Visitation · National Historic Site

Eugene O'Neill National Historic Site visitation by month and year

May is the busiest month at Eugene O'Neill, when the average temperature nearby is 59 degrees. December is the quietest, and the average temperature then is 47 degrees. The gap between them is narrow, 2,010 against 929. The warmest month is July, a little off the peak. Annual visits rose 405.5 percent from 2,944 in 2019 to 14,881 in 2025.

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Visits by month, with temperature and precipitation

Bars are the average recreation visits in each month over 2021 to 2025. The line is the average temperature at Mt Diablo Junction, 6 miles from the park's reference point at 2,170 feet, station USC00045915 in the NOAA 1991 to 2020 climate normals. The lower panel is monthly rain from the same station, which records under an inch of snow a year.

Annual visits, 1985 to 2025

Recreation visits per calendar year. A year with a missing month is left blank rather than estimated.

The last ten years

Year	Recreation visits	Change on prior year
2025	14,881	-15.7%
2024	17,653	+13.6%
2023	15,537	-17.2%
2022	18,754	-17.4%
2021	22,714	+57.5%
2020	14,423	+389.9%
2019	2,944	-14.2%
2018	3,432	-12.7%
2017	3,931	-8.3%
2016	4,287	+8.8%

Visitation at other parks

Golden Gate National Recreation Area Yosemite National Park San Juan National Historic Site Fort Vancouver National Historic Site

Source: NPS Visitor Use Statistics, monthly recreation visits, as compiled for Publicopia Labs. A year is shown only when all twelve months were reported. Temperature, precipitation and snowfall normals are the 1991 to 2020 monthly averages published by NOAA NCEI for station USC00045915, 2,170 feet above sea level. Data refreshed October 14, 2026.