Climate almanac
Monmouth
Oregon, United States · 44.85°, -123.23°
What is the climate like in Monmouth?
The best time to visit Monmouth is typically June – September, with trip comfort peaking in July (9.3/10). Monmouth is warmest in August, when daily highs average 85°F (30°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 50 in (1260 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in July (9.3/10)
- Warmest monthAugust — average high 85°F (30°C)
- Coolest monthFebruary — average low 36°F (2°C)
- Wettest monthDecember (7.8 in (198 mm))
- Driest monthJuly (0.2 in (5 mm))
- Annual precipitation50 in (1260 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromDallas 2 Ne, 12 km away (1928-2026)