Climate almanac
Forest Grove
Oregon, United States · 45.52°, -123.11°
What is the climate like in Forest Grove?
The best time to visit Forest Grove is typically June – September, with trip comfort peaking in July (9.2/10). Forest Grove is warmest in August, when daily highs average 85°F (29°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 51 in (1287 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in July (9.2/10)
- Warmest monthAugust — average high 85°F (29°C)
- Coolest monthFebruary — average low 37°F (3°C)
- Wettest monthDecember (7.9 in (201 mm))
- Driest monthJuly (0.2 in (6 mm))
- Annual precipitation51 in (1287 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromForest Grove, 1 km away (1893-2026)