North Slave Region (Yellowknife)
September
Weather in North Slave Region for September 2025
Your guide to North Slave Region weather in September - trends and predictions
In general, the average temperature in North Slave Region 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.
North Slave Region sees moderate rainfall in September, averaging 6 rainy days.
Snowfall in North Slave Region during September is quite rare, with fewer than 2 snowy days on average.
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23
Dry days
6
Rainy days
1
Snow days
15°/7°
Temperatures
23 km/h
Avg max wind
64 %
Avg humidity
North Slave Region in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2 17° | 3  11° | 4 12° | 5 14° | 6 18° | 7  18° |
| 8 17° | 9 15° | 10  16° | 11 17° | 12 17° | 13 18° | 14 17° |
| 15  17° | 16 17° | 17 16° | 18 15° | 19  11° | 20 11° | 21 13° |
| 22 15° | 23 15° | 24 13° | 25 11° | 26 9° | 27 6° | 28 7° |
| 29  7° | 30 6° |
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Temperatures trend during September in North Slave Region
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 | 20° /11° | 1.5 mm | 5 | |
| 2 Sept. | Patchy rain possible | 17° /10° | 1.8 mm | 4 | |
| 3 Sept. | Overcast | 11° /6° | 0.1 mm | 3 | |
| 4 Sept. | Overcast | 12° /5° | 0 mm | 3 | |
| 5 Sept. | Overcast | 14° /4° | 0 mm | 4 | |
| 6 Sept. | Overcast | 18° /8° | 0 mm | 5 | |
| 7 Sept. | Cloudy | 18° /9° | 0 mm | 4 | |
| 8 Sept. | Overcast | 17° /9° | 0 mm | 4 | |
| 9 Sept. | Cloudy | 15° /8° | 5.4 mm | 4 | |
| 10 Sept. | Sunny | 16° /8° | 1.5 mm | 4 | |
| 11 Sept. | Sunny | 17° /8° | 0 mm | 5 | |
| 12 Sept. | Overcast | 17° /10° | 0.1 mm | 4 | |
| 13 Sept. | Overcast | 18° /9° | 0 mm | 5 | |
| 14 Sept. | Cloudy | 17° /9° | 0.1 mm | 4 | |
| 15 Sept. | Partly cloudy | 17° /8° | 0 mm | 5 | |
| 16 Sept. | Partly cloudy | 17° /10° | 0.3 mm | 5 | |
| 17 Sept. | Overcast | 16° /8° | 0 mm | 4 | |
| 18 Sept. | Overcast | 15° /8° | 4.2 mm | 4 | |
| 19 Sept. | Light drizzle | 11° /7° | 0.6 mm | 3 | |
| 20 Sept. | Patchy rain possible | 11° /6° | 0 mm | 3 | |
| 21 Sept. | Overcast | 13° /6° | 0 mm | 4 | |
| 22 Sept. | Partly cloudy | 15° /7° | 0 mm | 5 | |
| 23 Sept. | Sunny | 15° /6° | 0 mm | 5 | |
| 24 Sept. | Light rain shower | 13° /6° | 2.2 mm | 3 | |
| 25 Sept. | Patchy rain possible | 11° /5° | 1 mm | 3 | |
| 26 Sept. | Light rain | 9° /4° | 2.8 mm | 2 | |
| 27 Sept. | Patchy rain possible | 6° /3° | 0.1 mm | 2 | |
| 28 Sept. | Overcast | 7° /2° | 0 mm | 2 | |
| 29 Sept. | Light snow | 7° /2° | 0.2 mm | 2 | |
| 30 Sept. | Overcast | 6° /0° | 0.7 mm | 2 | |
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Important Notice
Our weather forecast for North Slave Region 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 North Slave Region forecast closer to your planned date for the most up-to-date weather information.
North Slave Region in September - FAQ
What are the expected maximum and minimum temperatures in North Slave Region 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 North Slave Region during September?
Expect minimal rainfall in North Slave Region 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 North Slave Region during September?
The average wind speed in North Slave Region during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in North Slave Region
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Where is North Slave Region?Get accurate weather forecasts for North Slave Region, located at latitude 62.454 and longitude -114.372. Stay updated with localized weather information tailored for North Slave Region.
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