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Weather in September in Northwest Territories

Planning a getaway to Northwest Territories 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 is the weather like in Northwest Territories in September?

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

Temperatures

The average maximum daytime temperatures vary from cold in Inuvik at 9°C to mild in Fort Simpson at 15°C. Nighttime temperatures generally drop to 4°C in Fort Simpson and 2°C in Inuvik.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Inuvik with an average of 40 mm to moderate rainfall in Thaidene Nëné National Park Reserve with 62 mm.

Average sunshine

Most cities enjoy a balanced amount of sunshine, with around 107 hours of sunlight anticipated in Inuvik. This ensures the days are neither too dim nor excessively sunny.

For a closer look at September's conditions in Northwest Territories, see the map below. For a more detailed look at Northwest Territories's yearly weather, check out our Northwest Territories climate page.

Where to go in Northwest Territories in September

Find more information for the most popular destinations in the Northwest Territories on the map below. Click on a destination dot for more detailes.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 5 most popular destinations in Northwest Territories?

Inuvik

In September Inuvik generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 2°C and moderate monthly rainfall. So on average the conditions are poor that month.

Inuvik
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
16°C 
7°C 
219 hours 
48 mm 
12 days 
9°C 
2°C 
107 hours 
40 mm 
11 days 
poor 
October   >> October
>>  
-3°C 
-9°C 
51 hours 
28 mm 
15 days 
poor 
Climate in Inuvik

Yellowknife

In September Yellowknife generally has moderate temperatures with maximum daytime temperatures around 12°C, minimum nighttime temperatures around 5°C and moderate monthly rainfall. So on average the conditions are unpleasant that month.

Yellowknife
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
11°C 
276 hours 
51 mm 
10 days 
12°C 
5°C 
157 hours 
48 mm 
10 days 
October   >> October
>>  
3°C 
-3°C 
65 hours 
32 mm 
13 days 
poor 
Climate in Yellowknife

Hay River

In September Hay River generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 6°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Hay River
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
21°C 
12°C 
68 mm 
10 days 
14°C 
6°C 
48 mm 
10 days 
October   >> October
>>  
5°C 
-1°C 
35 mm 
12 days 
poor 
Climate in Hay River

Fort Simpson

In September Fort Simpson generally has moderate temperatures with maximum daytime temperatures around 15°C, minimum nighttime temperatures around 4°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Fort Simpson
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
22°C 
10°C 
265 hours 
62 mm 
11 days 
15°C 
4°C 
165 hours 
41 mm 
9 days 
October   >> October
>>  
3°C 
-4°C 
78 hours 
32 mm 
12 days 
poor 
Climate in Fort Simpson

Thaidene Nëné National Park Reserve

In September Thaidene Nëné National Park Reserve generally has low temperatures with maximum daytime temperatures around 12°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are unpleasant that month.

Thaidene Nëné National Park Reserve
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
16°C 
12°C 
61 mm 
12 days 
12°C 
7°C 
62 mm 
11 days 
October   >> October
>>  
4°C 
-0°C 
51 mm 
13 days 
poor 
Climate in Thaidene Nëné National Park Reserve

Is your destination not in the list? Have a look at other destinations in Northwest Territories, in Canada.

Is September the best time to visit Northwest Territories?

In our view, September might not be the best time to travel to Northwest Territories with often poor weather in Inuvik.

Generally speaking, the best visiting conditions can be found in July offering mostly perfect weather in Inuvik. On the other hand, the months of January, February, March, April, September, October, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Northwest Territories. Interested in the weather conditions in a specific month? Select the month below.

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  • 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.