Clinton, Washington Weather
Rufous Hummingbirds Arrive. Day 76 of spring. Read this microseason across nine climate regions →
Clinton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast11%—69°55°—
- ThursdayJun 4Light Drizzle21%0.04″59°52°-10°
- FridayJun 5Drizzle80%—62°47°+3°
- SaturdayJun 6Drizzle81%0.03″55°43°-7°
- SundayJun 7Overcast——64°42°+9°
- MondayJun 8Drizzle49%0.06″56°47°-8°
- TuesdayJun 9Overcast38%—64°47°+8°
PM2.5/PM10 ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±4 points).
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 43 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 1.9 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 43
PM × Wind × Precip
PM2.5/PM10 ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.67
- Wind
- breezy
- 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
- 6:41 AM
- Moonset
- 2:39 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Clinton at a glance
- Today vs. normal: 65°F — typical for the season
- Last frost: June 3 (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.
SPC Convective Outlook
Storm Prediction Center — Clinton
SPC has placed Clinton in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
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
Clinton's warmest month is August (~65°F mean) and its coldest is December (~40°F). Rainfall peaks in November (5.8 inches) and bottoms out in July (1.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 41° | 5.0″ | 17 |
| February | 43° | 3.7″ | 12 |
| March | 46° | 4.1″ | 14 |
| April | 51° | 3.4″ | 11 |
| May | 56° | 2.7″ | 9 |
| June | 61° | 2.3″ | 8 |
| July | 65° | 1.0″ | 3 |
| August | 65° | 1.1″ | 4 |
| September | 60° | 2.3″ | 8 |
| October | 52° | 3.7″ | 12 |
| November | 45° | 5.8″ | 19 |
| December | 40° | 5.0″ | 17 |
Frequently asked
- When does it freeze in Clinton?
- Clinton's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Clinton?
- November is the wettest month with about 5.8 inches of rain on average; the city receives roughly 40 inches annually.
- What is the warmest month in Clinton?
- August is typically warmest, averaging about 65°F.
- What is the coldest month in Clinton?
- December is typically coldest, averaging about 40°F.
- When can I start a vegetable garden in Clinton?
- 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 Clinton get?
- Clinton averages about 134 rainy days per year.
- What hardiness zone is Clinton?
- Clinton'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
Clinton, Washington sits in a warm-summer Mediterranean climate zone. January means hover near 41°F while July averages 65°F — a 24°F seasonal swing.
Across the year, Clinton receives about 40 inches of precipitation spread over roughly 134 rainy days.
The rhythm of the year is set by latitude (48.0°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.