November Weather in Ontario, United States

Last updated: June 24, 2025

In November, the average temperature in Ontario, United States is a brisk 6°C (43°F), with potential extremes ranging from a chilly -6°C (22°F) to a warm 25°C (78°F). Visitors can expect about 27 mm (1.1 in) of precipitation over 5 days, along with a high average humidity of 84%, creating a crisp and refreshing atmosphere.

November Temperature in Ontario

In November in Ontario, the average temperature is 6°C (43°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -6°C (22°F). Travelers should be prepared for a wide range of temperatures, so layering clothing is essential for comfort during their visit.

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 6°C (43°F), with highs reaching up to 25°C (78°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Ontario generated using information from the Copernicus Climate Change Service.

November Precipitation in Ontario

In Ontario in November, the precipitation amount is 27 mm (1.1 in) over a period of 5 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 27 mm (1.1 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for November generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

November Humidity in Ontario

In Ontario in November, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.

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 84%, offering insight into how humid the weather typically is during this month.

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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Ontario for better planning.

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 4, which falls under the moderate exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	42 mm (1.7 inches)	88%	moderate
February Weather	2°C (36°F)	46 mm (1.8 inches)	89%	moderate
March Weather	8°C (47°F)	32 mm (1.3 inches)	85%	high
April Weather	12°C (55°F)	23 mm (0.9 inches)	79%	high
May Weather	17°C (64°F)	28 mm (1.1 inches)	71%	very high
June Weather	23°C (73°F)	16 mm (0.6 inches)	71%	extreme
July Weather	29°C (84°F)	1 mm (0.0 inches)	66%	very high
August Weather	27°C (82°F)	5 mm (0.2 inches)	50%	very high
September Weather	21°C (70°F)	10 mm (0.4 inches)	48%	very high
October Weather	12°C (55°F)	16 mm (0.6 inches)	65%	moderate
November Weather	6°C (43°F)	27 mm (1.1 inches)	84%	moderate
December Weather	1°C (35°F)	29 mm (1.1 inches)	87%	low