Yellowknife Weather in September

September in Yellowknife sees daytime temperatures around 12°C (54°F) and lows of 5°C (41°F) at night. Pack a rain jacket because some rainfall is likely.

Rainfall in Yellowknife in September

Analyzing past climate data, one can expect approximately 10 days of rain, averaging 48 mm (1.9 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Yellowknife in September

September in Yellowknife brings moderate temperatures, with highs of 12°C (54°F) and nights around 5°C (41°F). The difference between afternoon and evening temperatures is usually noticeable. With overnight lows of 5°C (41°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Yellowknife in September

The area enjoys a balanced 157 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• July
• August

• September
• October
• November
• December

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

Yellowknife Temperature in September

Min Temperature 5°C (41°F)  

Max Temperature 12°C (54°F)  

Chance of Rain 32%  

Precipitation 48 mm (1.9 in)  

Rainy days 10 days  

Humidity 64%  

Sunshine 157 hours  

Percentage Sunshine 40%  

What to Wear in Yellowknife in September

The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Yellowknife in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

5/10

Outdoor sports

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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

More climate data for Yellowknife

Temperature Rainfall Sunshine Humidity

See the full Yellowknife climate overview or explore weather in Canada.