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October Weather in Greater Sudbury, Canada

Last updated: June 18, 2025

In Greater Sudbury, Canada, the average temperature in October hovers around 7°C (45°F), with a minimum chill of -9°C (15°F) and an occasional maximum warmth of 24°C (75°F). Expect 124 mm (4.9 in) of precipitation spread across 13 days, contributing to an average humidity of 85%. Be prepared for a cool, damp month!

October Temperature in Greater Sudbury

In October in Greater Sudbury, the average temperature is 7°C (45°F), with maximums that can reach 24°C (75°F) and minimums that can drop as low as -9°C (15°F). This variation in temperature makes it essential for travelers to pack layers to prepare for both warm days and chilly nights.

October Weather in Greater Sudbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Greater Sudbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greater Sudbury, October typically has an average temperature of 7°C (45°F), with highs reaching up to 24°C (75°F) and lows dropping to around -9°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec121424375262686557452918
Data source: Temperature data for Greater Sudbury 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.

October Precipitation in Greater Sudbury

In Greater Sudbury in October, the total precipitation amount is 124 mm (4.9 in) over a span of 13 days.

October Precipitation Trends in Greater Sudbury

The chart displays monthly precipitation patterns in Greater Sudbury, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Greater Sudbury, October typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec4560518382969496911248165
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Greater Sudbury

In Greater Sudbury in October, humidity is 85%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

October Average Humidity in Greater Sudbury

This chart illustrates the average monthly humidity levels in Greater Sudbury, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Greater Sudbury is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%89%87%74%70%66%71%76%85%89%93%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Greater Sudbury

In Greater Sudbury in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Greater Sudbury.

Maximum UV Index Levels in Greater Sudbury for October

The chart shows the monthly maximum UV Index (UVI) for Greater Sudbury in October, 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 October, the maximum UV index in Greater Sudbury typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Greater Sudbury October 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 October Weather in Greater Sudbury Compares to Other Months

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

This table compares monthly weather conditions in Greater Sudbury, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-11°C (13°F)45 mm (1.8 inches)96%low
February Weather-10°C (14°F)60 mm (2.4 inches)95%moderate
March Weather-5°C (24°F)51 mm (2.0 inches)89%moderate
April Weather3°C (38°F)83 mm (3.3 inches)87%high
May Weather11°C (53°F)82 mm (3.2 inches)73%very high
June Weather17°C (62°F)96 mm (3.8 inches)69%very high
July Weather20°C (68°F)94 mm (3.7 inches)66%very high
August Weather18°C (65°F)96 mm (3.8 inches)71%very high
September Weather14°C (57°F)90 mm (3.6 inches)76%high
October Weather7°C (45°F)124 mm (4.9 inches)85%moderate
November Weather-2°C (29°F)81 mm (3.2 inches)89%moderate
December Weather-8°C (18°F)65 mm (2.5 inches)93%low

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