Oakland, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Oakland weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Mostly Clear——80°52°—
- FridayJun 5Overcast——84°54°+4°
- SaturdayJun 6Overcast——68°52°-16°
- SundayJun 7Overcast——72°49°+4°
- MondayJun 8Light Drizzle—0.05″66°51°-6°
- TuesdayJun 9Light Drizzle—0.02″65°52°-1°
- WednesdayJun 10Overcast——65°50°0°
PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.65 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 7 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 AM.
What's driving it
PM × Wind × Precip
PM2.5 at 5.6 µg/m³ (AQI 31) with a 0.65 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.65
- Wind
- calm
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:34 AM
- Moonset
- 4:23 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Oakland at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: April 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.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
September brings Oakland's warmest temperatures (~66°F mean) while December delivers the coldest (~52°F). Rain follows a predictable pattern, peaking in December (4.7 inches) and disappearing entirely in July (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 53° | 4.3″ | 8 |
| February | 55° | 4.3″ | 7 |
| March | 57° | 3.2″ | 7 |
| April | 59° | 1.4″ | 4 |
| May | 61° | 0.8″ | 2 |
| June | 63° | 0.2″ | 1 |
| July | 64° | 0.0″ | 0 |
| August | 65° | 0.1″ | 0 |
| September | 66° | 0.1″ | 0 |
| October | 64° | 1.1″ | 2 |
| November | 58° | 2.4″ | 4 |
| December | 52° | 4.7″ | 8 |
Regional context
Oakland belongs to the hot-summer Mediterranean climate region, sharing similar temperature ranges, seasonal patterns, and growing conditions with neighboring cities throughout the area.
Similar climates: Los Angeles, CA, San Francisco, CA, San Diego, CA, Riverside, CA, Sacramento, CA.
Naturalist notes
Late May brings the peak blooming period for California poppies across Oakland's hillsides, their orange petals opening with the morning sun.
By mid-May, Allen's hummingbirds have completed their northward migration, establishing territories in Oakland's gardens and parks.
Frequently asked
- When does it freeze in Oakland?
- Oakland's last spring frost typically occurs around mid-April, while the first fall frost arrives around mid-November.
- What is the rainy season in Oakland?
- December ranks as the wettest month with about 4.7 inches of rain on average, contributing to the city's roughly 23 inches annually.
- What is the warmest month in Oakland?
- September typically brings the warmest weather, averaging about 66°F.
- What is the coldest month in Oakland?
- December usually delivers the coldest temperatures, averaging about 52°F.
- When can I start a vegetable garden in Oakland?
- Cool-season crops like peas and lettuce can be planted around the last spring frost (mid-April), while warm-season crops such as tomatoes and peppers should wait until 1–2 weeks after.
- How many rainy days does Oakland get?
- Oakland experiences about 42 rainy days per year on average.
- What hardiness zone is Oakland?
- Oakland's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool provides the current zone designation when you enter the city ZIP code.
Climate
Oakland, California experiences a hot-summer Mediterranean climate zone. January temperatures typically hover near 53°F while July averages 64°F — creating a 12°F seasonal swing.
Throughout the year, Oakland receives about 23 inches of precipitation spread over roughly 42 rainy days.
Geography shapes Oakland's weather patterns through latitude (37.8°N), proximity to large water bodies, and elevation. These factors determine what grows here, when frost threatens, and the daily weather patterns residents experience.