October Weather in Guelph, Canada

Last updated: June 18, 2025

In October, the average temperature in Guelph, Canada hovers around 10°C (50°F). However, be prepared for a temperature range that can dip to a chilly -3°C (27°F) or soar up to a warm 28°C (83°F). This month also brings 101 mm (4.0 in) of precipitation over about 14 days, with humidity levels averaging a high 84%.

October Temperature in Guelph

In October in Guelph, the average temperature is 10°C (50°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -3°C (27°F). This diverse temperature range makes Guelph an ideal destination for travelers seeking a mix of seasonal experiences.

October Weather in Guelph: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Guelph, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guelph, October typically has an average temperature of 10°C (50°F), with highs reaching up to 28°C (83°F) and lows dropping to around -3°C (27°F).

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

October Precipitation in Guelph

In Guelph in October, the precipitation amount is 101 mm (4.0 in) over the course of 14 days.

October Precipitation Trends in Guelph

The chart displays monthly precipitation patterns in Guelph, 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 Guelph, October typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 14 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Guelph

In Guelph in October, humidity is 84%. With an average temperature of 10°C (50°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and prompting travelers to seek refuge in cozy, warm cafes or indoor attractions.

October Average Humidity in Guelph

This chart illustrates the average monthly humidity levels in Guelph, 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 Guelph is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Guelph

In Guelph 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 Guelph.

Maximum UV Index Levels in Guelph for October

The chart shows the monthly maximum UV Index (UVI) for Guelph 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 Guelph typically reaches 5, which falls under the moderate exposure category.

Data source: Guelph 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 Guelph Compares to Other Months

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

This table compares monthly weather conditions in Guelph, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	70 mm (2.8 inches)	90%	low
February Weather	-5°C (24°F)	75 mm (2.9 inches)	90%	moderate
March Weather	0°C (32°F)	65 mm (2.5 inches)	87%	moderate
April Weather	6°C (42°F)	103 mm (4.1 inches)	87%	very high
May Weather	13°C (56°F)	97 mm (3.8 inches)	82%	very high
June Weather	19°C (66°F)	105 mm (4.1 inches)	81%	very high
July Weather	22°C (71°F)	77 mm (3.0 inches)	79%	very high
August Weather	20°C (69°F)	95 mm (3.7 inches)	80%	very high
September Weather	17°C (62°F)	71 mm (2.8 inches)	81%	high
October Weather	10°C (50°F)	101 mm (4.0 inches)	84%	moderate
November Weather	2°C (36°F)	78 mm (3.1 inches)	88%	moderate
December Weather	-2°C (29°F)	72 mm (2.8 inches)	87%	low