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WhenToVisitParks

Updated October 2026

Best Time to Visit World War I Memorial

District of Columbia

Best month to visit

September

81°F / 64°F avg high / low

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Reviewed by WhenToVisitParks Editorial Team · Updated

Our recommendation

Visit World War I Memorial in September

September offers pleasant weather with noticeably thinner crowds (shoulder season). For comparison, April is the most crowded month (~1.5× the average month) and January is the quietest.

Annual visits
839K
2025
Busiest month
Apr
1.5× avg
Quietest month
Jan
0.4× avg
10-yr trend
steady
—

How crowded is World War I Memorial by month?

Relative crowd level by month (1.0 = the park's average month), from NPS visitation records 2021–2025.

0.4×
0.5×
1.3×
1.5×
1.4×
1.3×
1.1×
0.9×
0.9×
1.1×
0.9×
0.7×

Month-by-month crowd, weather & daylight

World War I Memorial weather by month →

MonthCrowd levelBest-time scoreAvg high / lowDaylight
JanuaryVery quiet43 Poor45°F / 30°F9.6 h
FebruaryQuiet42 Poor48°F / 32°F10.5 h
MarchBusy29 Poor57°F / 39°F11.7 h
AprilBusy39 Poor68°F / 48°F13.0 h
MayBusy56 Fair77°F / 58°F14.1 h
JuneBusy50 Fair85°F / 68°F14.7 h
JulyAverage44 Poor90°F / 72°F14.5 h
AugustAverage55 Fair88°F / 71°F13.5 h
Septemberour pickAverage65 Good81°F / 64°F12.2 h
OctoberAverage55 Fair69°F / 52°F11.0 h
NovemberAverage46 Fair58°F / 42°F9.8 h
DecemberQuiet42 Poor49°F / 35°F9.3 h

Climate normals (1991–2020) from the nearest NOAA station (USW00013743, ~3.4 mi away).

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About visiting World War I Memorial

World War I Memorial is a unit of the National Park System in DC and a moderately visited park, drawing about 839,000 recreation visits in 2025. Visitation has held fairly steady over the past decade. Crowds concentrate sharply by season: April is the busiest month at about 1.5× the park's average month, while January is the calmest at roughly 0.4× — a 4-to-1 swing between high and low season. Roughly 27% of the year's visitors arrive in the three summer months of June, July and August alone, so timing a trip outside that window is the single biggest lever on how crowded the park feels. Weather swings from an average high-season warmth near 81°F in July down to about 38°F in January, with the wettest stretch in July and meaningful snowfall around February. About 6 months a year see comfortable average temperatures in the 50–80°F range, which is part of why crowd timing and weather timing don't always line up. The sweet spot is September: pleasant weather with noticeably thinner crowds (shoulder season). Visit then and you trade a little peak-season certainty for noticeably shorter lines and easier parking than the April rush. Daylight ranges from about 9.3 hours in midwinter to 14.7 hours near the summer solstice, which shapes how much ground you can cover in a day. These crowd figures are drawn from 2021–2025 of National Park Service visitor-use records, paired with 1991–2020 NOAA climate normals, and are updated as new monthly data is released.

Park overview

A grateful nation honors the service, valor, courage and sacrifice of the 4.7 million American sons and daughters who served in the Great War.

Weather & conditions

Washington DC gets to see all four seasons. Humidity will make the temps feel hotter in summer and colder in winter. Spring (March - May) Temp: Average high is 65.5 degrees with a low of 46.5 degrees Summer (June - August) Temp: Average high is 86 degrees with a low of 68.5 degrees Fall (September - November) Temp: Average high is 68 degrees with a low of 51.5 degrees Winter (December - February) Temp: Average high is 45 degrees with a low of 30 degrees (Source: www.usclimatedata.com)

Park overview text courtesy of the National Park Service — official park site.

Where to stay near World War I Memorial

Hotels, cabins, lodges and vacation rentals near World War I Memorial — live availability and prices to plan your trip. September is our pick for the best balance of light crowds and good weather. Full lodging guide: when to book, gateway vs in-park, and the crowd calendar that drives room rates.

Top-rated places to stay near World War I Memorial

Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

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Full lodging guide for World War I Memorial: when to book, gateway vs in-park, and the crowd calendar that drives room rates →

Getting to World War I Memorial

The nearest airport is Ronald Reagan National Airport (DCA), about 5 mi (9 min drive) away. Most visitors reach World War I Memorial by car.

Frequently Asked Questions

September offers pleasant weather with noticeably thinner crowds (shoulder season) at World War I Memorial. The park is busiest in April (about 1.5× the average month) and quietest in January.

April is the busiest month at World War I Memorial, running roughly 1.5 times the park's average monthly visitation.

January is the quietest month at World War I Memorial, at about 0.4× the average month — a good choice if you want to avoid crowds.

World War I Memorial recorded about 838,999 recreation visits in 2025. Visitation has been steady over the past decade.

Based on 1991–2020 climate normals, the warmest month at World War I Memorial averages about 81°F (July). See the month-by-month table above for the full picture.

Ronald Reagan National Airport (DCA) is the closest airport to World War I Memorial, about 5 mi (9 min drive) away.

Water quality of lakes near World War I Memorial

If you are planning to swim, paddle or fish on this trip, these graded lakes are within a 40-mile drive. Grades are A–F from EPA and state-agency sampling.

Beach water quality near World War I Memorial

Beaches within a 40-mile drive, graded on multi-year bacteria sampling from EPA BEACON — worth checking before you plan a swim day.

Sources: National Park Service Visitor Use Statistics (2021–2025), NOAA NCEI U.S. Climate Normals 1991–2020. Crowd index = a month's visits ÷ the park's average month.