134  
FPCN11 CWTO 291917  
FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED  
BY ENVIRONMENT CANADA AT 3.30 PM EDT WEDNESDAY 29 MARCH 2017 FOR  
TONIGHT THURSDAY AND THURSDAY NIGHT.  
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5.00 AM THURSDAY.  
 
CITY OF TORONTO.  
TONIGHT..MAINLY CLOUDY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. WIND BECOMING EAST 20 BEFORE MORNING. LOW ZERO.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING LATE IN THE  
AFTERNOON. WIND EAST 20 KM/H GUSTING TO 40. HIGH PLUS 3. UV INDEX 3  
OR MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW OR RAIN CHANGING TO RAIN IN THE  
EVENING. WIND EAST 20 KM/H GUSTING TO 40 INCREASING TO 40 GUSTING TO  
60 IN THE EVENING. LOW PLUS 1 WITH TEMPERATURE RISING TO PLUS 4 BY  
MORNING.  
 
WINDSOR - ESSEX - CHATHAM-KENT.  
TONIGHT..INCREASING CLOUDINESS EARLY THIS EVENING. 40 PERCENT CHANCE  
OF SHOWERS OVERNIGHT. WIND NORTHEAST 20 KM/H BECOMING LIGHT THIS  
EVENING. WIND BECOMING EAST 30 GUSTING TO 50 OVERNIGHT. LOW PLUS 3.  
THURSDAY..RAIN. RISK OF A THUNDERSTORM IN THE AFTERNOON. AMOUNT 5 TO  
10 MM. WIND EAST 40 KM/H GUSTING TO 60. HIGH 6.  
THURSDAY NIGHT..PERIODS OF RAIN. RISK OF A THUNDERSTORM EARLY IN THE  
EVENING. AMOUNT 10 TO 20 MM. WIND EAST 40 KM/H GUSTING TO 60  
DIMINISHING TO 20 GUSTING TO 40 LATE IN THE EVENING. TEMPERATURE  
STEADY NEAR 6.  
 
SARNIA - LAMBTON.  
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND  
NORTH 20 KM/H BECOMING LIGHT THIS EVENING. WIND BECOMING EAST 30  
GUSTING TO 50 OVERNIGHT. LOW PLUS 2.  
THURSDAY..RAIN. RISK OF A THUNDERSTORM IN THE AFTERNOON. AMOUNT 5 TO  
10 MM. WIND EAST 40 KM/H GUSTING TO 60. HIGH PLUS 5.  
THURSDAY NIGHT..PERIODS OF RAIN. RISK OF A THUNDERSTORM EARLY IN THE  
EVENING. AMOUNT 10 TO 20 MM. WIND EAST 40 KM/H GUSTING TO 60  
DIMINISHING TO 20 GUSTING TO 40 LATE IN THE EVENING. TEMPERATURE  
STEADY NEAR PLUS 5.  
 
ELGIN  
LONDON - MIDDLESEX.  
TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES  
OVERNIGHT. WIND BECOMING EAST 30 KM/H GUSTING TO 50 THIS EVENING.  
LOW PLUS 1.  
THURSDAY..RAIN. RISK OF THUNDERSTORMS LATE IN THE AFTERNOON. AMOUNT  
5 MM. WIND EAST 40 KM/H GUSTING TO 60. HIGH PLUS 4.  
THURSDAY NIGHT..RAIN. RISK OF THUNDERSTORMS EARLY IN THE EVENING.  
AMOUNT 10 TO 20 MM. WIND EAST 40 KM/H GUSTING TO 60 DIMINISHING TO  
20 GUSTING TO 40 OVERNIGHT. TEMPERATURE STEADY NEAR PLUS 4.  
 
SIMCOE - DELHI - NORFOLK  
DUNNVILLE - CALEDONIA - HALDIMAND  
OXFORD - BRANT.  
TONIGHT..MAINLY CLOUDY. WIND BECOMING NORTHEAST 30 KM/H GUSTING TO 50  
THIS EVENING. LOW PLUS 1.  
THURSDAY..CLOUDY. RAIN BEGINNING LATE IN THE MORNING. WIND EAST  
40 KM/H GUSTING TO 60. HIGH PLUS 4.  
THURSDAY NIGHT..RAIN. WIND EAST 40 KM/H GUSTING TO 60 DIMINISHING TO  
20 GUSTING TO 40 OVERNIGHT. TEMPERATURE STEADY NEAR PLUS 4.  
 
NIAGARA.  
TONIGHT..MAINLY CLOUDY. WIND BECOMING NORTHEAST 20 KM/H GUSTING TO 40  
NEAR MIDNIGHT. LOW PLUS 1.  
THURSDAY..CLOUDY. RAIN BEGINNING EARLY IN THE AFTERNOON. WIND EAST  
20 KM/H GUSTING TO 40. HIGH PLUS 4. UV INDEX 3 OR MODERATE.  
THURSDAY NIGHT..RAIN. WIND EAST 40 KM/H GUSTING TO 60 DIMINISHING TO  
20 GUSTING TO 40 OVERNIGHT. TEMPERATURE RISING TO 6 BY MORNING.  
 
CITY OF HAMILTON.  
TONIGHT..MAINLY CLOUDY. WIND EAST 20 KM/H GUSTING TO 40. LOW ZERO.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING IN THE AFTERNOON.  
WIND EAST 30 KM/H GUSTING TO 50. TEMPERATURE STEADY NEAR PLUS 2. UV  
INDEX 3 OR MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW OR RAIN CHANGING TO RAIN IN THE  
EVENING. WIND EAST 40 KM/H GUSTING TO 60 DIMINISHING TO 20 GUSTING  
TO 40 AFTER MIDNIGHT. TEMPERATURE RISING TO PLUS 5 BY MORNING.  
 
BURLINGTON - OAKVILLE  
HALTON HILLS - MILTON  
MISSISSAUGA - BRAMPTON  
VAUGHAN - RICHMOND HILL - MARKHAM  
PICKERING - OSHAWA - SOUTHERN DURHAM REGION.  
TONIGHT..MAINLY CLOUDY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. WIND BECOMING EAST 20 BEFORE MORNING. LOW ZERO.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING LATE IN THE  
AFTERNOON. WIND EAST 20 KM/H GUSTING TO 40. HIGH PLUS 3. UV INDEX 3  
OR MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW OR RAIN CHANGING TO RAIN NEAR  
MIDNIGHT. WIND EAST 20 KM/H GUSTING TO 40 INCREASING TO 40 GUSTING  
TO 60 IN THE EVENING. LOW PLUS 1 WITH TEMPERATURE RISING TO PLUS 3  
BY MORNING.  
 
CALEDON  
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY  
DUFFERIN - INNISFIL  
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.  
TONIGHT..MAINLY CLOUDY. WIND NORTHEAST 20 KM/H BECOMING LIGHT THIS  
EVENING. WIND BECOMING EAST 20 GUSTING TO 40 BEFORE MORNING. LOW  
MINUS 1.  
THURSDAY..CLOUDY. SNOW OR RAIN BEGINNING IN THE AFTERNOON. RISK OF  
FREEZING RAIN LATE IN THE AFTERNOON. LOCAL SNOWFALL AMOUNT 2 CM.  
WIND SOUTHEAST 30 KM/H GUSTING TO 50. HIGH PLUS 2. UV INDEX 3 OR  
MODERATE.  
THURSDAY NIGHT..SNOW OR RAIN CHANGING TO PERIODS OF FREEZING RAIN IN  
THE EVENING THEN TO RAIN OVERNIGHT. RISK OF FREEZING RAIN EARLY IN  
THE EVENING. WIND SOUTHEAST 30 KM/H GUSTING TO 50. LOW MINUS 1 WITH  
TEMPERATURE RISING TO PLUS 2 BY MORNING.  
 
NEWMARKET - GEORGINA - NORTHERN YORK REGION  
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION.  
TONIGHT..MAINLY CLOUDY. WIND NORTH 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. WIND BECOMING EAST 20 BEFORE MORNING. LOW  
MINUS 2.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING LATE IN THE  
AFTERNOON. WIND SOUTHEAST 20 KM/H GUSTING TO 40. HIGH PLUS 2. UV  
INDEX 3 OR MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW OR RAIN CHANGING TO RAIN BEFORE  
MORNING. RISK OF FREEZING RAIN IN THE EVENING AND OVERNIGHT. LOCAL  
SNOWFALL AMOUNT 2 TO 4 CM. WIND SOUTHEAST 20 KM/H GUSTING TO 40  
BECOMING EAST 40 GUSTING TO 60 LATE IN THE EVENING. LOW PLUS 1.  
 
GODERICH - BLUEWATER - SOUTHERN HURON COUNTY  
WINGHAM - BLYTH - NORTHERN HURON COUNTY  
STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY.  
TONIGHT..MAINLY CLOUDY. WIND NORTHEAST 20 KM/H GUSTING TO 40.  
LOW ZERO.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING IN THE MORNING  
THEN CHANGING TO RAIN IN THE AFTERNOON. LOCAL SNOWFALL AMOUNT 2 CM.  
RAINFALL AMOUNT 5 MM. WIND EAST 30 KM/H GUSTING TO 50. HIGH PLUS 3.  
THURSDAY NIGHT..RAIN. AMOUNT 10 TO 20 MM. WIND SOUTHEAST 40 KM/H  
GUSTING TO 60. LOW PLUS 2 WITH TEMPERATURE RISING TO PLUS 5 BY  
MORNING.  
 
LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY  
KITCHENER - CAMBRIDGE - REGION OF WATERLOO  
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.  
TONIGHT..MAINLY CLOUDY. WIND NORTHEAST 20 KM/H GUSTING TO 40. LOW  
MINUS 1.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING EARLY IN THE  
AFTERNOON THEN CHANGING TO RAIN OR FREEZING RAIN LATE IN THE  
AFTERNOON. LOCAL SNOWFALL AMOUNT 2 CM. WIND EAST 30 KM/H GUSTING TO  
50. HIGH PLUS 2. UV INDEX 3 OR MODERATE.  
THURSDAY NIGHT..RAIN. RAIN OR FREEZING RAIN IN THE EVENING. WIND EAST  
40 KM/H GUSTING TO 60. LOW PLUS 1 WITH TEMPERATURE RISING TO PLUS 4  
BY MORNING.  
 
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY.  
TONIGHT..MAINLY CLOUDY. WIND EAST 20 KM/H GUSTING TO 40. LOW ZERO.  
THURSDAY..CLOUDY. PERIODS OF SNOW OR RAIN BEGINNING IN THE AFTERNOON.  
LOCAL SNOWFALL AMOUNT 2 CM. WIND EAST 30 KM/H GUSTING TO 50. HIGH  
PLUS 4. UV INDEX 3 OR MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW OR RAIN CHANGING TO RAIN NEAR  
MIDNIGHT. WIND EAST 40 KM/H GUSTING TO 60. LOW PLUS 1 WITH  
TEMPERATURE RISING TO PLUS 4 BY MORNING.  
 
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY  
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.  
TONIGHT..INCREASING CLOUDINESS EARLY THIS EVENING. WIND NORTHEAST  
20 KM/H BECOMING LIGHT THIS EVENING. WIND BECOMING EAST 20 GUSTING  
TO 40 BEFORE MORNING. LOW MINUS 1.  
THURSDAY..CLOUDY. PERIODS OF SNOW BEGINNING LATE IN THE AFTERNOON.  
WIND EAST 20 KM/H GUSTING TO 40. HIGH PLUS 3. UV INDEX 3 OR  
MODERATE.  
THURSDAY NIGHT..PERIODS OF SNOW CHANGING TO RAIN MIXED WITH SNOW IN  
THE EVENING. RISK OF FREEZING RAIN LATE IN THE EVENING AND  
OVERNIGHT. SNOWFALL AMOUNT 2 TO 4 CM. WIND EAST 20 KM/H GUSTING TO  
40 INCREASING TO 40 GUSTING TO 60 IN THE EVENING. LOW PLUS 1.  
 
BARRIE - ORILLIA - MIDLAND.  
TONIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 3.  
THURSDAY..MAINLY CLOUDY. PERIODS OF RAIN OR SNOW BEGINNING LATE IN  
THE AFTERNOON. WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE  
MORNING. HIGH PLUS 5. UV INDEX 5 OR MODERATE.  
THURSDAY NIGHT..PERIODS OF RAIN OR SNOW. RISK OF FREEZING RAIN  
OVERNIGHT. WIND SOUTHEAST 20 KM/H GUSTING TO 40 BECOMING EAST 40  
GUSTING TO 60 LATE IN THE EVENING. LOW PLUS 1.  
 
BELLEVILLE - QUINTE - NORTHUMBERLAND.  
TONIGHT..PARTLY CLOUDY. WIND NORTHEAST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW MINUS 2.  
THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY LATE IN THE  
MORNING. WIND BECOMING EAST 20 KM/H IN THE MORNING. HIGH PLUS 5. UV  
INDEX 4 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING NEAR MIDNIGHT. AMOUNT 5 CM.  
WIND EAST 20 KM/H. LOW ZERO.  
 
KINGSTON - PRINCE EDWARD.  
TONIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 3.  
THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY LATE IN THE  
AFTERNOON. HIGH 6. UV INDEX 5 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING AFTER MIDNIGHT. AMOUNT 5 CM.  
WIND BECOMING EAST 20 KM/H AFTER MIDNIGHT. LOW ZERO.  
 
PETERBOROUGH - KAWARTHA LAKES.  
TONIGHT..PARTLY CLOUDY. WIND NORTHEAST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW MINUS 4.  
THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY IN THE AFTERNOON.  
WIND BECOMING SOUTHEAST 20 KM/H GUSTING TO 40 IN THE MORNING.  
HIGH 6. UV INDEX 5 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING LATE IN THE EVENING. RISK OF  
FREEZING RAIN OVERNIGHT. SNOWFALL AMOUNT 5 TO 10 CM. WIND SOUTHEAST  
20 KM/H GUSTING TO 40. LOW ZERO.  
 
STIRLING - TWEED - SOUTH FRONTENAC  
KALADAR - BANNOCKBURN - BON ECHO PARK.  
TONIGHT..A FEW CLOUDS. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 6.  
THURSDAY..A MIX OF SUN AND CLOUD. WIND BECOMING EAST 20 KM/H IN THE  
AFTERNOON. HIGH 6. UV INDEX 5 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING AFTER MIDNIGHT. AMOUNT 5 CM.  
WIND EAST 20 KM/H. LOW MINUS 1.  
 
BANCROFT - HASTINGS HIGHLANDS - DENBIGH  
HALIBURTON.  
TONIGHT..A FEW CLOUDS. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 6.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 7. UV INDEX 6 OR HIGH.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING AFTER MIDNIGHT. AMOUNT 5 CM.  
WIND BECOMING EAST 20 KM/H GUSTING TO 40 AFTER MIDNIGHT. LOW  
MINUS 1.  
 
BROCKVILLE - LEEDS AND GRENVILLE  
CITY OF OTTAWA  
GATINEAU  
PRESCOTT AND RUSSELL  
CORNWALL - MORRISBURG  
SMITHS FALLS - LANARK - SHARBOT LAKE.  
TONIGHT..A FEW CLOUDS. WIND NORTHWEST 20 KM/H GUSTING TO 40 BECOMING  
LIGHT THIS EVENING. LOW MINUS 7.  
THURSDAY..MAINLY SUNNY. INCREASING CLOUDINESS IN THE AFTERNOON.  
HIGH 7. UV INDEX 5 OR MODERATE.  
THURSDAY NIGHT..MAINLY CLOUDY. A FEW FLURRIES BEGINNING BEFORE  
MORNING. WIND BECOMING EAST 20 KM/H GUSTING TO 40 AFTER MIDNIGHT.  
LOW MINUS 1.  
 
PORT CARLING - PORT SEVERN  
BRACEBRIDGE - GRAVENHURST.  
TONIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 5.  
THURSDAY..MAINLY CLOUDY. WIND BECOMING EAST 20 KM/H GUSTING TO 40 IN  
THE AFTERNOON. HIGH 6. UV INDEX 4 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. SNOW BEGINNING NEAR MIDNIGHT. AMOUNT 5 TO  
10 CM. WIND EAST 20 KM/H GUSTING TO 40. LOW ZERO.  
 
TOWN OF PARRY SOUND - ROSSEAU - KILLBEAR PARK  
BAYFIELD INLET - DUNCHURCH.  
TONIGHT..PARTLY CLOUDY. WIND NORTH 20 KM/H BECOMING LIGHT THIS  
EVENING. LOW MINUS 5.  
THURSDAY..MAINLY CLOUDY. WIND BECOMING EAST 20 KM/H GUSTING TO 40 IN  
THE AFTERNOON. HIGH 6. UV INDEX 4 OR MODERATE.  
THURSDAY NIGHT..CLOUDY. PERIODS OF SNOW BEGINNING AFTER MIDNIGHT.  
AMOUNT 2 CM. WIND EAST 20 KM/H GUSTING TO 40. LOW ZERO.  
 
HUNTSVILLE - BAYSVILLE  
ALGONQUIN  
SOUTH RIVER - BURK'S FALLS.  
TONIGHT..CLEARING EARLY THIS EVENING. WIND NORTH 20 KM/H BECOMING  
LIGHT THIS EVENING. LOW MINUS 9.  
THURSDAY..A MIX OF SUN AND CLOUD. BECOMING CLOUDY IN THE AFTERNOON.  
WIND BECOMING EAST 20 KM/H GUSTING TO 40 IN THE AFTERNOON. HIGH  
PLUS 4. UV INDEX 6 OR HIGH.  
THURSDAY NIGHT..CLOUDY. PERIODS OF SNOW BEGINNING OVERNIGHT. AMOUNT  
2 CM. WIND EAST 20 KM/H GUSTING TO 40. LOW MINUS 1.  
 
RENFREW - PEMBROKE - BARRY'S BAY.  
TONIGHT..CLEARING EARLY THIS EVENING. WIND NORTHWEST 20 KM/H GUSTING  
TO 40 BECOMING LIGHT THIS EVENING. LOW MINUS 8.  
THURSDAY..A MIX OF SUN AND CLOUD. HIGH 7. UV INDEX 6 OR HIGH.  
THURSDAY NIGHT..PARTLY CLOUDY. BECOMING CLOUDY NEAR MIDNIGHT. A FEW  
FLURRIES BEGINNING BEFORE MORNING. WIND BECOMING SOUTHEAST 20 KM/H  
AFTER MIDNIGHT. LOW MINUS 1.  
 
END  
 
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