The weather in Snoqualmie Pass in August is very cold with temperatures between 4°C and 24°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Snoqualmie Pass 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 Snoqualmie Pass in August 2025.
If you’re planning to visit Snoqualmie Pass in the near future, we highly recommend that you review the 14 day weather forecast for Snoqualmie Pass before you arrive.
Temperatures
24° / 4°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
45
mm
Sun Hours
11.5
Hrs
