January
January visitability 49, crowd 24, value 52.
This page lists month windows for Harriet Tubman Underground Railroad National Historical Park from the checked-in NPS snapshot and the dated source cards on the page.
Answer Brief
January visitability 49, crowd 24, value 52.
February visitability 53, crowd 24, value 55.
March visitability 60, crowd 28, value 62.
April visitability 63, crowd 42, value 63.
May visitability 64, crowd 58, value 62.
June visitability 62, crowd 76, value 59.
July visitability 59, crowd 92, value 54.
August visitability 60, crowd 90, value 55.
September visitability 61, crowd 74, value 57.
October visitability 61, crowd 56, value 59.
November visitability 58, crowd 34, value 59.
December visitability 52, crowd 28, value 53.
Read the NPS Sounds methodology and about NPS Sounds for how month windows are assembled.
Data Behind This Reading
Harriet Tubman Underground Railroad National Historical Park is identified as National Historical Park with NPS code hatu.
SourceOfficial alerts should be verified on the NPS page. This site uses a checked-in snapshot, not a live operations feed.
SourceCambridge, Maryland generally experiences warm, humid summers and mild winters. Average summertime highs are in the 80s, with evening lows in the 60s. Winter temperatures usually range from the 30s to the 50s. Spring and fall are variable, but tend to be in the 50s and 60s. Precipitation is spread throughout the year. For more information, see: http://forecast.weather.gov/MapClick.php?lat=38.37100441991913&lon=-76.13347536809295#.WCNeYWorLIU
Sourcebest_time page source cards come from the data snapshot October 27, 2026.
SourceNational Battlefield
Best primary window for Antietam: May, with April and June as strong shoulder months.
National Seashore
Best primary window for Assateague Island: May, with April and June as strong shoulder months.
Parkway
Best primary window for Baltimore-Washington: May, with April and June as strong shoulder months.
Park
Best primary window for Catoctin Mountain: May, with April and June as strong shoulder months.