Home › Cities › United States › Oregon › Eugene
Eugene, Oregon climate
Csb Warm-summer Mediterranean
Eugene has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 84°F, while the coldest is December averaging around 34°F at night. Precipitation totals about 41 inches a year and is strongly seasonal — December alone averages 7.2 inches while July barely receives 0.32 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsEugene climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 52 | 57 | 61 | 68 | 74 | 84 | 84 | 78 | 65 | 53 | 47 |
| Avg temp (°F) | 41 | 43 | 47 | 51 | 56 | 61 | 68 | 68 | 63 | 53 | 46 | 41 |
| Avg low (°F) | 35 | 35 | 37 | 40 | 44 | 48 | 52 | 52 | 48 | 42 | 38 | 34 |
| Precipitation (in) | 6.1 | 4.7 | 4.6 | 3.3 | 2.5 | 1.2 | 0.3 | 0.4 | 1.4 | 3.2 | 6.0 | 7.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 48 | 52 | 57 | 61 | 68 | 74 |
| Avg temp (°F) | 41 | 43 | 47 | 51 | 56 | 61 |
| Avg low (°F) | 35 | 35 | 37 | 40 | 44 | 48 |
| Precipitation (in) | 6.1 | 4.7 | 4.6 | 3.3 | 2.5 | 1.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 84 | 78 | 65 | 53 | 47 |
| Avg temp (°F) | 68 | 68 | 63 | 53 | 46 | 41 |
| Avg low (°F) | 52 | 52 | 48 | 42 | 38 | 34 |
| Precipitation (in) | 0.3 | 0.4 | 1.4 | 3.2 | 6.0 | 7.2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 18 | 15 | 12 | 8 | 3 | 3 | 6 | 12 | 17 | 19 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.1 | 1 | 7 | 7 | 2 | — | — | — |
| Days with low ≤ 32°F (days) | 11 | 10 | 6 | 2 | 0.4 | — | — | — | 0.1 | 3 | 7 | 12 |
| Days with snowfall ≥ 1 in (days) | 0.1 | 0.3 | — | — | — | — | — | — | — | — | — | 0.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 18 | 15 | 12 | 8 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.1 | 1 |
| Days with low ≤ 32°F (days) | 11 | 10 | 6 | 2 | 0.4 | — |
| Days with snowfall ≥ 1 in (days) | 0.1 | 0.3 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 6 | 12 | 17 | 19 |
| Days with high ≥ 90°F (days) | 7 | 7 | 2 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.1 | 3 | 7 | 12 |
| Days with snowfall ≥ 1 in (days) | — | — | — | — | — | 0.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 74 | 74 | 73 | 67 | 59 | 39 | 39 | 45 | 60 | 74 | 77 |
| Clear days (≤ 30% cloud) | 3 | 4 | 4 | 4 | 6 | 7 | 15 | 14 | 12 | 8 | 3 | 2 |
| Partly cloudy days (30–70%) | 6 | 5 | 7 | 7 | 8 | 9 | 9 | 10 | 9 | 7 | 7 | 7 |
| Cloudy days (≥ 70%) | 22 | 19 | 21 | 20 | 18 | 14 | 7 | 6 | 9 | 15 | 20 | 22 |
| Relative humidity (%) | 93 | 90 | 88 | 86 | 84 | 83 | 80 | 74 | 72 | 80 | 90 | 93 |
| Wind speed (mph) | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.3 | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 74 | 74 | 73 | 67 | 59 |
| Clear days (≤ 30% cloud) | 3 | 4 | 4 | 4 | 6 | 7 |
| Partly cloudy days (30–70%) | 6 | 5 | 7 | 7 | 8 | 9 |
| Cloudy days (≥ 70%) | 22 | 19 | 21 | 20 | 18 | 14 |
| Relative humidity (%) | 93 | 90 | 88 | 86 | 84 | 83 |
| Wind speed (mph) | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 39 | 45 | 60 | 74 | 77 |
| Clear days (≤ 30% cloud) | 15 | 14 | 12 | 8 | 3 | 2 |
| Partly cloudy days (30–70%) | 9 | 10 | 9 | 7 | 7 | 7 |
| Cloudy days (≥ 70%) | 7 | 6 | 9 | 15 | 20 | 22 |
| Relative humidity (%) | 80 | 74 | 72 | 80 | 90 | 93 |
| Wind speed (mph) | 0.2 | 0.2 | 0.3 | 0.4 | 0.3 | 0.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Eugene-mahlon Sweet Fld (NOAA GHCN station USW00024221), about 14 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.