CanadaCountries Canada Ontario Cornwall
CanadaCanada Ontario Cornwall
Cornwall
Weather averages
ClimateForecastAprilMay >>

Climate in Cornwall (Ontario), Canada

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Weather Forecasts for Cornwall

Mon   Apr 29
13°C | 5°C
NE 14 km/h
0.3 mm
overcast and chance of slight rain

overcast and chance of slight rain

hourly forecast
Tue   Apr 30
10°C | 6°C
NE 22 km/h
24 mm
overcast and heavy rain

overcast and heavy rain

hourly forecast
Wed   May 01
15°C | 4°C
NE 7 km/h
overcast and no rain

overcast and no rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Cornwall in Canada

During the months of May, June, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is winter in Cornwall?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Cornwall?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Cornwall?
    The coldest month is January with an average maximum temperature of -4°C.
  • Which is the wettest month in Cornwall?
    October tops the wettest month list with 115 mm of rainfall.
  • Which is the driest month in Cornwall?
    March is the driest month with 57 mm of precipitation.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     

    Travel Inspiration