Castlegar (BC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castlegar.
Climate overview of Castlegar
Castlegar, British Columbia, Canada, sees big temperature differences between seasons, with August peaking at 25°C (77°F) and December dropping to -3°C (27°F).
The city has a wet climate, receiving around 1022 mm (40 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. November is the wettest month.
Castlegar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castlegar - and find the best time to visit.
Monthly Temperature in Castlegar
Visitors to Castlegar can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 25°C (77°F) in August to a very cold -3°C (27°F) in December.
Nighttime temperatures range from 10°C (50°F) in August to -10°C (14°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castlegar
Castlegar is known for its substantial rain/snowfall, with annual precipitation reaching 1022 mm (40 in). The seasons in Castlegar bring significant changes in precipitation. The wettest month, November, receives high snow/rainfall, with an average of 119 mm (4.7 in) of precipitation. This snow/rainfall is distributed across 16 snowy/rainy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 37 mm (1.5 in) over 9 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Castlegar Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Castlegar
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Fewest rainy days: July, August, September and October
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: December, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Castlegar
What is the best time to visit Castlegar?
July and August typically offer the most optimal weather in Castlegar. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Castlegar has warm summers and very cold winters.
What temperatures can I expect in Castlegar?
Daytime highs range from -3°C (27°F) in December to 25°C (77°F) in August. Nighttime lows range from -10°C (14°F) to 10°C (50°F). Temperatures vary considerably through the year.
How much rain does Castlegar get?
Annual rainfall is around 1022 mm (40 in). November is the wettest month with 119 mm (4.7 in), while August is the driest with 37 mm (1.5 in). In the coldest months, precipitation may fall as snow/rain.
Castlegar 3-Day Forecast
Castlegar on the map
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