Petrified Forest in May: Crowds, Weather & What to Pack

Peak crowds · VisitWhen score 66/100 · #6 of 12 months

May is peak season — the 2nd-busiest month of the year, at Petrified Forest National Park: crowds run 91% of the June peak (58,041 average visits). Weather: highs average 78°F and lows 44°F, with 0.5″ of precipitation and 14 hours of daylight. Computed from NPS and NOAA data.

Bring for Petrified Forest in May

Warm mid-layer (fleece or light puffy)See it on AmazonWhy: mornings average 44°F.
Sturdy, broken-in hiking bootsSee it on AmazonWhy: every park, every month.
Water bottles for the daySee it on AmazonWhy: hydration is one of the NPS Ten Essentials.

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Sunlit Painted Desert hills of the Petrified Forest National Wilderness Area — Petrified Forest National Park — photo: NPS Photo (public-domain NPS media)

Crowds in May

Petrified Forest averages 58,041 recreation visits in May — 91% of what June, the peak month, draws. Trailheads and parking fill accordingly — book early and start days at dawn.

Average visits (May)

58,041 (mean 2021–2025, NPS)

Share of the year

11.6% of annual visitation

vs. peak (June)

91%

Weather & daylight

Days are mild (highs average 78°F), and mornings are chilly (lows average 44°F). It is typically dry (0.5″ of precipitation). Mid-month daylight runs 14 hours.

NOAA 1991–2020 monthly normals, station PAINTED DESERT NP, AZ US (2 mi from park coordinates, 5,760 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.

What to pack for Petrified Forest in May

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

Warm mid-layer (fleece or light puffy) — mornings average 44°F
Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month

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If your dates are flexible, consider shifting: The computed best months for Petrified Forest are February and April.

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 Petrified Forest crowded in May?

Yes — May runs 91% of Petrified Forest's peak, averaging 58,041 recreation visits (NPS, 2021–2025). See every month at Petrified Forest.

What is the weather like in Petrified Forest in May?

Average highs of 78°F, lows of 44°F, 0.5″ of precipitation (NOAA 1991–2020 normals, PAINTED DESERT NP, AZ US station). Compare it with other national parks in May.

What should I pack for Petrified Forest in May?

Warm mid-layer (fleece or light puffy); Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page. Going in June instead? Petrified Forest in June has its own list.

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