Crater Lake National Park Weather by Month: What to Expect Year-Round

Month-by-Month Weather

Weather patterns at Crater Lake vary dramatically by elevation and season. The table below reflects conditions at park headquarters (6,480 feet elevation). Higher rim viewpoints typically run 10–15°F colder than these figures. All temperatures are 30-year normals from the Crater Lake NPS Headquarters climate station (NOAA 1991–2020 normals).

Summer (July–September): Full Access & Clearest Views

July and August offer the park's most reliable conditions: warm days (near 70°F), cool nights (around 40°F), minimal precipitation, and most scenic roads open. The rim loop, East Rim Drive, and North Entrance Road are fully passable. Nearly every hiking trail is snow-free. Lake visibility is at its best; clear atmospheric conditions make it ideal for photography.

September extends summer conditions. Highs drop to the low 60s, but most days remain dry and sunny. Visitation noticeably decreases compared to peak season, creating shorter wait times at viewpoints and trailheads. Watch for occasional early-season snow at the highest elevations late in the month, though roads rarely close before November 1.

Spring Snowmelt (May–June): Gradual Road Opening & Wildflower Emergence

May and June are unpredictable transition months. The park is not fully open; expect partial access and heavy snow on rim trails. Roads to Rim Village typically become passable by late May, but the full rim loop remains snow-covered and impassable for vehicles. Snowshoe rentals are available through late May for visitors willing to hike through deep snow. Temperatures range from freezing nights to highs in the 50s.

June brings accelerated melting. West Rim Drive and North Entrance Road often open by early June; East Rim Drive typically remains closed until early July due to higher elevations. Snow depths at park headquarters still exceed 2 feet mid-month. The wildflower season begins explosively as snow recedes, revealing spring bloomers (violets, buttercups, spreading phlox) across lower elevations.

Fall Transition (October): Unpredictable Conditions & Approaching Closure

October is Crater Lake's most volatile month. Daytime highs drop to the low 50s, but the weather can shift dramatically within hours: rain, snow, hail, wind, and clear sun can all occur the same day. The park typically receives around 17 inches of snow in October alone, with thunderstorms common.

The rim drive closes November 1 or earlier if heavy snow arrives sooner. All fall visits should be planned by mid-October to ensure full access. By late October, monitor the NPS website for closure announcements. Lodging facilities and most services close by end of month, restricting options for late-season visitors.

Winter & Road Closures (November–April): Limited Access via Highway 62

Winter transforms Crater Lake into an extreme-weather destination. The North Entrance Road and both rim drives close November 1 and remain closed through spring. Only Highway 62 (accessed via the West and South entrances) stays plowed and passable year-round. You can drive to Rim Village when conditions permit, but the scenic rim loop is inaccessible to regular vehicles.

Snow accumulates relentlessly. December and January each see over 80 inches of snow (roughly 7 feet per month). Annual totals exceed 40 feet at park headquarters and 50 feet at rim elevations. The lake is obscured by clouds approximately 50% of winter days, making the famous blue water invisible even during clear spells. Snowmobile access is available November through March for experienced winter travelers with proper equipment. Most lodging and nearly all visitor services close by mid-November.

Entrance Fees & Seasonal Rates

Crater Lake charges seasonal entrance fees reflecting the park's operational calendar. A private vehicle permit costs $30 from mid-May through October (the summer season) and $20 from November through mid-May. Motorcycles are $25 (summer) or $15 (winter). Non-motorized entry (hikers, cyclists) is $15 year-round; youth 15 and under are admitted free. All vehicle passes are valid for 7 days. An America the Beautiful annual pass ($80) covers entrance fees at all federal recreation sites nationwide, including Crater Lake, for one full year.

Road & Access Windows: When Seasonal Roads Reopen

The park's scenic roads follow a seasonal schedule driven by snowmelt and crew progress, not fixed calendar dates. Opening varies year to year based on winter snowfall and spring weather.

West Rim Drive and North Entrance Road typically open in early June. Crews begin plowing in April, so opening may occur as early as late May in light snow years or be delayed into mid-June during heavy snow seasons. East Rim Drive usually opens later, typically in early July, because it reaches higher elevations (9,000+ feet) and accumulates heavier snow. Rim Village road (the short connection from the main park entrance to Rim Village) can remain closed for days or weeks during heavy spring snow, even after the rim loop nominally opens.

Check the NPS website or call 541-594-3000 before visiting in May, June, or October to confirm which roads are passable on your visit date. Road conditions can shift rapidly in shoulder seasons.