Bremerton, Washington Weather
Rufous Hummingbirds Arrive. Day 78 of spring. Read this microseason across nine climate regions →
Bremerton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——64°53°—
- FridayJun 5Light Drizzle36%0.01″57°48°-7°
- SaturdayJun 6Light Showers83%0.03″55°45°-2°
- SundayJun 7Light Drizzle——65°42°+10°
- MondayJun 8Overcast49%—72°42°+7°
- TuesdayJun 9Overcast52%—77°44°+5°
- WednesdayJun 10Overcast34%—64°45°-13°
AQI 36 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 35. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 0.4 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
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
- 7:36 AM
- Moonset
- 5:04 PM
- In sign
- ♒︎ Aquarius
Rufous Hummingbirds Arrive
Bremerton at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: May 31 (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 5, 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 — Bremerton
SPC has placed Bremerton in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Bremerton's warmest temperatures at around 66°F mean, while December delivers the coldest at roughly 40°F. December also marks the wettest period with 9.9 inches of rainfall, contrasting sharply with July's dry 0.8 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 41° | 9.3″ | 14 |
| February | 42° | 5.8″ | 10 |
| March | 46° | 6.4″ | 12 |
| April | 50° | 3.9″ | 9 |
| May | 56° | 2.4″ | 6 |
| June | 61° | 1.6″ | 5 |
| July | 66° | 0.8″ | 2 |
| August | 66° | 1.1″ | 2 |
| September | 62° | 1.8″ | 5 |
| October | 53° | 5.1″ | 9 |
| November | 45° | 8.8″ | 13 |
| December | 40° | 9.9″ | 14 |
Regional context
Bremerton falls within the warm-summer Mediterranean climate region, sharing temperature ranges, seasonal patterns, and growing conditions with other nearby cities in this climate zone.
Similar climates: Seattle, WA, Spokane, WA, Kennewick, WA, Tacoma, WA, Olympia, WA.
Naturalist notes
Pacific rhododendrons reach peak bloom in late May, their large pink clusters marking the transition from spring to early summer.
American robins begin their second nesting cycle around mid-May as daylight extends past 15 hours.
Frequently asked
- When does it freeze in Bremerton?
- Spring's final frost typically occurs around mid-May in Bremerton, with the first fall frost returning around mid-October.
- What is the rainy season in Bremerton?
- December stands as the wettest month, delivering approximately 9.9 inches of rain on average, while the city's annual total reaches roughly 57 inches.
- What is the warmest month in Bremerton?
- August typically records the warmest temperatures, averaging about 66°F.
- What is the coldest month in Bremerton?
- December usually brings the coldest weather, averaging about 40°F.
- When can I start a vegetable garden in Bremerton?
- Plant cool-season crops like peas and lettuce around the last spring frost in mid-May, but wait 1–2 weeks after for warm-season varieties such as tomatoes and peppers.
- How many rainy days does Bremerton get?
- Bremerton experiences about 102 rainy days per year on average.
- What hardiness zone is Bremerton?
- Check the USDA's online lookup tool using Bremerton's ZIP code to find the current hardiness zone designation, which reflects the area's lowest average winter temperatures.
Climate
Bremerton, Washington experiences a warm-summer Mediterranean climate. January temperatures hover near 41°F, while July averages 66°F — creating a 24°F seasonal swing.
Annual precipitation totals about 57 inches, distributed across roughly 102 rainy days throughout the year.
Geography shapes Bremerton's climate through its latitude at 47.5°N, proximity to large water bodies, and elevation. These factors determine what grows in the area, frost timing, and daily weather patterns.