January in Eugene averages a daily high of 8.9°C with nights around 1.9°C. Expect roughly 18.6 wet days totalling 155.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Eugene is June–September.
Based on EUGENE MAHLON SWEET FIELD, OR US (13.7km), 1995–2024. 30 years of January data.