How Crowded Is Lewis and Clark in April?
April is a quiet month at Lewis and Clark National Historical Park, running about 0.8× the park's average month — roughly 7% of the year's visitors come in April. That puts it between the July peak and the December low. Overall our best-time score rates April as "Fair" for a visit. Typical April weather averages a high near 56°F and a low around 42°F, with about 5.8" of precipitation. You'll get about 13.3 hours of daylight to explore.
Frequently Asked Questions
April is quiet at Lewis and Clark National Historical Park (about 0.8× the average month). Our best-time score rates it "Fair". The single best month overall is May.
The busiest month is July and the quietest is December. April sits at about 0.8× the park's average, or 7% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.