What is the weather like in Yellowknife in September?

Expect temperatures between 6°C and 12°C with 16% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Yellowknife in September?

Yellowknife in September scores 65/100 based on 30 years of climate data. Great time to visit - recommended.

Who should visit Yellowknife in September?

September in Yellowknife is ideal for: Cultural tourists, Honeymoon couples, Business travelers.

Yellowknife Weather in September | 30-Year Forecast

Avg High

12°C

Hottest around day 1

Avg Low

6°C

Coolest around day 30

Rainy Days

1days

16% avg rain chance

Sunshine

8hrs/day

Autumn season

Essential Travel Info for Yellowknife

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

CAD

$ Canadian dollar

Language

English

+1 more

Driving

Right side

Safety

Very High Safety

GPI: 1.389

Travel Intelligence

Exclusive flight analytics & health data for Yellowknife

Smart Flight Estimator

Airport-to-Airport Logistics

unlock smart flight estimates

Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote

9/ 100

Traffic Index

Off the beaten path

Peak Daily Arrivals

slots per day

Peak

May

Low

Jul

Monthly Traffic Distribution

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Traffic Level

Low Season

Key Connections

Vancouver (YVR)

Edmonton (YEG)

Calgary (YYC)

Fort Simpson (YFS)

Lutselk'e (YSG)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Canada. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Canada.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Canada.Rabies is commonly found in some terrestrial wildlife species and bats.If rabies exposures occur while in Canada, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Yellowknife?

👍Great time to visit - recommended(65/100)

Short Answer

Yellowknife shines in September with 12°C pleasant temperatures and minimal 16% rain chance. Expect 7.6 hours of sunshine daily - pack light layers for evenings.

Decision Factors

Vaccinations required

Yellow Fever

Shoulder season - balanced conditions

68% of peak - good value with moderate crowds

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 80/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👴
Elderly travelers
77% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Yellowknife in September averages 12°C with 16% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Yellowknife in September

What are the temperatures in Yellowknife in September?

Daytime highs average 12°C, nights drop to 6°C. Temperatures remain fairly consistent.

How many rainy days in Yellowknife in September?

Expect around 1 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Yellowknife in September?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is September peak season in Yellowknife?

This is shoulder season—moderate prices and manageable crowds.

Yellowknife Weather in September

Yellowknife September Weather Calendar

Essential Travel Info for Yellowknife

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis A

Hepatitis B

Measles

Rabies

Yellow Fever

Is September a Good Time to Visit Yellowknife?

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Yellowknife in September

What are the temperatures in Yellowknife in September?

How many rainy days in Yellowknife in September?

What to wear in Yellowknife in September?

Is September peak season in Yellowknife?