Climate averages 1991–2020
Weather in Canada in September
In September, average daytime highs across the 86 cities listed in Canada range from 16.0°C in Sherwood Park to 22.2°C in Kelowna. Monthly rainfall ranges from 35 mm in Kamloops to 173 mm in Maple Ridge.
Long-term climate patterns, not a forecast for a particular trip.
City by city
September in Canada
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Toronto | 20.8°C14.2°C | 14.2°C | 69 | 8.7 |
| Montréal | 19.3°C11.3°C | 11.3°C | 99 | 10.2 |
| Calgary | 17.5°C5.6°C | 5.6°C | 44 | 7.9 |
| Ottawa | 20.4°C12.0°C | 12.0°C | 95 | 10.3 |
| Edmonton | 16.7°C7.2°C | 7.2°C | 38 | 7.0 |
| Winnipeg | 18.5°C9.4°C | 9.4°C | 68 | 9.1 |
| Mississauga | 21.3°C13.5°C | 13.5°C | 75 | 9.1 |
| Vancouver | 18.6°C11.9°C | 11.9°C | 125 | 10.2 |
| Brampton | 21.1°C12.5°C | 12.5°C | 71 | 9.0 |
| Hamilton | 21.6°C15.1°C | 15.1°C | 77 | 9.3 |
| Surrey | 19.6°C10.7°C | 10.7°C | 86 | 8.9 |
| Québec | 18.9°C10.4°C | 10.4°C | 109 | 11.6 |
| Halifax | 18.6°C13.7°C | 13.7°C | 97 | 9.4 |
| Laval | 20.4°C12.2°C | 12.2°C | 92 | 10.1 |
| London, Canada | 21.4°C13.0°C | 13.0°C | 86 | 9.7 |
| Etobicoke | 21.2°C13.9°C | 13.9°C | 69 | 8.7 |
| Markham | 21.1°C13.3°C | 13.3°C | 81 | 9.0 |
| Vaughan | 21.0°C13.0°C | 13.0°C | 69 | 8.7 |
| Gatineau | 20.3°C12.2°C | 12.2°C | 95 | 10.3 |
| Victoria | 17.4°C12.3°C | 12.3°C | 39 | 6.5 |
| Saskatoon | 18.1°C8.1°C | 8.1°C | 38 | 5.7 |
| Kitchener | 20.7°C11.6°C | 11.6°C | 79 | 9.5 |
| Burnaby | 19.1°C11.8°C | 11.8°C | 125 | 10.2 |
| Longueuil | 20.4°C12.3°C | 12.3°C | 99 | 10.2 |
| Regina | 18.3°C8.2°C | 8.2°C | 40 | 6.7 |
| Oakville | 21.4°C14.7°C | 14.7°C | 75 | 9.1 |
| Richmond Hill | 20.9°C12.7°C | 12.7°C | 69 | 8.7 |
| Burlington | 21.3°C14.2°C | 14.2°C | 75 | 9.1 |
| Nepean | 20.4°C11.8°C | 11.8°C | 90 | 9.9 |
| Oshawa | 20.8°C14.4°C | 14.4°C | 80 | 9.0 |
| Greater Sudbury | 18.6°C10.5°C | 10.5°C | 92 | 11.0 |
| Gloucester, Canada | 20.3°C11.8°C | 11.8°C | 90 | 9.9 |
| Saguenay | 17.2°C8.6°C | 8.6°C | 127 | 13.8 |
| Coquitlam | 20.0°C11.7°C | 11.7°C | 142 | 11.2 |
| Barrie | 20.1°C12.2°C | 12.2°C | 80 | 11.0 |
| Villeray–Saint-Michel–Parc-Extension | 20.3°C11.9°C | 11.9°C | 99 | 10.2 |
| Kelowna | 22.2°C12.7°C | 12.7°C | 43 | 7.7 |
| Trois-Rivières | 19.6°C11.7°C | 11.7°C | 98 | 11.0 |
| Guelph | 20.6°C11.8°C | 11.8°C | 77 | 9.5 |
| Mercier–Hochelaga-Maisonneuve | 20.4°C12.3°C | 12.3°C | 99 | 10.2 |
| Abbotsford | 19.5°C9.8°C | 9.8°C | 102 | 9.5 |
| Whitby | 21.0°C14.5°C | 14.5°C | 80 | 9.4 |
| St. Catharines | 21.5°C15.5°C | 15.5°C | 85 | 9.7 |
| Milton | 21.4°C13.5°C | 13.5°C | 73 | 9.1 |
| Langley | 20.1°C10.9°C | 10.9°C | 86 | 8.9 |
| Kingston, Canada | 20.2°C14.8°C | 14.8°C | 95 | 10.1 |
| Cambridge, Canada | 21.2°C12.3°C | 12.3°C | 77 | 9.5 |
| Sherbrooke | 19.3°C10.8°C | 10.8°C | 106 | 11.5 |
| Orléans, Canada | 20.0°C11.6°C | 11.6°C | 96 | 10.3 |
| Saint-Louis-de-Terrebonne | 20.0°C11.9°C | 11.9°C | 94 | 10.0 |
| Ajax | 21.0°C14.3°C | 14.3°C | 85 | 9.1 |
| Thornhill | 21.0°C13.7°C | 13.7°C | 69 | 8.7 |
| Terrebonne | 20.3°C12.2°C | 12.2°C | 94 | 10.0 |
| St. John's | 16.3°C10.7°C | 10.7°C | 93 | 10.7 |
| Thunder Bay | 17.8°C11.7°C | 11.7°C | 84 | 10.5 |
| Sydney, Canada | 18.5°C13.2°C | 13.2°C | 104 | 10.5 |
| Waterloo | 20.6°C11.9°C | 11.9°C | 79 | 9.5 |
| Brantford | 21.6°C13.0°C | 13.0°C | 77 | 9.5 |
| Kamloops | 21.4°C10.7°C | 10.7°C | 35 | 7.0 |
| Lethbridge | 19.7°C8.3°C | 8.3°C | 37 | 5.8 |
| Delta | 19.6°C12.0°C | 12.0°C | 72 | 8.2 |
| Chilliwack | 20.5°C11.4°C | 11.4°C | 124 | 11.1 |
| Dartmouth | 19.3°C13.3°C | 13.3°C | 97 | 9.4 |
| Red Deer | 16.6°C6.3°C | 6.3°C | 41 | 8.0 |
| Niagara Falls | 21.2°C14.8°C | 14.8°C | 85 | 10.4 |
| Saint-Jean-sur-Richelieu | 20.3°C12.1°C | 12.1°C | 98 | 10.7 |
| Pickering | 20.3°C13.5°C | 13.5°C | 78 | 9.4 |
| Newmarket | 20.8°C12.2°C | 12.2°C | 73 | 9.1 |
| Nanaimo | 18.8°C12.5°C | 12.5°C | 86 | 9.3 |
| Airdrie | 16.6°C5.8°C | 5.8°C | 45 | 8.5 |
| Kanata | 20.4°C11.8°C | 11.8°C | 87 | 10.1 |
| North Vancouver | 18.8°C12.1°C | 12.1°C | 125 | 10.2 |
| Moncton | 19.4°C11.4°C | 11.4°C | 93 | 9.3 |
| Peterborough, Canada | 20.7°C12.6°C | 12.6°C | 85 | 9.6 |
| Repentigny | 20.3°C12.1°C | 12.1°C | 95 | 10.0 |
| Maple Ridge | 20.0°C10.9°C | 10.9°C | 173 | 11.7 |
| Prince George | 17.0°C7.3°C | 7.3°C | 54 | 9.8 |
| New Westminster | 19.3°C10.7°C | 10.7°C | 125 | 10.2 |
| Caledon | 19.9°C11.2°C | 11.2°C | 74 | 9.6 |
| Stoney Creek | 22.0°C14.1°C | 14.1°C | 77 | 9.3 |
| Pierrefonds-Roxboro | 20.4°C12.6°C | 12.6°C | 92 | 10.1 |
| Sarnia | 21.7°C14.7°C | 14.7°C | 73 | 9.1 |
| Sault Ste. Marie | 18.8°C12.0°C | 12.0°C | 108 | 12.1 |
| Saint John | 17.8°C11.8°C | 11.8°C | 108 | 10.0 |
| Sherwood Park | 16.0°C6.7°C | 6.7°C | 38 | 7.1 |
| Grande Prairie | 16.1°C6.6°C | 6.6°C | 40 | 7.7 |
A rain day is a local calendar day with at least 1 mm of precipitation.