How Crowded Is César E. Chávez in September?
September is an average month at César E. Chávez National Monument, running about 1.0× the park's average month — roughly 8% of the year's visitors come in September. That puts it between the April peak and the December low. Overall our best-time score rates September as "Good" for a visit. Typical September weather averages a high near 81°F and a low around 51°F, with about 0.2" of precipitation. You'll get about 12.2 hours of daylight to explore.
Frequently Asked Questions
September is average at César E. Chávez National Monument (about 1.0× the average month). Our best-time score rates it "Good". The single best month overall is August.
The busiest month is April and the quietest is December. September sits at about 1.0× the park's average, or 8% of annual visitation.
Source: National Park Service Visitor Use Statistics (2013–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.