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November Weather in Ontario, United States

Last updated: June 24, 2025

In November, the average temperature in Ontario, United States is a crisp 5°C (42°F), with a minimum dipping to -12°C (11°F) and a maximum reaching up to 22°C (71°F). Expect 110 mm (4.3 in) of precipitation spread over 16 days, contributing to a high average humidity of 89%. Get ready for a blend of chill and moisture this month!

November Temperature in Ontario

In November in Ontario, the average temperature is 5°C (42°F). Maximums can reach 22°C (71°F), while minimums can drop as low as -12°C (11°F). Be sure to pack layers to stay comfortable while exploring the varied weather conditions.

November Weather in Ontario: Daily Temperature Highs, Lows, and Averages

The chart illustrates November temperature patterns in Ontario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ontario, November typically has an average temperature of 5°C (42°F), with highs reaching up to 22°C (71°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec283035445364727266554134
Data source: Temperature data for Ontario generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

November Precipitation in Ontario

In Ontario in November, the precipitation amount is 110 mm (4.3 in) over a span of 16 days.

November Precipitation Trends in Ontario

The chart displays monthly precipitation patterns in Ontario, with values for each month alongside November’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how November’s conditions compare to those of other months. In Ontario, November typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec9494851241108014910383164110113
Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.
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November Humidity in Ontario

In Ontario in November humidity is 89%. With an average temperature of 5°C (42°F), this humidity feels like a chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while exploring.

November Average Humidity in Ontario

This chart illustrates the average monthly humidity levels in Ontario, with November’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In November, average humidity in Ontario is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for November generated using information from the Copernicus Climate Change Service.

November UV Index in Ontario

In Ontario in November, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Ontario, you can check the information here.

Maximum UV Index Levels in Ontario for November

The chart shows the monthly maximum UV Index (UVI) for Ontario in November, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In November, the maximum UV index in Ontario typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24681010997532
Data source: Ontario November UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How November Weather in Ontario Compares to Other Months

Weather in Ontario varies notably across the year, with each month offering distinct climate conditions. This page compares November’s weather to other months in Ontario, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ontario, showing how November’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)94 mm (3.7 inches)90%low
February Weather-1°C (30°F)94 mm (3.7 inches)90%moderate
March Weather2°C (35°F)85 mm (3.3 inches)87%high
April Weather6°C (44°F)124 mm (4.9 inches)88%very high
May Weather12°C (54°F)110 mm (4.3 inches)82%very high
June Weather18°C (64°F)80 mm (3.1 inches)79%very high
July Weather22°C (72°F)149 mm (5.9 inches)78%very high
August Weather22°C (72°F)103 mm (4.1 inches)76%very high
September Weather19°C (66°F)83 mm (3.3 inches)78%high
October Weather13°C (56°F)164 mm (6.5 inches)84%moderate
November Weather5°C (42°F)110 mm (4.3 inches)89%moderate
December Weather1°C (34°F)113 mm (4.4 inches)86%low

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