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Ontario
Weather averages
ClimateForecastAprilMay >>

Climate in Ontario (Oregon), United States of America

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 Ontario (OR)

Tue   Apr 30
15°C | -2°C
SW 18 km/h
0.2 mm
partly cloudy and small chance of slight rain

partly cloudy and small chance of slight rain

hourly forecast
Wed   May 01
16°C | 3°C
W 14 km/h
almost clear and no rain

almost clear and no rain

hourly forecast
Thu   May 02
15°C | 2°C
SE 7 km/h
0.3 mm
broken clouds and chance of slight rain

broken clouds and chance of slight rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Ontario in the United States of America

Other facts from our historical weather data:

  • When is summer in Ontario?
    The hottest season / summer takes place in June, July, August and September.
  • Which is the warmest month in Ontario?
    July has an average maximum temperature of 35°C and is the warmest month of the year.
  • Which is the coldest month in Ontario?
    The coldest month is January with an average maximum temperature of 2°C.
  • Which is the wettest month in Ontario?
    December tops the wettest month list with 45 mm of rainfall.
  • Which is the driest month in Ontario?
    July is the driest month with 4 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.

     

     

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