Best time to visit Fort McHenry National Monument and Historic Shrine
May, October and November are the best balance at Fort McHenry National Monument and Historic Shrine: mild and dry for the park (average highs 58° to 76°F), with crowds from moderate to very busy. June is busiest, with about 49,000 visitors. December is the quietest, with highs near 48°F.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- Md Sci Ctr Baltimore, MD USW00093784
- Lat / lon
- 39.28, -76.61
- Elevation
- 20 ft
- From park center
- 2 mi
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Jan | Feb | Mar | Apr | Maybest | Jun | Jul | Aug | Sep | Octbest | Novbest | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 44° | 47° | 55° | 67° | 76° | 85° | 90° | 87° | 80° | 69° | 58° | 48° | 67° |
| Low, °F | 30° | 32° | 39° | 48° | 58° | 68° | 73° | 71° | 65° | 53° | 43° | 35° | 51° |
| Precipitation, in | 3.1 | 2.8 | 3.9 | 3.5 | 3.4 | 3.4 | 4.7 | 4.3 | 4.5 | 3.5 | 3.0 | 3.7 | 43.7 |
| Snow, in | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Daylight, h:mm | 9:41 | 10:39 | 11:50 | 13:10 | 14:18 | 14:55 | 14:40 | 13:42 | 12:24 | 11:06 | 9:58 | 9:25 | |
| Visitors, thousands | 10 | 20 | 33 | 32 | 48 | 49 | 46 | 41 | 40 | 20 | 21 | 8 | 369 |
| Crowds | Quiet | Moderate | Busy | Busy | Very busy | Very busy | Very busy | Very busy | Very busy | Moderate | Moderate | Quiet | |
| Weather | Cool | Cool | Mild, wet | Mild, wet | Mild | Hot | Very hot | Hot | Hot | Mild | Mild | Cool |
| Month | High °F | Low °F | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|
| January | 44° | 30° | 3.1 | – | 9:41 | 10,000 | Quiet | Cool |
| February | 47° | 32° | 2.8 | – | 10:39 | 20,000 | Moderate | Cool |
| March | 55° | 39° | 3.9 | – | 11:50 | 33,000 | Busy | Mild, wet |
| April | 67° | 48° | 3.5 | – | 13:10 | 32,000 | Busy | Mild, wet |
| Maybest | 76° | 58° | 3.4 | – | 14:18 | 48,000 | Very busy | Mild |
| June | 85° | 68° | 3.4 | – | 14:55 | 49,000 | Very busy | Hot |
| July | 90° | 73° | 4.7 | – | 14:40 | 46,000 | Very busy | Very hot |
| August | 87° | 71° | 4.3 | – | 13:42 | 41,000 | Very busy | Hot |
| September | 80° | 65° | 4.5 | – | 12:24 | 40,000 | Very busy | Hot |
| Octoberbest | 69° | 53° | 3.5 | – | 11:06 | 20,000 | Moderate | Mild |
| Novemberbest | 58° | 43° | 3.0 | – | 9:58 | 21,000 | Moderate | Mild |
| December | 48° | 35° | 3.7 | – | 9:25 | 8,200 | Quiet | Cool |
| Year | 67° | 51° | 43.7 | – | 369,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest July, average high 90°F
- Coldest nights January, average low 30°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 369,000 (2023–2025 average)
- State Maryland
Closures, reservations and alerts: Fort McHenry National Monument and Historic Shrine on nps.gov
Nearby
- Greenbelt ParkBest: Apr and Nov · Maryland
- Rock Creek ParkBest: Apr and Nov · Washington, DC
- Pennsylvania Avenue National Historic SiteBest: Apr and Nov · Washington, DC
- Ford's Theatre National Historic SiteBest: Apr and Nov · Washington, DC