Springfield, Oregon Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Springfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——72°53°—
- ThursdayJun 4Overcast——71°50°-1°
- FridayJun 5Overcast——66°42°-5°
- SaturdayJun 6Light Drizzle25%—61°43°-5°
- SundayJun 7Overcast——71°40°+10°
- MondayJun 8Light Drizzle42%0.11″54°48°-17°
- TuesdayJun 9Light Drizzle31%—66°49°+12°
PM2.5 at 14.0 µg/m³ (AQI 60) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. AQI up 12 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 ~84%) — afternoon ozone should stay flat.
- Present
- AQI 41
- UV peak
- 3.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 14.0 µg/m³ (AQI 60) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.68
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 6:24 AM
- Moonset
- 3:01 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Springfield 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
Springfield's warmest month is August (~68°F mean) and its coldest is December (~41°F). Rainfall peaks in December (7.2 inches) and bottoms out in July (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
Springfield sits within a warm-summer Mediterranean climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Portland, OR, Eugene, OR, Salem, OR, Medford, OR, Bend, OR.
Frequently asked
- When does it freeze in Springfield?
- Springfield's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Springfield?
- December is the wettest month with about 7.2 inches of rain on average; the city receives roughly 41 inches annually.
- What is the warmest month in Springfield?
- August is typically warmest, averaging about 68°F.
- What is the coldest month in Springfield?
- December is typically coldest, averaging about 41°F.
- When can I start a vegetable garden in Springfield?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Springfield get?
- Springfield averages about 90 rainy days per year.
- What hardiness zone is Springfield?
- Springfield's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Springfield, Oregon sits in a warm-summer Mediterranean climate zone. January means hover near 41°F while July averages 68°F — a 26°F seasonal swing.
Across the year, Springfield receives about 41 inches of precipitation spread over roughly 90 rainy days.
The rhythm of the year is set by latitude (44.1°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.