Climate almanac
West Side Highway
Washington, United States · 46.18°, -122.92°
What is the climate like in West Side Highway?
The best time to visit West Side Highway is typically June – August, with trip comfort peaking in July (8.6/10). West Side Highway is warmest in August, when daily highs average 81°F (27°C), and coolest in February, when lows fall to about 36°F (2°C). The wettest month is typically December and the driest is July; the year sees roughly 56 in (1425 mm) of precipitation.
- Best time to visitJune – August — comfort peaks in July (8.6/10)
- Warmest monthAugust — average high 81°F (27°C)
- Coolest monthFebruary — average low 36°F (2°C)
- Wettest monthDecember (8.3 in (211 mm))
- Driest monthJuly (0.4 in (11 mm))
- Annual precipitation56 in (1425 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromLongview, 7 km away (1925-2026)