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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

    Temperatures

  • In general, the average temperature in Yellowknife at the beginning of September is 15.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 9.7 °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

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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
Patchy rain possible
16°
3
Overcast
13°
4
Overcast
12°
5
Overcast
14°
6
Partly cloudy
18°
7
Cloudy
17°
8
Overcast
16°
9
Cloudy
17°
10
Sunny
15°
11
Sunny
18°
12
Overcast
19°
13
Overcast
19°
14
Patchy rain possible
17°
15
Partly cloudy
16°
16
Partly cloudy
16°
17
Overcast
17°
18
Overcast
16°
19
Light drizzle
13°
20
Overcast
13°
21
Overcast
15°
22
Partly cloudy
13°
23
Sunny
14°
24
Light rain shower
12°
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 UV More
1 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 1 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 1.2 mm 4
3 Sept. Overcast
Overcast
 13° /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. Partly cloudy
Partly cloudy
 18° /8° 0 mm 5
7 Sept. Cloudy
Cloudy
 17° /8° 0 mm 4
8 Sept. Overcast
Overcast
 16° /8° 0 mm 4
9 Sept. Cloudy
Cloudy
 17° /8° 4.1 mm 4
10 Sept. Sunny
Sunny
 15° /8° 1.8 mm 4
11 Sept. Sunny
Sunny
 18° /8° 0 mm 5
12 Sept. Overcast
Overcast
 19° /11° 0.1 mm 5
13 Sept. Overcast
Overcast
 19° /10° 0 mm 5
14 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 0.1 mm 4
15 Sept. Partly cloudy
Partly cloudy
 16° /8° 1.3 mm 4
16 Sept. Partly cloudy
Partly cloudy
 16° /9° 0.2 mm 4
17 Sept. Overcast
Overcast
 17° /8° 0 mm 4
18 Sept. Overcast
Overcast
 16° /10° 2.8 mm 4
19 Sept. Light drizzle
Light drizzle
 13° /7° 0.4 mm 4
20 Sept. Overcast
Overcast
 13° /7° 0 mm 3
21 Sept. Overcast
Overcast
 15° /8° 0 mm 4
22 Sept. Partly cloudy
Partly cloudy
 13° /6° 0 mm 4
23 Sept. Sunny
Sunny
 14° /7° 0.3 mm 4
24 Sept. Light rain shower
Light rain shower
 12° /6° 1.5 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 11° /5° 0.6 mm 3
26 Sept. Light rain
Light rain
 10° /4° 1.9 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
 9° /3° 0.1 mm 3
28 Sept. Overcast
Overcast
 9° /3° 0 mm 3
29 Sept. Light snow
Light snow
 9° /2° 0.2 mm 2
30 Sept. Overcast
Overcast
 8° /2° 0.5 mm 2
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.

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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