The temperatures in Yellowknife in August are usually low and can range between 10°C and 18°C.
You can expect about 3 to 8 days of rain in Yellowknife during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Yellowknife in August 2025.
If you’re planning to visit Yellowknife in the near future, we highly recommend that you review the 14 day weather forecast for Yellowknife before you arrive.
Temperatures
18° / 10°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
78
mm
Sun Hours
9.3
Hrs