Interstate Park
Interstate Park in Washington has 8 sport climbing routes across 5 difficulty grades.
- 8 routes
- 5.5 – 5.10a
- Sport
Is Interstate Park open right now?
Closure in the area
There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name Interstate Park, so check the source for the area it covers (3 listed).
Grand Park 2 Fire Closure Update
Agency closure covering Mt. Baker-Snoqualmie National Forest · Order 06-05-26-16 · USFS · Mt. Baker-Snoqualmie National Forest
Grand Park 2 Fire Closure
Agency closure covering Snoqualmie Ranger District · Order 06-05-26-13 · USFS · Snoqualmie Ranger District
Bell Creek Bridge Damaged
Agency closure covering Mt. Baker-Snoqualmie National Forest · USFS · Mt. Baker-Snoqualmie National Forest
Rescission of Shooting Restrictions
Agency alert covering Mt. Baker-Snoqualmie National Forest · USFS · Mt. Baker-Snoqualmie National Forest
Electric Fire Closure Order
Agency alert covering Mt. Baker-Snoqualmie National Forest · Order 06-05-26-19 · USFS · Mt. Baker-Snoqualmie National Forest
As of · Source: USFS · Mt. Baker-Snoqualmie National Forest. Agencies don't list every closure — check before you go.
Best time to visit Interstate Park
Best months: July–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
39° / 32°
19 wet · 5 snow
Feb
42° / 32°
17 wet · 4 snow
Mar
46° / 33°
20 wet · 4 snow
Apr
51° / 36°
19 wet · 1 snow
May
59° / 42°
17 wet
Jun
63° / 46°
15 wet
Jul
70° / 51°
9 wet
Aug
71° / 52°
8 wet
Sep
64° / 47°
12 wet
Oct
54° / 41°
17 wet
Nov
44° / 36°
20 wet · 2 snow
Dec
39° / 31°
20 wet · 5 snow
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Cedar Lake, WA, 6.4 mi away at 1,560 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Closures we've recorded since August 2026
Campfire Ban in Effect Forest-wide
Mt. Baker-Snoqualmie National Forest · Order dated July 21, 2026; seen Aug 23, 2026 → lifted Sep 15, 2026 · Forest Service
Interstate Park is a climbing area in Washington's Mt. Baker-Snoqualmie National Forest, within the Snoqualmie Ranger District and the Middle Fork Snoqualmie Natural Resources Conservation Area. The land is managed by the State Department of Natural Resources, and the park sits about 0.1 mile from the Eastern Block and Headlight Point climbing areas and the Climbing Access Loop Trail. Summer is the most comfortable time to visit. Typical averages from the Cedar Lake weather station, about 6 miles away, show July and August highs around 70°F with only eight or nine wet days a month, while winter brings highs near 39°F and regular snow days. Tinkham Campground is about 3 miles away, and the Cedar River offers canoeing about 5 miles out. Denny Creek Campground is roughly 8.5 miles away.
Routes (8)
Keep exploring — more climbs worth the drive
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