Eugene averages 18.8 days a year above 90°F, with December the wettest month at 7.21 in of normal rain. The hottest day on record was 111°F on Jun 27, 2021; the coldest, −12°F on Dec 8, 1972. The single biggest 24-hour rain event recorded was 4.89 in on Dec 5, 1981.
Climate and Average Weather Year Round in Eugene
Year-round temperature
In Eugene, the warmest months are June through September, with average daily highs between 74°F and 84°F. The coldest stretch runs December through February, with highs between 47°F and 52°F and overnight lows reaching 34°F.
Rainfall through the year
Rainfall in Eugene averages 3.4 in per month over the long run. December is the wettest at 7.2 in, while July is the driest at 0.3 in.
Days at 90 °F or hotter
Eugene averages 18.8 days per year at 90 °F or hotter. The hottest year on record saw 42 such days (2021); the coolest just 7 (2001).
Precipitation this year
As of May 26, Eugene has received 13.6 in of precipitation this year — 34% below the long-term normal for this point in the year (20.7 in).