Mount Rainier in May: Crowds, Weather & What to Pack

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May is one of the best months of the year to visit Mount Rainier National Park: crowds run 20% of the July peak (85,473 average visits). Weather: highs average 48°F and lows 33°F, with 5.1″ of precipitation and 15 hours of daylight. Roads and services are only partly open this month — see the access note below. Computed from NPS and NOAA data.

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Bring for Mount Rainier in May

Warm mid-layer (fleece or light puffy)See it on AmazonWhy: mornings average 33°F.
Rain shell + pack coverSee it on AmazonWhy: 5.1″ of precipitation is normal this month.
Waterproof bootsSee it on AmazonWhy: 5.1″ of precipitation is normal this month.

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Partial access: Sunrise and Stevens Canyon roads are typically open only July–September; the road to Paradise is plowed and open year-round (carry chains in winter). Current NPS conditions →

Mount Rainier in May: what the park service says

May warms Mount Rainier's lower valleys first. On a typical May day Ohanapecosh reaches about 70°F and Longmire the low 60s, while Paradise is still near 50°F, with nights around freezing up there. The Longmire and White River wilderness information centers generally open in late May for permits. Snow lingers at 5,000 to 8,000 feet well into mid-July, so plan high hikes for later.

Source: NPS 1, NPS 2, checked 2026-11-05.

A fan-shaped waterfall cascades over lava cliffs with a rainbow in its mist. — Mount Rainier National Park — photo: NPS Photo / E. Brouwer (public-domain NPS media)

Crowds in May

Mount Rainier averages 85,473 recreation visits in May — 20% of what July, the peak month, draws. That crowd level sets the tone for parking, permits and lodging — crowds are thin by this park's standards.

Average visits (May)

85,473 (mean 2021–2025, NPS)

Share of the year

5.2% of annual visitation

vs. peak (July)

20%

Weather & daylight

Daytime stays cool (highs average 48°F), and mornings are chilly (lows average 33°F). This is one of the wetter months (5.1″ of precipitation on average). Mid-month daylight runs 15 hours.

NOAA 1991–2020 monthly normals, station RAINIER PARADISE RS, WA US (4 mi from park coordinates, 5,427 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.

What to pack for Mount Rainier in May

Computed from the month's weather normals above — not a generic list.

Warm mid-layer (fleece or light puffy) — mornings average 33°F
Rain shell + pack cover — 5.1″ of precipitation is normal this month
Waterproof boots — plus navigation and a basic first-aid kit — 5.1″ of precipitation is normal this month

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Also at their best in May

Other parks whose computed May verdict is a best window — same NPS × NOAA formula:

Lake Clark in May — 7% of peak crowds, highs 59°F, score 96/100
North Cascades in May — 11% of peak crowds, highs 69°F, score 96/100
Katmai in May — 1% of peak crowds, highs 52°F, score 95/100
Gates of the Arctic in May — 12% of peak crowds, highs 56°F, score 94/100

Common questions

Is Mount Rainier crowded in May?

No — May is one of the quieter months: 20% of the July peak, averaging 85,473 visits (NPS, 2021–2025). See every month at Mount Rainier.

What is the weather like in Mount Rainier in May?

Average highs of 48°F, lows of 33°F, 5.1″ of precipitation (NOAA 1991–2020 normals, RAINIER PARADISE RS, WA US station). Compare it with other national parks in May.

What should I pack for Mount Rainier in May?

Warm mid-layer (fleece or light puffy); Rain shell + pack cover; Waterproof boots — plus navigation and a basic first-aid kit — the full weather-computed list is on this page. Going in June instead? Mount Rainier in June has its own list.

Is everything open at Mount Rainier in May?

Sunrise and Stevens Canyon roads are typically open only July–September; the road to Paradise is plowed and open year-round (carry chains in winter). Always check the park's live NPS alerts for current conditions.

See also: the best national parks to visit in May · Last verified 2026-09-24