Castlegar (BC) Temperature by Month
Castlegar in British Columbia, Canada sees significant seasonal temperature differences, with daytime highs between -3°C (27°F) in December and 25°C (77°F) in August, averaging 11°C (52°F) annually. Explore the full monthly breakdown below.
Castlegar Monthly Temperatures
The weather in Castlegar experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 10°C (50°F) in August to -10°C (14°F) in December.
The chart below illustrates the average maximum day and minimum night temperatures in Castlegar by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Castlegar vs Canada
The map below shows the annual temperature across Canada. You can also select individual months if you want to compare a specific time of year.
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Castlegar vs World: Temperature Compared
Castlegar's average annual maximum temperature is 11°C (52°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Castlegar's weather — including monthly rainfall, sunshine hours, and humidity — visit our Castlegar climate page.
