FPCN11 CWTO 221040 AAA
UPDATED FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL
REGION ISSUED BY ENVIRONMENT CANADA AT 6:39 A.M. EDT SUNDAY 22 MARCH
2026 FOR TODAY AND MONDAY.
THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 11:00 A.M. EDT.

WINDSOR - LEAMINGTON - ESSEX COUNTY.
TODAY..CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS MORNING. A FEW
 SHOWERS BEGINNING LATE THIS MORNING. RISK OF A THUNDERSTORM THIS
 MORNING. WIND BECOMING NORTH 20 KM/H GUSTING TO 40 NEAR NOON.
 HIGH 15. UV INDEX 2 OR LOW.
TONIGHT..CLOUDY. WIND NORTH 30 KM/H GUSTING TO 50. LOW ZERO.
MONDAY..CLOUDY. WIND NORTH 20 KM/H GUSTING TO 40. HIGH PLUS 3. UV
 INDEX 3 OR MODERATE.

CHATHAM-KENT - RONDEAU PARK.
TODAY..CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS MORNING. A FEW
 SHOWERS BEGINNING LATE THIS MORNING. RISK OF A THUNDERSTORM THIS
 MORNING. WIND BECOMING NORTH 20 KM/H GUSTING TO 40 NEAR NOON.
 HIGH 15. UV INDEX 2 OR LOW.
TONIGHT..CLOUDY. WIND NORTH 30 KM/H GUSTING TO 50. LOW ZERO.
MONDAY..OVERCAST. WIND NORTH 20 KM/H GUSTING TO 40. HIGH PLUS 3. UV
 INDEX 3 OR MODERATE.

SARNIA - PETROLIA - WESTERN LAMBTON COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING EARLY THIS MORNING AND ENDING THIS
 AFTERNOON. RISK OF A THUNDERSTORM THIS MORNING. WIND BECOMING NORTH
 30 KM/H GUSTING TO 50 NEAR NOON. HIGH 11. UV INDEX 2 OR LOW.
TONIGHT..CLOUDY. WIND NORTH 30 KM/H GUSTING TO 50. LOW MINUS 1. WIND
 CHILL MINUS 8 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING. WIND
 NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. WIND CHILL MINUS 7 IN
 THE MORNING. UV INDEX 3 OR MODERATE.

WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING EARLY THIS MORNING AND ENDING THIS
 AFTERNOON. RISK OF A THUNDERSTORM THIS MORNING. WIND BECOMING NORTH
 30 KM/H GUSTING TO 50 NEAR NOON. HIGH 11. UV INDEX 2 OR LOW.
TONIGHT..CLOUDY. WIND NORTH 30 KM/H GUSTING TO 50. LOW MINUS 1. WIND
 CHILL MINUS 8 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING. WIND
 NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. WIND CHILL MINUS 7 IN
 THE MORNING. UV INDEX 3 OR MODERATE.

RODNEY - SHEDDEN - WESTERN ELGIN COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING THIS MORNING. RISK OF A THUNDERSTORM
 THIS MORNING. WIND BECOMING NORTHWEST 20 KM/H THIS AFTERNOON.
 HIGH 12. UV INDEX 2 OR LOW.
TONIGHT..OVERCAST. WIND NORTHEAST 20 KM/H GUSTING TO 40. LOW MINUS 1.
MONDAY..CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. UV
 INDEX 3 OR MODERATE.

ST. THOMAS - AYLMER - EASTERN ELGIN COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING THIS MORNING. RISK OF A THUNDERSTORM
 THIS MORNING. WIND BECOMING NORTHWEST 20 KM/H THIS AFTERNOON.
 HIGH 12. UV INDEX 2 OR LOW.
TONIGHT..OVERCAST. WIND NORTHEAST 20 KM/H GUSTING TO 40. LOW MINUS 1.
MONDAY..CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. UV
 INDEX 3 OR MODERATE.

STRATHROY - KOMOKA - WESTERN MIDDLESEX COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING EARLY THIS MORNING AND ENDING THIS
 AFTERNOON. RISK OF A THUNDERSTORM THIS MORNING. WIND BECOMING NORTH
 30 KM/H GUSTING TO 50 NEAR NOON. HIGH 11. UV INDEX 2 OR LOW.
TONIGHT..CLOUDY. WIND NORTH 30 KM/H GUSTING TO 50. LOW MINUS 1. WIND
 CHILL MINUS 8 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING. WIND
 NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. WIND CHILL MINUS 7 IN
 THE MORNING. UV INDEX 2 OR LOW.

LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.
TODAY..CLOUDY. SHOWERS BEGINNING EARLY THIS MORNING AND ENDING THIS
 AFTERNOON. RISK OF A THUNDERSTORM THIS MORNING. WIND BECOMING NORTH
 30 KM/H GUSTING TO 50 NEAR NOON. HIGH 11. UV INDEX 2 OR LOW.
TONIGHT..OVERCAST. WIND NORTH 30 KM/H GUSTING TO 50. LOW MINUS 1.
 WIND CHILL MINUS 8 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING. WIND
 NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. WIND CHILL MINUS 7 IN
 THE MORNING. UV INDEX 2 OR LOW.

SIMCOE - DELHI - NORFOLK.
TODAY..CLOUDY. SHOWERS BEGINNING THIS MORNING. RISK OF A THUNDERSTORM
 THIS MORNING. WIND BECOMING NORTHWEST 20 KM/H THIS AFTERNOON.
 HIGH 12. UV INDEX 2 OR LOW.
TONIGHT..OVERCAST. WIND NORTHEAST 20 KM/H GUSTING TO 40. LOW MINUS 1.
MONDAY..CLOUDY. WIND NORTHWEST 30 KM/H GUSTING TO 50. HIGH PLUS 2. UV
 INDEX 3 OR MODERATE.

CALEDON.
TODAY..RAIN SHOWERS ENDING THIS AFTERNOON THEN CLOUDY. RISK OF
 FREEZING RAIN EARLY THIS MORNING. WIND BECOMING NORTH 20 KM/H
 GUSTING TO 40 THIS AFTERNOON. HIGH 8. UV INDEX 3 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF FLURRIES BEFORE MORNING. WIND
 NORTH 20 KM/H GUSTING TO 40. LOW MINUS 3. WIND CHILL MINUS 9
 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING AND
 EARLY IN THE AFTERNOON. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 HIGH ZERO. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 3 OR
 MODERATE.

KITCHENER - CAMBRIDGE - REGION OF WATERLOO.
TODAY..RAIN SHOWERS ENDING THIS AFTERNOON THEN CLOUDY. RISK OF
 FREEZING RAIN EARLY THIS MORNING. WIND BECOMING NORTH 20 KM/H
 GUSTING TO 40 THIS AFTERNOON. HIGH 8. UV INDEX 3 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF FLURRIES BEFORE MORNING. WIND
 NORTH 20 KM/H GUSTING TO 40. LOW MINUS 3. WIND CHILL MINUS 9
 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING AND
 EARLY IN THE AFTERNOON. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 HIGH ZERO. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 3 OR
 MODERATE.

GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY.
TODAY..RAIN SHOWERS ENDING THIS AFTERNOON THEN CLOUDY. RISK OF
 FREEZING RAIN EARLY THIS MORNING. WIND BECOMING NORTH 20 KM/H
 GUSTING TO 40 THIS AFTERNOON. HIGH 8. UV INDEX 3 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF FLURRIES BEFORE MORNING. WIND
 NORTH 20 KM/H GUSTING TO 40. LOW MINUS 3. WIND CHILL MINUS 9
 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING AND
 EARLY IN THE AFTERNOON. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 HIGH ZERO. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 2 OR LOW.

MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY.
TODAY..RAIN SHOWERS ENDING THIS AFTERNOON THEN CLOUDY. RISK OF
 FREEZING RAIN EARLY THIS MORNING. WIND BECOMING NORTH 20 KM/H
 GUSTING TO 40 THIS AFTERNOON. HIGH 8. UV INDEX 3 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF FLURRIES BEFORE MORNING. WIND
 NORTH 20 KM/H GUSTING TO 40. LOW MINUS 3. WIND CHILL MINUS 9
 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING AND
 EARLY IN THE AFTERNOON. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 HIGH ZERO. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 2 OR LOW.

ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.
TODAY..RAIN SHOWERS ENDING THIS AFTERNOON THEN CLOUDY. RISK OF
 FREEZING RAIN EARLY THIS MORNING. WIND BECOMING NORTH 20 KM/H
 GUSTING TO 40 THIS AFTERNOON. HIGH 8. UV INDEX 3 OR MODERATE.
TONIGHT..CLOUDY. 40 PERCENT CHANCE OF FLURRIES BEFORE MORNING. WIND
 NORTH 20 KM/H GUSTING TO 40. LOW MINUS 3. WIND CHILL MINUS 9
 OVERNIGHT.
MONDAY..CLOUDY. 40 PERCENT CHANCE OF FLURRIES IN THE MORNING AND
 EARLY IN THE AFTERNOON. WIND NORTHWEST 30 KM/H GUSTING TO 50.
 HIGH ZERO. WIND CHILL MINUS 9 IN THE MORNING. UV INDEX 2 OR LOW.

REMAINDER UNCHANGED.

END