Death Valley in September: Crowds, Weather & What to Pack
Harsh season · VisitWhen score 46/100 · #9 of 12 months
September is a harsh-season month at Death Valley National Park: crowds run 38% of the March peak (61,474 average visits). Weather: highs average 108°F and lows 79°F, with 0.2″ of precipitation and 12.4 hours of daylight. Computed from NPS and NOAA data.
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Bring for Death Valley in September
- A light layer you can shed by midday (long sleeve or windbreaker)See it on AmazonWhy: a 29°F swing between the average low of 79°F and high of 108°F.
- Sun hat, SPF 50+ and 3L+ water capacitySee it on AmazonWhy: highs average 108°F.
- Electrolyte tablets (heat-illness prevention)See it on AmazonWhy: at highs of 108°F, water alone is not enough — dehydration is the real risk.
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Crowds in September
Death Valley averages 61,474 recreation visits in September — 38% of what March, the peak month, draws — the quietest month of the year. Trailheads and parking fill accordingly.
Weather & daylight
Days are seriously hot (highs average 108°F), and even nights stay hot (lows average 79°F). It is typically dry (0.2″ of precipitation). Mid-month daylight runs 12.4 hours.
NOAA 1991–2020 monthly normals, station DEATH VALLEY NP, CA US (1 mi from park coordinates, -194 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of September.
What to pack for Death Valley in September
Computed from the month's weather normals above — not a generic list.
- A light layer you can shed by midday (long sleeve or windbreaker) — a 29°F swing between the average low of 79°F and high of 108°F
- Sun hat, SPF 50+ and 3L+ water capacity — highs average 108°F
- Electrolyte tablets (heat-illness prevention) — at highs of 108°F, water alone is not enough — dehydration is the real risk (compare other options)
- 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 Death Valley are January and February.
Also at their best in September
Other parks whose computed September verdict is a best window — same NPS × NOAA formula:
- Wrangell–St. Elias in September — 25% of peak crowds, highs 56°F, score 84/100
- Guadalupe Mountains in September — 35% of peak crowds, highs 80°F, score 81/100
- Gateway Arch in September — 29% of peak crowds, highs 81°F, score 80/100
- Isle Royale in September — 39% of peak crowds, highs 65°F, score 79/100
Common questions
Is Death Valley crowded in September?
No — September is one of the quieter months: 38% of the March peak, averaging 61,474 visits (NPS, 2021–2025).
What is the weather like in Death Valley in September?
Average highs of 108°F, lows of 79°F, 0.2″ of precipitation (NOAA 1991–2020 normals, DEATH VALLEY NP, CA US station).
What should I pack for Death Valley in September?
A light layer you can shed by midday (long sleeve or windbreaker); Sun hat, SPF 50+ and 3L+ water capacity; Electrolyte tablets (heat-illness prevention) — the full weather-computed list is on this page.
See also: the best national parks to visit in September · Last verified 2026-09-24