Vaughan weather in September
Long-run climate averages for Vaughan, Ontario in September, plus what the forecast models say for the days ahead.
In September, Vaughan averages 21°C by day and 11°C at night. The wettest month is usually August.
September in Vaughan averages a daytime high of 21°C and an overnight low of 11°C, which reads as mild for this part of the world. Across the whole year Vaughan sees roughly 852 mm of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Vaughan forecast with every model compared and how much they currently agree.
Vaughan weather by month
what to expect in Vaughan through the year, 1991-2020 averagesHere is Vaughan's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Vaughan by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Vaughan, scoring 92/100 on our CheckWeather Score, ahead of the Env. Canada at 89. See the full CA accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Vaughan in September?
Is September a good time to visit Vaughan?
Does it rain a lot in Vaughan in September?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .