Visitation · National Battlefield

Antietam National Battlefield visitation by month and year

September is the busiest month at Antietam, when the average temperature nearby is 66 degrees. January is the quietest, and the average temperature then is 31 degrees. September runs about 7.5 times the visits of January. The warmest month is July, a little off the peak. Annual visits fell 44.0 percent, from 287,343 in 2019 to 161,006 in 2025.

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Visits by month, with temperature and precipitation

Visits by month with average temperature, precipitation, Antietam05.0k10k15k20kJanuary: 2,376 visits on average, 31.2°FJanFebruary: 3,499 visits on average, 33.6°FFebMarch: 7,926 visits on average, 40.7°FMarApril: 12,271 visits on average, 51.7°FAprMay: 15,841 visits on average, 61.2°FMayJune: 17,658 visits on average, 70.1°FJunJuly: 16,217 visits on average, 74.2°FJulAugust: 14,538 visits on average, 72.9°FAugSeptember: 17,761 visits on average, 65.9°FSepOctober: 14,731 visits on average, 54.4°FOctNovember: 9,868 visits on average, 43.9°FNovDecember: 14,928 visits on average, 35.1°FDecJanuary: 31.2°F averageFebruary: 33.6°F averageMarch: 40.7°F averageApril: 51.7°F averageMay: 61.2°F averageJune: 70.1°F averageJuly: 74.2°F averageAugust: 72.9°F averageSeptember: 65.9°F averageOctober: 54.4°F averageNovember: 43.9°F averageDecember: 35.1°F average30°F40°F50°F60°F70°F80°FVisitsRain, inches0.0 in2.0 in4.0 in6.0 inJanuary: 3.13 in precipitationFebruary: 2.41 in precipitationMarch: 3.72 in precipitationApril: 3.60 in precipitationMay: 4.57 in precipitationJune: 4.16 in precipitationJuly: 4.28 in precipitationAugust: 3.27 in precipitationSeptember: 4.40 in precipitationOctober: 3.41 in precipitationNovember: 3.08 in precipitationDecember: 3.46 in precipitation
Bars are the average recreation visits in each month over 2021 to 2025. The line is the average temperature at Sharpsburg 5 S, 5 miles from the park's reference point at 400 feet, station USC00188207 in the NOAA 1991 to 2020 climate normals. The lower panel is monthly rain from the same station, which publishes no snowfall normal.

Annual visits, 1979 to 2025

Annual recreation visits, Antietam0250k500k198019902000201020201979: 319,6101980: 352,7801981: 468,0781982: 410,3991983: 433,1221984: 528,3691985: 585,1901986: 706,7201987: 610,6741988: 135,1171989: 147,0071990: 217,2491991: 263,1101992: 243,7071993: 181,9091994: 237,8211995: 215,9141996: 246,0821997: 275,6391998: 275,3851999: 268,8972000: 286,8962001: 303,5992002: 303,2092003: 279,6942004: 237,8852005: 295,3092006: 282,6762007: 337,5692008: 352,5482009: 378,9662010: 393,9572011: 384,9872012: 510,9212013: 370,8322014: 337,0792015: 347,1802016: 351,9112017: 366,5082018: 326,1972019: 287,3432020: 85,8842021: 110,5442022: 115,6192023: 153,5602024: 197,3402025: 161,0062025: 161k
Recreation visits per calendar year. A year with a missing month is left blank rather than estimated.

The last ten years

YearRecreation visitsChange on prior year
2025161,006-18.4%
2024197,340+28.5%
2023153,560+32.8%
2022115,619+4.6%
2021110,544+28.7%
202085,884-70.1%
2019287,343-11.9%
2018326,197-11.0%
2017366,508+4.1%
2016351,911+1.4%

Visitation at other parks

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 USC00188207, 400 feet above sea level. Data refreshed October 14, 2026.