FPCN11 CWTO 121921 FORECASTS FOR SOUTHERN ONTARIO AND THE NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA AT 3.30 PM EDT SUNDAY 12 MAY 2013 FOR TONIGHT MONDAY AND MONDAY NIGHT. THE NEXT SCHEDULED FORECAST WILL BE ISSUED AT 5.00 AM MONDAY. CITY OF TORONTO. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS THIS EVENING. CLEARING OVERNIGHT. WIND WEST 40 KM/H GUSTING TO 60 DIMINISHING TO 20 AFTER MIDNIGHT. LOW PLUS 1 WITH PATCHY FROST. MONDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE AFTERNOON. WIND WEST 20 KM/H. HIGH 12. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. WIND WEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 2 WITH PATCHY FROST. WINDSOR - ESSEX - CHATHAM-KENT. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING. CLEARING NEAR MIDNIGHT. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..SUNNY. HIGH 13. UV INDEX 6 OR HIGH. MONDAY NIGHT..MAINLY CLOUDY. LOW PLUS 3. SARNIA - LAMBTON. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING. CLEARING NEAR MIDNIGHT. WIND NORTHWEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..MAINLY SUNNY. HIGH 10. UV INDEX 7 OR HIGH. MONDAY NIGHT..INCREASING CLOUDINESS EARLY IN THE EVENING. LOW PLUS 2. ELGIN. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..A MIX OF SUN AND CLOUD. CLEARING LATE IN THE AFTERNOON. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING. HIGH 10. UV INDEX 7 OR HIGH. MONDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY NEAR MIDNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW PLUS 1 WITH PATCHY FROST. LONDON - MIDDLESEX. FROST WARNING IN EFFECT. TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES EARLY THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..MAINLY SUNNY. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING. HIGH 9. UV INDEX 7 OR HIGH. MONDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY NEAR MIDNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT IN THE EVENING. LOW PLUS 2 WITH PATCHY FROST. SIMCOE - DELHI - NORFOLK DUNNVILLE - CALEDONIA - HALDIMAND. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY WITH 60 PERCENT CHANCE OF SHOWERS EARLY THIS EVENING. CLEARING NEAR MIDNIGHT. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. CLEARING LATE IN THE AFTERNOON. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING. HIGH 10. UV INDEX 5 OR MODERATE. MONDAY NIGHT..A FEW CLOUDS. WIND WEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 1 WITH PATCHY FROST. OXFORD - BRANT. FROST WARNING IN EFFECT. TONIGHT..CLOUDY WITH 70 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES EARLY THIS EVENING. CLEARING NEAR MIDNIGHT. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT AFTER MIDNIGHT. LOW ZERO WITH FROST. MONDAY..INCREASING CLOUDINESS EARLY IN THE MORNING. CLEARING LATE IN THE AFTERNOON. WIND BECOMING NORTHWEST 20 KM/H LATE IN THE MORNING. HIGH 9. UV INDEX 5 OR MODERATE. MONDAY NIGHT..PARTLY CLOUDY. BECOMING CLEAR IN THE EVENING. WIND WEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 1 WITH PATCHY FROST. NIAGARA. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS THIS EVENING. CLEARING OVERNIGHT. WIND WEST 30 KM/H GUSTING TO 50. LOW PLUS 1 WITH PATCHY FROST. MONDAY..A MIX OF SUN AND CLOUD. CLEARING IN THE AFTERNOON. WIND WEST 30 KM/H. HIGH 11. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. WIND WEST 20 KM/H. LOW PLUS 3. CITY OF HAMILTON BURLINGTON - OAKVILLE MISSISSAUGA - BRAMPTON. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY WITH 70 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES THIS EVENING. CLEARING OVERNIGHT. WIND WEST 40 KM/H GUSTING TO 60 DIMINISHING TO 20 BEFORE MORNING. LOW ZERO WITH FROST. MONDAY..MAINLY SUNNY. WIND WEST 20 KM/H BECOMING LIGHT IN THE MORNING. HIGH 10. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST. HALTON HILLS - MILTON CALEDON STRATFORD - MITCHELL - SOUTHERN PERTH COUNTY LISTOWEL - MILVERTON - NORTHERN PERTH COUNTY KITCHENER - CAMBRIDGE - REGION OF WATERLOO GUELPH - ERIN - SOUTHERN WELLINGTON COUNTY. FROST WARNING IN EFFECT. TONIGHT..PARTLY CLOUDY. 70 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES THIS EVENING. WIND WEST 40 KM/H GUSTING TO 60 BECOMING LIGHT OVERNIGHT. LOW ZERO WITH FROST. MONDAY..MAINLY SUNNY. WIND BECOMING WEST 20 KM/H LATE IN THE AFTERNOON. HIGH 9. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. INCREASING CLOUDINESS OVERNIGHT. WIND WEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW MINUS 1 WITH FROST. VAUGHAN - RICHMOND HILL - MARKHAM NEWMARKET - GEORGINA - NORTHERN YORK REGION UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION. FROST WARNING IN EFFECT. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50. LOW ZERO WITH FROST. MONDAY..SUNNY. WIND NORTHWEST 20 KM/H. HIGH 11. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW MINUS 1 WITH FROST. PICKERING - OSHAWA - SOUTHERN DURHAM REGION COBOURG - COLBORNE - WESTERN NORTHUMBERLAND COUNTY. FROST WARNING IN EFFECT. TONIGHT..PARTLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING. WIND WEST 30 KM/H GUSTING TO 50. LOW ZERO WITH FROST. MONDAY..SUNNY. WIND NORTHWEST 20 KM/H. HIGH 11. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW ZERO WITH FROST. GODERICH - BLUEWATER - SOUTHERN HURON COUNTY WINGHAM - BLYTH - NORTHERN HURON COUNTY. FROST WARNING IN EFFECT. TONIGHT..PARTLY CLOUDY WITH 70 PERCENT CHANCE OF SHOWERS. WIND WEST 30 KM/H GUSTING TO 50. LOW ZERO WITH PATCHY FROST. MONDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE MORNING. WIND NORTHWEST 30 KM/H BECOMING LIGHT IN THE MORNING. WIND BECOMING NORTHWEST 20 LATE IN THE MORNING. HIGH 7. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. INCREASING CLOUDINESS OVERNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 2 WITH PATCHY FROST. MOUNT FOREST - ARTHUR - NORTHERN WELLINGTON COUNTY DUFFERIN - INNISFIL HANOVER - DUNDALK - SOUTHERN GREY COUNTY. FROST WARNING IN EFFECT. TONIGHT..A FEW RAIN SHOWERS OR FLURRIES ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. WIND WEST 30 KM/H GUSTING TO 50 BECOMING LIGHT LATE THIS EVENING. LOW ZERO WITH FROST. MONDAY..CLEARING IN THE MORNING. WIND BECOMING NORTHWEST 20 KM/H IN THE AFTERNOON. HIGH 9. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. INCREASING CLOUDINESS AFTER MIDNIGHT. WIND BECOMING NORTHWEST 20 KM/H NEAR MIDNIGHT. LOW ZERO WITH FROST. SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY. FROST WARNING IN EFFECT. TONIGHT..A FEW FLURRIES ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. LOCAL AMOUNT 2 CM. WIND WEST 30 KM/H GUSTING TO 50. LOW ZERO WITH PATCHY FROST. MONDAY..MAINLY SUNNY. WIND NORTHWEST 30 KM/H BECOMING LIGHT IN THE MORNING. WIND BECOMING WEST 20 LATE IN THE MORNING. HIGH 7. UV INDEX 6 OR HIGH. MONDAY NIGHT..A FEW CLOUDS. WIND NORTHWEST 20 KM/H BECOMING LIGHT AFTER MIDNIGHT. LOW PLUS 2 WITH RISK OF FROST. BARRIE - COLLINGWOOD - HILLSDALE. FROST WARNING IN EFFECT. TONIGHT..A FEW FLURRIES ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. LOCAL AMOUNT 2 CM. WIND WEST 40 KM/H GUSTING TO 60. LOW ZERO WITH PATCHY FROST. MONDAY..MAINLY SUNNY. WIND NORTHWEST 30 KM/H. HIGH 9. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY OVERNIGHT. WIND NORTHWEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 1 WITH FROST. MIDLAND - COLDWATER - ORR LAKE ORILLIA - LAGOON CITY - WASHAGO. TONIGHT..A FEW FLURRIES ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. LOCAL AMOUNT 2 CM. WIND WEST 40 KM/H GUSTING TO 60. LOW ZERO. MONDAY..MAINLY SUNNY. WIND NORTHWEST 30 KM/H. HIGH 9. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. BECOMING PARTLY CLOUDY BEFORE MORNING. WIND NORTHWEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW PLUS 1 WITH FROST. BELLEVILLE - QUINTE WEST - EASTERN NORTHUMBERLAND COUNTY STIRLING - TWEED - SOUTH FRONTENAC. TONIGHT..PARTLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING AND AFTER MIDNIGHT. WIND SOUTHWEST 30 KM/H GUSTING TO 50. LOW PLUS 2 WITH RISK OF FROST. MONDAY..MAINLY SUNNY. HIGH 13. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW ZERO WITH FROST. PICTON - SANDBANKS PARK. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING AND AFTER MIDNIGHT. WIND SOUTHWEST 40 KM/H GUSTING TO 60 BECOMING WEST 20 NEAR MIDNIGHT. LOW PLUS 3. MONDAY..MAINLY SUNNY. WIND WEST 20 KM/H INCREASING TO 40 GUSTING TO 60 IN THE AFTERNOON. HIGH 11. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. WIND WEST 40 KM/H GUSTING TO 60 BECOMING LIGHT AFTER MIDNIGHT. LOW PLUS 4. NAPANEE - CONSECON KINGSTON - ODESSA - FRONTENAC ISLANDS. TONIGHT..PARTLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING AND AFTER MIDNIGHT. WIND SOUTHWEST 30 KM/H GUSTING TO 50. LOW PLUS 2 WITH RISK OF FROST. MONDAY..MAINLY SUNNY. HIGH 13. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW PLUS 1 WITH PATCHY FROST. PETERBOROUGH - KAWARTHA LAKES. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES THIS EVENING. WIND WEST 40 KM/H GUSTING TO 60. LOW PLUS 1. MONDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE MORNING. WIND WEST 30 KM/H BECOMING LIGHT IN THE MORNING. HIGH 10. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW MINUS 2 WITH FROST. BANCROFT - BON ECHO PARK. TONIGHT..A FEW RAIN SHOWERS AND FLURRIES ENDING NEAR MIDNIGHT THEN MAINLY CLOUDY. WIND SOUTHWEST 20 KM/H. LOW ZERO. MONDAY..A MIX OF SUN AND CLOUD. WIND WEST 20 KM/H BECOMING LIGHT EARLY IN THE MORNING. HIGH 10. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW MINUS 2 WITH FROST. BROCKVILLE - LEEDS AND GRENVILLE. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF SHOWERS THIS EVENING. WIND WEST 20 KM/H. LOW PLUS 2 WITH RISK OF FROST. MONDAY..MAINLY SUNNY. INCREASING CLOUDINESS NEAR NOON. WIND WEST 20 KM/H BECOMING LIGHT EARLY IN THE MORNING. HIGH 13. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEARING IN THE EVENING. LOW ZERO WITH FROST. CITY OF OTTAWA GATINEAU. TONIGHT..MAINLY CLOUDY. 40 PERCENT CHANCE OF SHOWERS THIS EVENING AND AFTER MIDNIGHT. WIND SOUTHWEST 30 KM/H. LOW PLUS 2 WITH RISK OF FROST. MONDAY..MAINLY CLOUDY. WIND WEST 30 KM/H. HIGH 11. UV INDEX 5 OR MODERATE. MONDAY NIGHT..CLEARING EARLY IN THE EVENING. WIND WEST 20 KM/H BECOMING LIGHT NEAR MIDNIGHT. LOW ZERO WITH FROST. PRESCOTT AND RUSSELL CORNWALL - MORRISBURG. TONIGHT..MAINLY CLOUDY. 30 PERCENT CHANCE OF SHOWERS THIS EVENING. WIND SOUTHWEST 20 KM/H. LOW PLUS 3. MONDAY..MAINLY CLOUDY. CLEARING LATE IN THE AFTERNOON. WIND WEST 20 KM/H BECOMING LIGHT IN THE AFTERNOON. HIGH 12. UV INDEX 5 OR MODERATE. MONDAY NIGHT..CLEAR. LOW MINUS 1 WITH FROST. SMITHS FALLS - LANARK - SHARBOT LAKE. TONIGHT..MAINLY CLOUDY. 60 PERCENT CHANCE OF RAIN SHOWERS OR FLURRIES THIS EVENING. WIND SOUTHWEST 20 KM/H. LOW PLUS 2 WITH RISK OF FROST. MONDAY..A MIX OF SUN AND CLOUD. WIND WEST 20 KM/H BECOMING LIGHT LATE IN THE MORNING. HIGH 11. UV INDEX 6 OR HIGH. MONDAY NIGHT..PARTLY CLOUDY. CLEARING NEAR MIDNIGHT. LOW ZERO WITH FROST. PARRY SOUND - MUSKOKA BURK'S FALLS - BAYFIELD INLET. TONIGHT..A FEW FLURRIES ENDING AFTER MIDNIGHT THEN CLEARING. LOCAL AMOUNT 2 CM. WIND WEST 30 KM/H GUSTING TO 50. LOW PLUS 1. MONDAY..MAINLY SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT LATE IN THE MORNING. HIGH 8. UV INDEX 6 OR HIGH. MONDAY NIGHT..A FEW CLOUDS. LOW MINUS 1 WITH FROST. HALIBURTON. TONIGHT..A FEW RAIN SHOWERS AND FLURRIES CHANGING TO A FEW FLURRIES THIS EVENING AND ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. WIND SOUTHWEST 20 KM/H BECOMING NORTHWEST 20 LATE THIS EVENING. LOW ZERO. MONDAY..MAINLY SUNNY. WIND NORTHWEST 20 KM/H BECOMING LIGHT EARLY IN THE MORNING. HIGH 9. UV INDEX 6 OR HIGH. MONDAY NIGHT..A FEW CLOUDS. LOW MINUS 2 WITH FROST. RENFREW - PEMBROKE - BARRY'S BAY. TONIGHT..A FEW RAIN SHOWERS AND FLURRIES ENDING NEAR MIDNIGHT THEN CLEARING. WIND SOUTHWEST 20 KM/H. LOW PLUS 1. MONDAY..A MIX OF SUN AND CLOUD. WIND WEST 20 KM/H BECOMING LIGHT IN THE AFTERNOON. HIGH 10. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW MINUS 1 WITH FROST. ALGONQUIN. TONIGHT..A FEW RAIN SHOWERS AND FLURRIES CHANGING TO A FEW FLURRIES THIS EVENING AND ENDING AFTER MIDNIGHT THEN PARTLY CLOUDY. WIND SOUTHWEST 20 KM/H BECOMING NORTHWEST 20 LATE THIS EVENING. LOW ZERO. MONDAY..A MIX OF SUN AND CLOUD. BECOMING SUNNY IN THE AFTERNOON. HIGH 10. UV INDEX 6 OR HIGH. MONDAY NIGHT..CLEAR. LOW MINUS 4 WITH FROST. END