902
FPCN11 CWTO 312102
FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED
BY ENVIRONMENT CANADA AT 3:30 P.M. EDT TUESDAY 31 MARCH 2026 FOR
TONIGHT WEDNESDAY AND WEDNESDAY NIGHT.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5:00 A.M. EDT
WEDNESDAY.
CITY OF TORONTO
VAUGHAN - RICHMOND HILL - MARKHAM
PICKERING - OSHAWA - SOUTHERN DURHAM REGION.
TONIGHT..CLOUDY. SHOWERS BEGINNING THIS EVENING AND ENDING LATE THIS
EVENING THEN 40 PERCENT CHANCE OF SHOWERS LATE THIS EVENING AND
AFTER MIDNIGHT. RISK OF A THUNDERSTORM THIS EVENING. LOCAL AMOUNT 10
TO 15 MM. WIND SOUTHWEST 30 KM/H BECOMING LIGHT LATE THIS EVENING.
WIND BECOMING NORTHWEST 30 BEFORE MORNING. LOW PLUS 3.
WEDNESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. WIND NORTH
20 KM/H. HIGH 8. UV INDEX 5 OR MODERATE.
WEDNESDAY NIGHT..A FEW CLOUDS. WIND UP TO 15 KM/H. LOW MINUS 2. WIND
CHILL MINUS 7 OVERNIGHT.
WINDSOR - ESSEX - CHATHAM-KENT.
TONIGHT..SHOWERS ENDING NEAR MIDNIGHT THEN CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS EVENING. LOCAL AMOUNT
20 MM. WIND SOUTHWEST 40 KM/H GUSTING TO 60 BECOMING NORTH 30 LATE
THIS EVENING. LOW PLUS 1.
WEDNESDAY..CLOUDY. BECOMING A MIX OF SUN AND CLOUD IN THE AFTERNOON
WITH 40 PERCENT CHANCE OF SHOWERS LATER IN THE AFTERNOON. WIND NORTH
30 KM/H. HIGH 6. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..PARTLY CLOUDY WITH 40 PERCENT CHANCE OF SHOWERS.
WIND NORTH 20 KM/H BECOMING EAST 20 NEAR MIDNIGHT. LOW MINUS 1.
SARNIA - LAMBTON.
TONIGHT..SHOWERS ENDING NEAR MIDNIGHT THEN CLOUDY WITH 40 PERCENT
CHANCE OF SHOWERS. RISK OF A THUNDERSTORM THIS EVENING. LOCAL AMOUNT
30 MM. WIND SOUTHWEST 40 KM/H GUSTING TO 60 BECOMING NORTH 30 LATE
THIS EVENING. LOW PLUS 1.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND NORTH 30 KM/H.
HIGH 6. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT THEN
40 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND NORTH 20 KM/H BECOMING
EAST 20 NEAR MIDNIGHT. LOW MINUS 1.
ELGIN
LONDON - MIDDLESEX
SIMCOE - DELHI - NORFOLK
WOODSTOCK - TILLSONBURG - OXFORD COUNTY.
TONIGHT..SHOWERS ENDING NEAR MIDNIGHT THEN CLOUDY. RISK OF A
THUNDERSTORM THIS EVENING. LOCAL AMOUNT 10 TO 20 MM. WIND SOUTHWEST
40 KM/H GUSTING TO 60 BECOMING WEST 20 THIS EVENING THEN LIGHT AFTER
MIDNIGHT. LOW 7.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND NORTH 20 KM/H.
HIGH 9. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT THEN
40 PERCENT CHANCE OF SHOWERS OVERNIGHT. WIND BECOMING EAST 40 KM/H
GUSTING TO 60 NEAR MIDNIGHT. LOW MINUS 1.
DUNNVILLE - CALEDONIA - HALDIMAND
BRANTFORD - COUNTY OF BRANT
NIAGARA
CITY OF HAMILTON.
TONIGHT..SHOWERS ENDING OVERNIGHT THEN CLOUDY. RISK OF A THUNDERSTORM
THIS EVENING. LOCAL AMOUNT 10 TO 20 MM. WIND SOUTHWEST 40 KM/H
GUSTING TO 60 BECOMING WEST 20 THIS EVENING THEN LIGHT AFTER
MIDNIGHT. LOW 8.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND BECOMING NORTHEAST
20 KM/H LATE IN THE MORNING. HIGH 8. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLEAR. PARTLY CLOUDY BEFORE MORNING WITH 30 PERCENT
CHANCE OF SHOWERS. WIND NORTHEAST 30 KM/H. LOW PLUS 1.
HALTON - PEEL
GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TONIGHT..CLOUDY. SHOWERS BEGINNING EARLY THIS EVENING AND ENDING NEAR
MIDNIGHT THEN 40 PERCENT CHANCE OF SHOWERS LATE THIS EVENING AND
AFTER MIDNIGHT. RISK OF A THUNDERSTORM EARLY THIS EVENING. WIND
SOUTHWEST 40 KM/H GUSTING TO 60 BECOMING NORTHWEST 20 AFTER
MIDNIGHT. LOW PLUS 4.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND NORTH 20 KM/H
BECOMING LIGHT IN THE AFTERNOON. HIGH 7. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS BEFORE MORNING. WIND
BECOMING EAST 30 KM/H AFTER MIDNIGHT. LOW MINUS 1. WIND CHILL
MINUS 8 OVERNIGHT.
NEWMARKET - GEORGINA - NORTHERN YORK REGION
UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION
INNISFIL - NEW TECUMSETH - ANGUS
BARRIE - ORILLIA - MIDLAND.
TONIGHT..CLOUDY. SHOWERS BEGINNING EARLY THIS EVENING AND ENDING NEAR
MIDNIGHT THEN 40 PERCENT CHANCE OF DRIZZLE OVERNIGHT. RISK OF A
THUNDERSTORM EARLY THIS EVENING. LOCAL AMOUNT 10 TO 20 MM. WIND EAST
20 KM/H BECOMING LIGHT THIS EVENING. LOW PLUS 2.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. HIGH PLUS 5. UV INDEX 2
OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. WIND
BECOMING EAST 20 KM/H BEFORE MORNING. LOW MINUS 4. WIND CHILL
MINUS 10 OVERNIGHT.
HURON - PERTH
KITCHENER - CAMBRIDGE - REGION OF WATERLOO
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY.
TONIGHT..CLOUDY. SHOWERS WITH THUNDERSTORMS BEGINNING EARLY THIS
EVENING AND ENDING LATE THIS EVENING. LOCAL AMOUNT 15 TO 25 MM. WIND
BECOMING SOUTHWEST 20 KM/H THEN NORTH 30 THIS EVENING. LOW ZERO.
WEDNESDAY..MAINLY CLOUDY. CLEARING IN THE AFTERNOON. WIND NORTH
30 KM/H. HIGH PLUS 3. UV INDEX 4 OR MODERATE.
WEDNESDAY NIGHT..INCREASING CLOUDINESS NEAR MIDNIGHT. WIND NORTH
30 KM/H BECOMING EAST 30 BEFORE MORNING. LOW MINUS 1. WIND CHILL
MINUS 7 IN THE EVENING.
MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY
ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY
SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY
BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY
HANOVER - DUNDALK - SOUTHERN GREY COUNTY
OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY.
TONIGHT..RAIN SHOWERS ENDING LATE THIS EVENING THEN CLOUDY WITH
40 PERCENT CHANCE OF DRIZZLE LATE THIS EVENING AND AFTER MIDNIGHT
THEN 30 PERCENT CHANCE OF FLURRIES OVERNIGHT. RISK OF A THUNDERSTORM
EARLY THIS EVENING. RISK OF FREEZING DRIZZLE OVERNIGHT. LOCAL
RAINFALL AMOUNT 10 TO 20 MM. WIND NORTH 20 KM/H. LOW MINUS 1.
WEDNESDAY..A MIX OF SUN AND CLOUD. CLEARING IN THE AFTERNOON. WIND UP
TO 15 KM/H. HIGH PLUS 2. WIND CHILL MINUS 7 IN THE MORNING. UV
INDEX 5 OR MODERATE.
WEDNESDAY NIGHT..INCREASING CLOUDINESS NEAR MIDNIGHT. WIND BECOMING
EAST 30 KM/H NEAR MIDNIGHT. LOW MINUS 2. WIND CHILL MINUS 9
OVERNIGHT.
BELLEVILLE - QUINTE - NORTHUMBERLAND
PICTON - SANDBANKS PARK
NAPANEE - CONSECON
PETERBOROUGH - KAWARTHA LAKES
STIRLING - TWEED - MADOC.
TONIGHT..A FEW SHOWERS ENDING AFTER MIDNIGHT THEN CLOUDY. RISK OF A
THUNDERSTORM THIS EVENING. LOCAL AMOUNT 15 TO 25 MM. LOW PLUS 2.
WEDNESDAY..CLOUDY. CLEARING LATE IN THE AFTERNOON. HIGH 6. UV INDEX 2
OR LOW.
WEDNESDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY AFTER MIDNIGHT. WIND
UP TO 15 KM/H. LOW MINUS 3. WIND CHILL MINUS 8 OVERNIGHT.
KINGSTON - ODESSA - FRONTENAC ISLANDS
TAMWORTH - SYDENHAM - SOUTH FRONTENAC
KALADAR - BANNOCKBURN - BON ECHO PARK
GANANOQUE - MALLORYTOWN.
TONIGHT..PERIODS OF RAIN ENDING BEFORE MORNING THEN CLOUDY. RISK OF A
THUNDERSTORM EARLY THIS EVENING. AMOUNT 15 MM. TEMPERATURE STEADY
NEAR PLUS 1.
WEDNESDAY..OVERCAST. HIGH PLUS 5. UV INDEX 2 OR LOW.
WEDNESDAY NIGHT..CLEARING IN THE EVENING. WIND UP TO 15 KM/H. LOW
MINUS 3. WIND CHILL MINUS 7 OVERNIGHT.
BANCROFT - HASTINGS HIGHLANDS - DENBIGH
BROCKVILLE - PRESCOTT
WESTPORT - CHARLESTON LAKE
MERRICKVILLE-WOLFORD - KEMPTVILLE
PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY.
TONIGHT..PERIODS OF RAIN ENDING BEFORE MORNING THEN CLOUDY. LOW ZERO.
WEDNESDAY..CLOUDY. CLEARING LATE IN THE AFTERNOON. HIGH 6. UV INDEX 2
OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS BEFORE MORNING. WIND UP
TO 15 KM/H. LOW MINUS 4. WIND CHILL MINUS 9 OVERNIGHT.
CITY OF OTTAWA
GATINEAU
PRESCOTT AND RUSSELL
CORNWALL - MORRISBURG
SMITHS FALLS - PERTH - EASTERN LANARK COUNTY.
TONIGHT..CLOUDY. 60 PERCENT CHANCE OF DRIZZLE EARLY THIS EVENING.
PERIODS OF RAIN BEGINNING EARLY THIS EVENING THEN CHANGING TO
60 PERCENT CHANCE OF DRIZZLE AFTER MIDNIGHT. RISK OF FREEZING
DRIZZLE OVERNIGHT. LOW ZERO.
WEDNESDAY..CLOUDY. CLEARING LATE IN THE AFTERNOON. HIGH 6. UV INDEX 2
OR LOW.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS BEFORE MORNING. WIND UP
TO 15 KM/H. LOW MINUS 4. WIND CHILL MINUS 9 OVERNIGHT.
PORT CARLING - PORT SEVERN
BRACEBRIDGE - GRAVENHURST
HALIBURTON - MINDEN - SOUTHERN HALIBURTON COUNTY.
TONIGHT..PERIODS OF RAIN ENDING NEAR MIDNIGHT THEN CLOUDY. A FEW
THUNDERSTORMS EARLY THIS EVENING. LOCAL AMOUNT 10 TO 15 MM. WIND UP
TO 15 KM/H. LOW MINUS 2. WIND CHILL MINUS 7 OVERNIGHT.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND UP TO 15 KM/H.
HIGH PLUS 4. WIND CHILL MINUS 6 IN THE MORNING. UV INDEX 4 OR
MODERATE.
WEDNESDAY NIGHT..A FEW CLOUDS. INCREASING CLOUDINESS OVERNIGHT. WIND
UP TO 15 KM/H. LOW MINUS 7. WIND CHILL MINUS 13 OVERNIGHT.
TOWN OF PARRY SOUND - ROSSEAU - KILLBEAR PARK
HUNTSVILLE - BAYSVILLE
OXTONGUE LAKE - FORT IRWIN - NORTHERN HALIBURTON COUNTY.
TONIGHT..PERIODS OF RAIN ENDING NEAR MIDNIGHT THEN CLOUDY WITH
30 PERCENT CHANCE OF FLURRIES. RISK OF A THUNDERSTORM EARLY THIS
EVENING. RISK OF FREEZING DRIZZLE OVERNIGHT. WIND UP TO 15 KM/H. LOW
MINUS 2. WIND CHILL MINUS 7 OVERNIGHT.
WEDNESDAY..CLOUDY. CLEARING IN THE AFTERNOON. WIND UP TO 15 KM/H.
HIGH PLUS 4. WIND CHILL MINUS 6 IN THE MORNING. UV INDEX 4 OR
MODERATE.
WEDNESDAY NIGHT..A FEW CLOUDS. INCREASING CLOUDINESS OVERNIGHT. WIND
UP TO 15 KM/H. LOW MINUS 7. WIND CHILL MINUS 13 OVERNIGHT.
RENFREW - PEMBROKE - BARRY'S BAY
ALGONQUIN
BURK'S FALLS - BAYFIELD INLET.
TONIGHT..CLOUDY. PERIODS OF RAIN BEGINNING EARLY THIS EVENING AND
ENDING NEAR MIDNIGHT THEN 30 PERCENT CHANCE OF FLURRIES OVERNIGHT.
RISK OF FREEZING DRIZZLE OVERNIGHT. WIND UP TO 15 KM/H. LOW MINUS 3.
WIND CHILL MINUS 8 OVERNIGHT.
WEDNESDAY..CLEARING LATE IN THE MORNING. WIND UP TO 15 KM/H. HIGH
PLUS 3. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 4 OR MODERATE.
WEDNESDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. WIND UP
TO 15 KM/H. LOW MINUS 6. WIND CHILL MINUS 11 OVERNIGHT.
END
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