Climate almanac

Joint Base Lewis McChord

Name: Joint Base Lewis McChord climate normals
Creator: Welded Anvil

Washington, United States · 47.11°, -122.58°

What is the weather like in Joint Base Lewis McChord in September?

In September, Joint Base Lewis McChord is typically 71°F (21°C) during the day and 52°F (11°C) at night. The month brings about 2.6 in (67 mm) of precipitation in total.

Average high71°F (21°C)
Average low52°F (11°C)
Precipitation2.6 in (67 mm)
Clear or mostly clear days10
Based on2016-2025 daily ERA5 reanalysis data (10-year normals)