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Weather in Yellowknife for September 2025

Your guide to Yellowknife weather in September - trends and predictions
  • In general, the average temperature in Yellowknife at the beginning of September is 15.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.4 °C by the end of September.

  • Yellowknife sees moderate rainfall in September, averaging 6 rainy days.

  • Snowfall in Yellowknife during September is quite rare, with fewer than 2 snowy days on average.

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Average dry days
23
Dry days
Average rainy days
6
Rainy days
Average snowy days
1
Snow days
Average temperatures
15°/7°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
64 %
Avg humidity

Yellowknife in September average weather

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Temperatures trend during September in Yellowknife

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
20° /11° 1.5 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
17° /10° 1.8 mm 4
3 Sept. Overcast
Overcast
11° /6° 0.1 mm 3
4 Sept. Overcast
Overcast
12° /5° 0 mm 3
5 Sept. Overcast
Overcast
14° /4° 0 mm 4
6 Sept. Overcast
Overcast
18° /8° 0 mm 5
7 Sept. Cloudy
Cloudy
18° /9° 0 mm 4
8 Sept. Overcast
Overcast
17° /9° 0 mm 4
9 Sept. Cloudy
Cloudy
15° /8° 5.4 mm 4
10 Sept. Sunny
Sunny
16° /8° 1.5 mm 4
11 Sept. Sunny
Sunny
17° /8° 0 mm 5
12 Sept. Overcast
Overcast
17° /10° 0.1 mm 4
13 Sept. Overcast
Overcast
18° /9° 0 mm 5
14 Sept. Cloudy
Cloudy
17° /9° 0.1 mm 4
15 Sept. Partly cloudy
Partly cloudy
17° /8° 0 mm 5
16 Sept. Partly cloudy
Partly cloudy
17° /10° 0.3 mm 5
17 Sept. Overcast
Overcast
16° /8° 0 mm 4
18 Sept. Overcast
Overcast
15° /8° 4.2 mm 4
19 Sept. Light drizzle
Light drizzle
11° /7° 0.6 mm 3
20 Sept. Patchy rain possible
Patchy rain possible
11° /6° 0 mm 3
21 Sept. Overcast
Overcast
13° /6° 0 mm 4
22 Sept. Partly cloudy
Partly cloudy
15° /7° 0 mm 5
23 Sept. Sunny
Sunny
15° /6° 0 mm 5
24 Sept. Light rain shower
Light rain shower
13° /6° 2.2 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
11° /5° 1 mm 3
26 Sept. Light rain
Light rain
9° /4° 2.8 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
6° /3° 0.1 mm 2
28 Sept. Overcast
Overcast
7° /2° 0 mm 2
29 Sept. Light snow
Light snow
7° /2° 0.2 mm 2
30 Sept. Overcast
Overcast
6° /0° 0.7 mm 2
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Important Notice
Our weather forecast for Yellowknife in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Yellowknife forecast closer to your planned date for the most up-to-date weather information.

Yellowknife in September - FAQ

What are the expected maximum and minimum temperatures in Yellowknife during September?
During September, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Yellowknife during September?
Expect minimal rainfall in Yellowknife during September, with a total of 17.5 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Yellowknife during September?
The average wind speed in Yellowknife during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Yellowknife

Explore the daily rainfall trends and prepare for Yellowknifes September weather 💧

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Location coordinates Where is Yellowknife?

Get accurate weather forecasts for Yellowknife, located at latitude 62.454 and longitude -114.372. Stay updated with localized weather information tailored for Yellowknife.

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