG PATCHES DEVELOPING OVERNIGHT.  
LOW 13.  
WEDNESDAY..A MIX OF SUN AND CLOUD. FOG PATCHES DISSIPATING IN THE  
MORNING. HIGH 25. HUMIDEX 30. UV INDEX 5 OR MODERATE.  
WEDNESDAY NIGHT..CLEARING IN THE EVENING. LOW 13.  
 
END  
 
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