Eugene, Oregon Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Eugene weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——73°54°—
- ThursdayJun 4Overcast——71°50°-2°
- FridayJun 5Overcast——66°42°-5°
- SaturdayJun 6Light Drizzle27%—61°43°-5°
- SundayJun 7Overcast——71°40°+10°
- MondayJun 8Drizzle38%0.13″53°47°-18°
- TuesdayJun 9Overcast31%—65°50°+12°
PM2.5/PM10 ratio 0.64 with 7 mph wind — characteristic of long-range haze transport rather than a local source. AQI up 8 over the last 6 hours (gradual rise).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 41. Overcast through the UV peak window (cloud cover ~70%) — afternoon ozone should stay flat.
- Present
- AQI 41
- UV peak
- 3.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5/PM10 ratio 0.64 with 7 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.64
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 6:25 AM
- Moonset
- 3:01 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Eugene at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: May 10 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
August brings Eugene's warmest temperatures (~68°F mean) while December delivers the coldest (~41°F). December sees peak rainfall at 7.2 inches, while July receives minimal precipitation at 0.3 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 41° | 6.0″ | 12 |
| February | 43° | 4.7″ | 10 |
| March | 47° | 4.6″ | 11 |
| April | 51° | 3.3″ | 9 |
| May | 56° | 2.5″ | 7 |
| June | 61° | 1.2″ | 4 |
| July | 68° | 0.3″ | 1 |
| August | 68° | 0.4″ | 1 |
| September | 63° | 1.4″ | 3 |
| October | 53° | 3.2″ | 7 |
| November | 46° | 6.0″ | 12 |
| December | 41° | 7.2″ | 13 |
Regional context
Eugene belongs to a warm-summer Mediterranean climate region — sharing similar temperature ranges, seasonal patterns, and growing conditions with other nearby cities in this climate zone.
Similar climates: Portland, OR, Salem, OR, Medford, OR, Bend, OR, Gresham, OR.
Naturalist notes
Late May brings the emergence of western tiger swallowtail butterflies as temperatures warm consistently above 60°F.
Douglas fir trees release their pollen in massive yellow clouds during late April through early May.
Frequently asked
- When does it freeze in Eugene?
- Eugene's final spring frost usually occurs around mid-May, with the first fall frost returning around mid-October.
- What is the rainy season in Eugene?
- December brings the heaviest rainfall with about 7.2 inches on average; the city collects roughly 41 inches annually.
- What is the warmest month in Eugene?
- August typically delivers the warmest weather, averaging about 68°F.
- What is the coldest month in Eugene?
- December usually brings the coldest temperatures, averaging about 41°F.
- When can I start a vegetable garden in Eugene?
- Cool-season crops (peas, lettuce) can be planted around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) should wait until 1–2 weeks after.
- How many rainy days does Eugene get?
- Eugene experiences about 90 rainy days per year on average.
- What hardiness zone is Eugene?
- Eugene's USDA hardiness zone depends on its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Eugene, Oregon experiences a warm-summer Mediterranean climate zone. January temperatures hover near 41°F while July averages 68°F — a 26°F seasonal swing.
Throughout the year, Eugene collects about 41 inches of precipitation spread over roughly 90 rainy days.
Weather patterns follow the city's latitude (44.1°N), proximity to large water bodies, and elevation — factors that determine what grows here, when frost threatens, and daily weather conditions.