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Northwest Territories (Yellowknife)
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Canada weather

Weather in Northwest Territories for September 2026

Your guide to Northwest Territories weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Northwest Territories during September is quite rare, with fewer than 2 snowy days on average.
    According to Northwest Territories snow forecast for September 2026, 3 snowy days are expected until the end of the month. The closest date with snow is Sunday, 27 September.

    • Temperatures

  • Until now, September 2026 in Northwest Territories is cooler than usual, with temperatures averaging 12.3 °C, this is 2.5 °C below the typical seasonal average.

  • The forecast for the upcoming days in Northwest Territories predicts a temperature of 3.1 °C, which is slightly above the historical average.

  • In general, the average temperature in Northwest Territories at the beginning of September is 15.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 5.6 °C by the end of September.

    • Rain 🌧️

  • Northwest Territories 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

Northwest Territories 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
Sunny
15°
12
Patchy rain possible
17°
13
Overcast
17°
14
Patchy rain possible
15°
15
Partly cloudy
14°
16
Partly cloudy
14°
17
Overcast
15°
18
Overcast
15°
19
Light drizzle
13°
20
Overcast
13°
21
Overcast
15°
22
Partly cloudy
14°
23
Sunny
14°
24
Patchy rain possible
12°
25
Patchy rain possible
11°
26
Patchy rain possible
9°
27
Overcast
2°
28
Sunny
2°
29
Overcast
0°
30
Moderate or heavy snow showers
3°

Temperatures trend during September in Northwest Territories

See the weather trend as well as the moving average line

September weather in Northwest Territories 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. Sunny
Sunny
 15° /7° 0.1 mm 0 cm
12 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 0.7 mm 0 cm
13 Sept. Overcast
Overcast
 17° /9° 0.4 mm 0 cm
14 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 0.1 mm 0 cm
15 Sept. Partly cloudy
Partly cloudy
 14° /7° 1.2 mm 0 cm
16 Sept. Partly cloudy
Partly cloudy
 14° /6° 0.2 mm 0 cm
17 Sept. Overcast
Overcast
 15° /7° 1.8 mm 0 cm
18 Sept. Overcast
Overcast
 15° /8° 2.2 mm 0 cm
19 Sept. Light drizzle
Light drizzle
 13° /7° 0.3 mm 0 cm
20 Sept. Overcast
Overcast
 13° /7° 0 mm 0 cm
21 Sept. Overcast
Overcast
 15° /8° 0 mm 0 cm
22 Sept. Partly cloudy
Partly cloudy
 14° /6° 0 mm 0 cm
23 Sept. Sunny
Sunny
 14° /7° 0.6 mm 0 cm
24 Sept. Patchy rain possible
Patchy rain possible
 12° /6° 1.7 mm 0 cm
25 Sept. Patchy rain possible
Patchy rain possible
 11° /4° 0.5 mm 0 cm
26 Sept. Patchy rain possible
Patchy rain possible
 9° /3° 2.3 mm 0 cm
27 Sept. Overcast
Overcast
 2° /-1° 1.8 mm 0.5 cm
28 Sept. Sunny
Sunny
 2° /-3° 0 mm 0 cm
29 Sept. Overcast
Overcast
 0° /-3° 18.8 mm 13.1 cm
30 Sept. Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /-3° 8.8 mm 6.4 cm
Next
Important Notice
Our weather forecast for Northwest Territories 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 Northwest Territories forecast closer to your planned date for the most up-to-date weather information.
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Northwest Territories in September - FAQ

What are the expected maximum and minimum temperatures in Northwest Territories 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 Northwest Territories during September?
Expect minimal rainfall in Northwest Territories 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 Northwest Territories in September 2026?
Northwest Territories typically sees 0 cm of snowfall during September.

What are the typical wind conditions in Northwest Territories during September?
The average wind speed in Northwest Territories during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.

Northwest Territories snow forecast September 2026

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

September rainfall patterns in Northwest Territories

Explore the daily rainfall trends and prepare for Northwest Territoriess September weather 💧
Typically, Northwest Territories has 8 rainy days in September with a total of 18.2 mm of rainfall.
Provinces in Northwest Territories
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North Slave Region
Top locations in Northwest Territories
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Yellowknife
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Location coordinates Where is Northwest Territories?

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

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