Kootenay National Park

Kootenay National Park Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Kootenay National Park, Canada in September.

Planning a getaway to Kootenay National Park, Canada this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Kootenay National Park in September

Kootenay National Park, Canada is a region in Canada. September in Kootenay National Park generally has temperatures that range from cold to mild, with moderate precipitation.

Temperatures

During the day the temperature is cold in Castle Junction at 12°C (54°F) and mild in Radium Hot Springs at 16°C (61°F). As night falls, temperatures generally drop to 3°C (37°F) in Radium Hot Springs and -1°C (30°F) in Castle Junction.

To explore the conditions in Kootenay National Park, Canada in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Radium Hot Springs with an average of 61 mm (2.4 in) to moderate rainfall in Castle Junction with 68 mm (2.7 in).

Average sunshine

Sunshine is moderately available across various locations. In Radium Hot Springs, you can expect around 172 hours of sunlight in September, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Kootenay National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Kootenay National Park — and find the best time to visit. (based on Radium Hot Springs)

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.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Kootenay National Park

What is the weather like in September for some of the most popular destinations in Kootenay National Park, Canada?

Temperature range in Kootenay National Park (September)

Precipitation variation in Kootenay National Park (September)

Radium Hot Springs

In September Radium Hot Springs generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
21°C (70°F)
16°C (61°F)
7°C (45°F)
Min temperature
7°C (45°F)
3°C (37°F)
-4°C (25°F)
Monthly sun hours
215 hours
172 hours
128 hours
Monthly rainfall
66 mm (2.6 in)
61 mm (2.4 in)
58 mm (2.3 in)
Monthly rainy days
11 days
9 days
8 days
Weather conditions

Castle Junction

In September Castle Junction generally has low temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around -1°C (30°F) and moderate monthly snow/rainfall. So on average the conditions are unpleasant that month.

August
September
October
Max temperature
17°C (63°F)
12°C (54°F)
3°C (37°F)
Min temperature
3°C (37°F)
-1°C (30°F)
-9°C (16°F)
Monthly sun hours
215 hours
172 hours
128 hours
Monthly snow/rainfall
76 mm (3 in)
68 mm (2.7 in)
55 mm (2.2 in)
Monthly rainy days
13 days
11 days
10 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Kootenay National Park, in Canada.

Popular cities in September

Day & night temperatures, rainfall and average weather in Kootenay National Park in September.

City Weather Day temp Night temp Rainfall
Radium Hot Springs 16°C (61°F) 3°C (37°F) 61 mm (2.4 in)
Castle Junction 12°C (54°F) -1°C (30°F) 68 mm (2.7 in)

Kootenay National Park weather in September: frequently asked questions

What is the weather like in Kootenay National Park, Canada in September?

Kootenay National Park, Canada typically experiences tolerable weather in September, part of the season. Daytime highs in Radium Hot Springs average around 16°C (61°F), and temperatures drop to about 3°C (37°F) at night.

What is the average temperature in Kootenay National Park, Canada in September?

Daytime temperatures in Radium Hot Springs peak at roughly 16°C (61°F) in September, dropping to about 3°C (37°F) overnight.

Does Kootenay National Park, Canada get a lot of rain in September?

Rain is generally moderate to light in Kootenay National Park, Canada during September, with Radium Hot Springs averaging close to 61 mm (2.4 in).

Is September a Good Time to Visit Kootenay National Park, Canada?

In our opinion, September is a good time to visit Kootenay National Park, Canada with overall tolerable weather in Radium Hot Springs. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in July and August offering mostly perfect weather in Radium Hot Springs. The weather in January, February, March, April, October, November and December, on the other hand, tends to be poor.

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.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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