Late summer · Weather & things to do
Snoqualmie Pass in August
Snoqualmie Pass's warmest month brings highs averaging 69°F (21°C), lows of 50°F (10°C) and about 1.5 in (38 mm) of rain.
At 97/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 69°F (21°C)
- Avg low
- 50°F (10°C)
- Rain
- 1.5 in (38 mm)
- Humidity
- 78%
- Cloud cover
- 38%
- Daylight
- ~14 h 04 min
- Comfort score
- 97/100 · Great
What August feels like
Highs near 69°F (21°C) make for comfortable sightseeing weather.
After dark, temperatures fall to about 50°F (10°C).
About 1.5 in (38 mm) of rain falls in a typical year's August.
Plan around August
August is one of Snoqualmie Pass's best months on the climate data.
- Comfort holds steady from July (98 → 97/100).
- Our Seattle, Snoqualmie Pass & Leavenworth route is planned for Late Nov – Dec, a window set by the holiday season rather than the weather — August falls outside it.
What to pack for August
- A warm layer for eveningslows near 50°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Snoqualmie Pass in August
August is good outdoor weather here, so these picks lean toward the open air.
Twede's Cafe
North Bend diner that played the Double R in Twin Peaks, still serving cherry pie and coffee under Mount Si.
Snoqualmie Falls
A 268-foot waterfall on the Snoqualmie River, running at full force in the wet winter months.
Why now August scores 97/100 for comfort, good conditions for being outside.
Gold Creek Pond
Flat snowshoe loop around a mountain pond on the east side of the pass, reached from the Gold Creek Sno-Park.
Why now Highs near 69°F and 1.5 in of monthly rain make this an easy outdoor pick.
The Summit at Snoqualmie
Four ski areas at the top of I-90, the closest skiing to Seattle, with one of the largest night-skiing operations in the country.
Why now One to do outside while the weather is on your side.
Nearby in August
- Leavenworth in August~37 mi · highs 83°F, 0.7 in rain · 8°C (14°F) warmer by day, drier
- Seattle in August~45 mi · highs 75°F, 1.1 in rain · 3°C (6°F) warmer by day, about as wet
- Bainbridge Island in August~54 mi · highs 75°F, 1.1 in rain · 3°C (6°F) warmer by day, about as wet
- Olympic NP in August~105 mi · highs 59°F, 1.7 in rain · 5°C (10°F) cooler by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~1,198 m to Snoqualmie Pass's ~923 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Snoqualmie Pass in August: quick answers
Is August a good time to visit Snoqualmie Pass?
Yes. On the climate data it's one of the best months, scoring 97/100. Expect highs of 69°F (21°C) and 1.5 in (38 mm) of rain.
How hot is Snoqualmie Pass in August?
Average highs are 69°F (21°C) and average lows 50°F (10°C), making it the warmest month by daytime highs.
Does it rain a lot in Snoqualmie Pass in August?
Not much: about 1.5 in (38 mm) of rain falls across August on average, the 2nd-driest month of the year. The annual total is about 69.4 in (1764 mm).
What should I pack for Snoqualmie Pass in August?
Bring a warm layer for evenings (lows near 50°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Snoqualmie Pass
Planning Snoqualmie Pass in August?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.