October Weather in Castlegar, Canada

Last updated: June 18, 2025

In Castlegar, Canada, the average temperature in October hovers around 4°C (40°F). While you might experience chills with minimums dipping to -11°C (12°F), there are also warmer days that can reach up to 22°C (72°F). Expect about 92 mm (3.6 in) of precipitation over 12 days, contributing to a notably high average humidity of 85%.

October Temperature in Castlegar

In October in Castlegar, the average temperature is 4°C (40°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -11°C (12°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates October temperature patterns in Castlegar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlegar, October typically has an average temperature of 4°C (40°F), with highs reaching up to 22°C (72°F) and lows dropping to around -11°C (12°F).

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

October Precipitation in Castlegar

In Castlegar in October, the precipitation amount is 92 mm (3.6 in) over the course of 12 days.

October Precipitation Trends in Castlegar

The chart displays monthly precipitation patterns in Castlegar, 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 Castlegar, October typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Castlegar

In Castlegar in October, humidity is 85%. With an average temperature of 4°C (40°F), this humidity feels like an icy blanket wrapping around you, making outdoor activities feel much colder and damp, which can be quite uncomfortable for traveling.

October Average Humidity in Castlegar

This chart illustrates the average monthly humidity levels in Castlegar, 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 Castlegar is approximately 85%, 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 Castlegar

In Castlegar in October, 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 Castlegar for better planning.

Maximum UV Index Levels in Castlegar for October

The chart shows the monthly maximum UV Index (UVI) for Castlegar 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 Castlegar typically reaches 4, which falls under the moderate exposure category.

Data source: Castlegar 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 Castlegar Compares to Other Months

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

This table compares monthly weather conditions in Castlegar, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	100 mm (4.0 inches)	90%	low
February Weather	-6°C (21°F)	88 mm (3.5 inches)	91%	moderate
March Weather	0°C (32°F)	101 mm (4.0 inches)	89%	moderate
April Weather	4°C (39°F)	92 mm (3.6 inches)	85%	high
May Weather	10°C (50°F)	78 mm (3.1 inches)	82%	very high
June Weather	14°C (58°F)	70 mm (2.8 inches)	81%	very high
July Weather	19°C (66°F)	32 mm (1.3 inches)	84%	very high
August Weather	18°C (65°F)	37 mm (1.5 inches)	75%	very high
September Weather	12°C (54°F)	69 mm (2.7 inches)	74%	high
October Weather	4°C (40°F)	92 mm (3.6 inches)	85%	moderate
November Weather	-1°C (31°F)	118 mm (4.6 inches)	88%	low
December Weather	-6°C (22°F)	114 mm (4.5 inches)	93%	low