Yellowknife weather in September
“A steady middle month — well worth visiting with the right expectations.”
Roughly 6 rainy days across the month, on average.
In september, Yellowknife settles into its quieter, cooler pace. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 13°C (55°F), cooling to 7°C after sunset. Rainfall is moderate — around 6 rainy days spread through the month.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Yellowknife in September
- •A merino base layer for the cold evenings
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Yellowknife in September
- →Lightweight fleeceAmazon · shop this
- →Merino travel socksAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
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Yellowknife in September — FAQ
Q01Is September a good time to visit Yellowknife?
Is September a good time to visit Yellowknife?
It is a fair time to visit — expect variable conditions and plan flexibility. In September, Yellowknife averages a high of 13°C (55°F) and a low of 7°C (44°F), with 32mm of rainfall across roughly 6 rainy days.
Q02What is the average temperature in Yellowknife in September?
What is the average temperature in Yellowknife in September?
The average high temperature in Yellowknife during September is 13°C (55°F), with an average low of 7°C (44°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive).
Q03How many rainy days does Yellowknife have in September?
How many rainy days does Yellowknife have in September?
Yellowknife averages approximately 6 rainy days in September, with a total monthly rainfall of about 32mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Yellowknife in September?
What should I pack for Yellowknife in September?
For Yellowknife in September, pack a merino base layer for evenings, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month.
Q05How crowded is Yellowknife in September?
How crowded is Yellowknife in September?
Tourist crowds in Yellowknife during September are typically moderate. Consider this when planning accommodation — prices track crowd levels closely.