April Weather in Castlegar, Canada

Last updated: June 18, 2025

In April, the average temperature in Castlegar, Canada hovers around 4°C (39°F). Expect a chilly range, with minimums dropping to -9°C (16°F) and maximums reaching up to 20°C (69°F). During this month, precipitation levels can accumulate to 92 mm (3.6 in) across approximately 15 days, contributing to an average humidity of 85%. Stay prepared for a mix of cool temperatures and frequent showers!

April Temperature in Castlegar

In April in Castlegar, the average temperature is 4°C (39°F). Maximums can reach 20°C (69°F), while minimums can drop as low as -9°C (16°F). Be prepared for a mix of cool and mild weather, making it essential to pack layers when traveling.

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

The chart illustrates April 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, April typically has an average temperature of 4°C (39°F), with highs reaching up to 20°C (69°F) and lows dropping to around -9°C (16°F).

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

April Precipitation in Castlegar

In Castlegar in April, the precipitation amount is 92 mm (3.6 in) distributed over 15 days.

April Precipitation Trends in Castlegar

The chart displays monthly precipitation patterns in Castlegar, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Castlegar, April typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 15 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Castlegar

In Castlegar in April, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.

April Average Humidity in Castlegar

This chart illustrates the average monthly humidity levels in Castlegar, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Castlegar is approximately 85%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Castlegar

In Castlegar in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Castlegar.

Maximum UV Index Levels in Castlegar for April

The chart shows the monthly maximum UV Index (UVI) for Castlegar in April, 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 April, the maximum UV index in Castlegar typically reaches 7, which falls under the high exposure category.

Data source: Castlegar April 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 April 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 April’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 April’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