Temperature in Kootenay National Park in September

Daytime highs, nighttime lows and the warmest cities in Kootenay National Park, Canada this September.

Kootenay National Park, Canada, a region in Canada, experiences maximum daytime temperatures in September ranging from 12°C (54°F) in Castle Junction to 16°C (61°F) in Radium Hot Springs. Nighttime temperatures generally drop to 3°C (37°F) in Radium Hot Springs and -1°C (30°F) in Castle Junction.

What is the temperature of the different cities in Kootenay National Park, Canada in September?

Find the average daytime temperatures in September for the most popular destinations in Kootenay National Park on the map below. Click on a destination dot for more detailed information.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Kootenay National Park, check out our Kootenay National Park's climate page.

See also: Kootenay National Park weather by month.

Best Places to Visit in Kootenay National Park in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Kootenay National Park.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Kootenay National Park

Kootenay National Park temperatures in September: frequently asked questions

How hot does it get in Kootenay National Park, Canada in September?

Daytime temperatures in Radium Hot Springs typically peak at 16°C (61°F) in September, putting it in the moderate range.

How cold does it get at night in Kootenay National Park, Canada in September?

After dark, Radium Hot Springs cools to about 3°C (37°F) on an average September night.

What is the warmest city in September in Kootenay National Park, Canada?

From a thorough analysis of our records, Radium Hot Springs clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 16°C (61°F), and evenings that remain near 3°C (37°F).

What is the coldest city in September in Kootenay National Park, Canada?

When looking through our records, we find that Castle Junction stands out as the coolest city in Kootenay National Park, Canada for the month of September. Daytime highs average 12°C (54°F) and it cools down to about -1°C (30°F) at night.

How much sun does Kootenay National Park, Canada get in September?

Most cities enjoy a balanced amount of sunshine, with around 172 hours of sunlight anticipated in Radium Hot Springs. This ensures the days are neither too dim nor excessively sunny.

Interested in more climate information?

We have much more information about the climate in Kootenay National Park.

Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

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