Eugene climate

Name: Eugene
Address: US

Eugene is warmest in August, with average highs of 29 °C, and coldest in December, when nights average 1.4 °C. December is the wettest month (209 mm) and July the driest (9.1 mm). Figures are 1991–2020 climate normals.

Across a full year Eugene averages 1,287 mm of rain, 80 days above 25 °C and 44 days below freezing.

United States · 131 m elevation · population 176,654 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 29 °C
Coldest month December 1.4 °C
Driest month July 9 mm
Wettest month December 209 mm
Least cloud August 28 % cloud
Hottest on record July 40 °C
Coldest on record December -13 °C

What to expectEugene through the year

Eugene has a clear annual cycle: average daily highs run from 8.5 °C in December to 29 °C in August, a swing of 16 °C in mean temperature across the year.

Counted across a normal year, 80 days a year reach 25 °C, 27 of them reach 30 °C, 44 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in July.

Rain is strongly seasonal. December averages 209 mm against 9 mm in July — 23 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	9.4 °C	174 mm	75 %
February	11.2 °C	137 mm	72 %
March	13.2 °C	160 mm	73 %
April	15.4 °C	131 mm	71 %
May	19.1 °C	83 mm	63 %
June	22.4 °C	45 mm	53 %
July	28.0 °C	9 mm	28 %
August	28.5 °C	13 mm	28 %
September	25.3 °C	40 mm	37 %
October	18.2 °C	103 mm	56 %
November	11.9 °C	185 mm	73 %
December	8.5 °C	209 mm	76 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	9.4 °C	1.6 °C	4.6 °C	18.9 °C	-11.0 °C	0	0	11
February	11.2 °C	1.8 °C	5.6 °C	22.8 °C	-9.2 °C	0	0	10
March	13.2 °C	3.1 °C	7.3 °C	23.0 °C	-9.6 °C	0	0	5
April	15.4 °C	4.8 °C	9.4 °C	28.1 °C	-3.2 °C	0	0	1
May	19.1 °C	7.8 °C	12.7 °C	33.2 °C	0.5 °C	4	0	0
June	22.4 °C	10.3 °C	15.6 °C	38.5 °C	3.8 °C	8	2	0
July	28.0 °C	12.9 °C	19.7 °C	40.1 °C	6.9 °C	24	9	0
August	28.5 °C	13.2 °C	19.9 °C	39.9 °C	7.4 °C	26	11	0
September	25.3 °C	11.2 °C	17.3 °C	35.8 °C	4.1 °C	16	5	0
October	18.2 °C	7.4 °C	11.9 °C	32.1 °C	-4.6 °C	2	0	0
November	11.9 °C	3.9 °C	7.2 °C	21.5 °C	-7.0 °C	0	0	5
December	8.5 °C	1.4 °C	4.3 °C	16.3 °C	-13.3 °C	0	0	11

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	174 mm	17	9.3 h/day	75 %	88 %	12 km/h
February	137 mm	15	10 h/day	72 %	86 %	13 km/h
March	160 mm	17	12 h/day	73 %	83 %	13 km/h
April	131 mm	16	13 h/day	71 %	80 %	13 km/h
May	83 mm	11	15 h/day	63 %	76 %	12 km/h
June	45 mm	7	15 h/day	53 %	71 %	13 km/h
July	9 mm	2	15 h/day	28 %	60 %	13 km/h
August	13 mm	2	14 h/day	28 %	60 %	13 km/h
September	40 mm	5	13 h/day	37 %	65 %	12 km/h
October	103 mm	11	11 h/day	56 %	78 %	12 km/h
November	185 mm	16	9.6 h/day	73 %	87 %	12 km/h
December	209 mm	17	8.9 h/day	76 %	89 %	13 km/h

How Eugene compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Eugene	29 °C	1.4 °C	1,287 mm	80
Salem · United States	29 °C	2.1 °C	1,062 mm	83
Portland · United States	29 °C	2.0 °C	1,227 mm	81
Vancouver · United States	28 °C	1.7 °C	1,497 mm	76
Tacoma · United States	25 °C	1.8 °C	1,179 mm	45

Where Eugene ranks

Ranking	Position	Value
Places with the best weather in North America in September	8thof 50	93/100
Places with the best weather in North America in June	20thof 50	91/100
Places with the best weather in North America in July	23rdof 50	87/100
Places with the best weather in North America in August	33rdof 50	86/100
The coolest places in North America in May	34thof 50	19 °C
The coolest places in North America in June	35thof 50	22 °C

Planning a trip? See the best time to visit Eugene.

QuestionsCommon questions about Eugene’s climate

When is the best time to visit Eugene?

That depends on what you want, so the honest answer is a comparison rather than a single month. July, August, September sit closest to 20 °C on average, August is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Eugene get?

In August, the warmest month, daily highs average 29 °C. About 27 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 1.4 °C in December, the coldest month. A normal year has 44 nights below freezing.

Which month is wettest in Eugene?

December, averaging 209 mm over 17 days with rain. The driest month is July with 9 mm. The year as a whole averages 1,287 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Eugene rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.