Richmond Hill weather in May
Long-run climate averages for Richmond Hill, Ontario in May, plus what the forecast models say for the days ahead.
In May, Richmond Hill averages 20°C by day and 8°C at night. The wettest month is usually April.
May in Richmond Hill averages a daytime high of 20°C and an overnight low of 8°C, which reads as mild for this part of the world. Across the whole year Richmond Hill sees roughly 1005 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 Richmond Hill forecast with every model compared and how much they currently agree.
Richmond Hill weather by month
what to expect in Richmond Hill through the yearHere is Richmond Hill'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 Richmond Hill by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Richmond Hill, scoring 89/100 on our CheckWeather Score, ahead of the American at 73. See the full CA accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Richmond Hill in May?
Is May a good time to visit Richmond Hill?
Does it rain a lot in Richmond Hill in May?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .