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Yellowknife
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Weather in Yellowknife for September 2026

Your guide to Yellowknife weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Yellowknife during September is quite rare, with fewer than 2 snowy days on average.
    According to Yellowknife snow forecast for September 2026, 1 snowy day is expected in the next 2 weeks at Thursday, 24 September.

    • Temperatures

  • Until now, September 2026 in Yellowknife is slightly cooler than the historical average by 0.7 °C.

  • The forecast for the next days in Yellowknife predicts a temperature of 8.1 °C, which is cooler than the historical average.

  • In general, the average temperature in Yellowknife at the beginning of September is 15.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.6 °C by the end of September.

    • Rain 🌧️

  • Yellowknife experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 18.2 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/7°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Yellowknife Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
18°
2
Overcast
17°
3
Overcast
15°
4
Overcast
12°
5
Overcast
13°
6
Overcast
17°
7
Cloudy
17°
8
Overcast
16°
9
Cloudy
17°
10
Sunny
15°
11
Overcast
8°
12
Overcast
11°
13
Overcast
10°
14
Overcast
9°
15
Overcast
8°
16
Overcast
12°
17
Overcast
11°
18
Overcast
9°
19
Overcast
10°
20
Light rain shower
9°
21
Overcast
3°
22
Sunny
4°
23
Overcast
5°
24
Patchy rain possible
4°
25
Patchy rain possible
11°
26
Light rain
10°
27
Patchy rain possible
9°
28
Overcast
9°
29
Light snow
9°
30
Overcast
8°

Temperatures trend during September in Yellowknife

See the weather trend as well as the moving average line

September weather in Yellowknife day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.8 mm 0 cm
2 Sept. Overcast
Overcast
 17° /9° 1 mm 0 cm
3 Sept. Overcast
Overcast
 15° /7° 0.2 mm 0 cm
4 Sept. Overcast
Overcast
 12° /4° 0 mm 0 cm
5 Sept. Overcast
Overcast
 13° /5° 0.5 mm 0 cm
6 Sept. Overcast
Overcast
 17° /7° 0.1 mm 0 cm
7 Sept. Cloudy
Cloudy
 17° /8° 0 mm 0 cm
8 Sept. Overcast
Overcast
 16° /7° 0.2 mm 0 cm
9 Sept. Cloudy
Cloudy
 17° /8° 6.5 mm 0 cm
10 Sept. Sunny
Sunny
 15° /8° 1.5 mm 0 cm
11 Sept. Overcast
Overcast
 8° /6° 0.2 mm 0 cm
12 Sept. Overcast
Overcast
 11° /5° 0.7 mm 0 cm
13 Sept. Overcast
Overcast
 10° /8° 0 mm 0 cm
14 Sept. Overcast
Overcast
 9° /6° 0.1 mm 0 cm
15 Sept. Overcast
Overcast
 8° /2° 0 mm 0 cm
16 Sept. Overcast
Overcast
 12° /8° 0 mm 0 cm
17 Sept. Overcast
Overcast
 11° /6° 0 mm 0 cm
18 Sept. Overcast
Overcast
 9° /5° 0 mm 0 cm
19 Sept. Overcast
Overcast
 10° /5° 0.2 mm 0 cm
20 Sept. Light rain shower
Light rain shower
 9° /3° 3.4 mm 0 cm
21 Sept. Overcast
Overcast
 3° /-1° 0.1 mm 0 cm
22 Sept. Sunny
Sunny
 4° /-1° 0 mm 0 cm
23 Sept. Overcast
Overcast
 5° /1° 0.9 mm 0 cm
24 Sept. Patchy rain possible
Patchy rain possible
 4° /0° 3.4 mm 1.9 cm
25 Sept. Patchy rain possible
Patchy rain possible
 11° /5° 0.6 mm 0 cm
26 Sept. Light rain
Light rain
 10° /4° 1.9 mm 0 cm
27 Sept. Patchy rain possible
Patchy rain possible
 9° /3° 0.1 mm 0 cm
28 Sept. Overcast
Overcast
 9° /3° 0 mm 0 cm
29 Sept. Light snow
Light snow
 9° /2° 0.2 mm 0 cm
30 Sept. Overcast
Overcast
 8° /2° 0.5 mm 0 cm
Next
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.
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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 14° 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 18.2 mm over approximately 8 days. This minimal precipitation is unlikely to significantly impact plans.

Will it snow in Yellowknife in September 2026?
Yellowknife typically sees 0 cm of snowfall during September.

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.

Yellowknife snow forecast September 2026

Track daily snowfall levels and discover Yellowknife’s snowy potential this September ❄️

September rainfall patterns in Yellowknife

Explore the daily rainfall trends and prepare for Yellowknifes September weather 💧
Typically, Yellowknife has 8 rainy days in September with a total of 18.2 mm of rainfall.

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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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