Ellensburg

What is the climate like in Ellensburg?

The best time to visit Ellensburg is typically May – September, with trip comfort peaking in July (9.3/10). Ellensburg is warmest in July, when daily highs average 85°F (30°C), and coolest in January, when lows fall to about 24°F (-4°C). The wettest month is typically December and the driest is July; the year sees roughly 20 in (510 mm) of precipitation.

• Best time to visitMay – September — comfort peaks in July (9.3/10)
• Warmest monthJuly — average high 85°F (30°C)
• Coolest monthJanuary — average low 24°F (-4°C)
• Wettest monthDecember (3.6 in (90 mm))
• Driest monthJuly (0.1 in (3 mm))
• Annual precipitation20 in (510 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromEllensburg, 3 km away (1893-2026)