Tualatin

What is the climate like in Tualatin?

The best time to visit Tualatin is typically June – September, with trip comfort peaking in July (9.1/10). Tualatin is warmest in August, when daily highs average 86°F (30°C), and coolest in February, when lows fall to about 37°F (3°C). The wettest month is typically December and the driest is July; the year sees roughly 50 in (1271 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (9.1/10)
• Warmest monthAugust — average high 86°F (30°C)
• Coolest monthFebruary — average low 37°F (3°C)
• Wettest monthDecember (7.9 in (200 mm))
• Driest monthJuly (0.3 in (6 mm))
• Annual precipitation50 in (1271 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromOregon City, 13 km away (1948-2025)