Long Beach, California Weather
Coastal fog thickens at dawn. Day 77 of spring. Read this microseason across nine climate regions →
Long Beach weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Foggy——77°61°—
- ThursdayJun 4Foggy——74°60°-3°
- FridayJun 5Overcast——69°58°-5°
- SaturdayJun 6Overcast——70°63°+1°
- SundayJun 7Clear——70°62°0°
- MondayJun 8Clear——70°63°0°
- TuesdayJun 9Clear——75°62°+5°
PM2.5 at 12.8 µg/m³, PM10 at 22.3 µg/m³ — typical background levels with no transport signature. 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 36 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 9 by mid-afternoon.
- Present
- AQI 36
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 12.8 µg/m³, PM10 at 22.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.57
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 6:06 AM
- Moonset
- 4:16 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Long Beach at a glance
- Today vs. normal: 20°F below the seasonal normal for this latitude
- Last frost: March 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 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 | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
August is Long Beach's warmest month (~74°F mean) and December is its coldest (~57°F). Rainfall peaks in February (3.0 inches) and bottoms out in August (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 57° | 2.9″ | 4 |
| February | 58° | 3.0″ | 5 |
| March | 60° | 1.6″ | 3 |
| April | 63° | 0.6″ | 1 |
| May | 66° | 0.3″ | 1 |
| June | 69° | 0.1″ | 0 |
| July | 73° | 0.1″ | 0 |
| August | 74° | 0.0″ | 0 |
| September | 73° | 0.1″ | 0 |
| October | 68° | 0.5″ | 1 |
| November | 62° | 0.8″ | 2 |
| December | 57° | 2.1″ | 3 |
Regional context
Long Beach falls within a hot-summer Mediterranean climate region — sharing similar temperature ranges, seasonal patterns, and growing conditions with nearby cities.
Similar climates: Los Angeles, CA, San Francisco, CA, San Diego, CA, Riverside, CA, Sacramento, CA.
Naturalist notes
California poppies begin their peak bloom period in late March, carpeting coastal hills with brilliant orange flowers.
Allen's hummingbirds return from their southern wintering grounds in February, their metallic calls marking the approach of spring.
Frequently asked
- When does it freeze in Long Beach?
- Long Beach's last spring frost typically occurs around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Long Beach?
- February is the wettest month with about 3.0 inches of rain on average; the city receives roughly 12 inches annually.
- What is the warmest month in Long Beach?
- August is typically warmest, averaging about 74°F.
- What is the coldest month in Long Beach?
- December is typically coldest, averaging about 57°F.
- When can I start a vegetable garden in Long Beach?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Long Beach get?
- Long Beach averages about 20 rainy days per year.
- What hardiness zone is Long Beach?
- Long Beach'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
Long Beach, California experiences a hot-summer Mediterranean climate zone. January temperatures hover near 57°F while July averages 73°F — a 16°F seasonal swing.
Throughout the year, Long Beach receives about 12 inches of precipitation spread over roughly 20 rainy days.
Latitude (33.8°N), proximity to large water bodies, and elevation determine the rhythm of the year — shaping what grows here, when frost is likely, and the daily weather patterns.