Marysville, Washington Weather
Rufous Hummingbirds Arrive. Day 77 of spring. Read this microseason across nine climate regions →
Marysville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast11%—71°57°—
- ThursdayJun 4Light Rain47%0.18″62°53°-9°
- FridayJun 5Drizzle89%—56°46°-6°
- SaturdayJun 6Heavy Drizzle84%0.08″57°44°+1°
- SundayJun 7Light Drizzle——64°43°+7°
- MondayJun 8Light Drizzle56%0.05″55°48°-9°
- TuesdayJun 9Light Drizzle45%0.06″61°47°+6°
PM2.5/PM10 ratio 0.67 with 9 mph wind — characteristic of long-range haze transport rather than a local source. AQI flat over the last 6 hours (within ±3 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 51 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 1.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 51
PM × Wind × Precip
PM2.5/PM10 ratio 0.67 with 9 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.67
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 7:11 AM
- Moonset
- 3:47 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Marysville at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- 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 4, 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 — Marysville
SPC has placed Marysville 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
August brings Marysville's warmest temperatures (~65°F mean) while December delivers the coldest (~40°F). Rain follows its own calendar, peaking in November (5.8 inches) and reaching its lowest point 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 |
Regional context
Marysville falls within a warm-summer Mediterranean climate region — part of a group that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Seattle, WA, Spokane, WA, Kennewick, WA, Bremerton, WA, Tacoma, WA.
Naturalist notes
Pacific rhododendrons reach peak bloom across the region during late May, their pink clusters emerging as spring temperatures stabilize.
American robins begin their second nesting cycle in late May, with pairs gathering fresh materials for new broods.
Frequently asked
- When does it freeze in Marysville?
- Marysville's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Marysville?
- November brings the heaviest rainfall with about 5.8 inches on average; the city receives roughly 40 inches annually.
- What is the warmest month in Marysville?
- August typically delivers the warmest weather, averaging about 65°F.
- What is the coldest month in Marysville?
- December typically brings the coldest temperatures, averaging about 40°F.
- When can I start a vegetable garden in Marysville?
- 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 Marysville get?
- Marysville averages about 134 rainy days per year.
- What hardiness zone is Marysville?
- Check the USDA's online lookup with the city ZIP for Marysville's current hardiness zone designation, which is determined by its lowest average winter temperature.
Climate
Marysville, Washington sits in a warm-summer Mediterranean climate zone. January temperatures hover near 41°F while July averages 65°F — a 24°F seasonal swing.
Throughout the year, Marysville receives about 40 inches of precipitation spread over roughly 134 rainy days.
Geographic factors set the rhythm of each season: latitude (48.1°N), proximity to large water bodies, and elevation all shape what grows here, when frost is likely, and what the weather story looks like day to day.