Long Beach, California Weather
Coastal fog thickens at dawn. Day 76 of spring. Read this microseason across nine climate regions →
Long Beach weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Foggy——77°60°—
- ThursdayJun 4Foggy——71°58°-6°
- FridayJun 5Foggy——71°57°0°
- SaturdayJun 6Overcast——69°63°-2°
- SundayJun 7Mostly Clear——68°61°-1°
- MondayJun 8Overcast——70°62°+2°
- TuesdayJun 9Partly Cloudy——75°64°+5°
PM2.5 at 13.8 µg/m³ (AQI 60) with a 0.61 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust. 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 46. Overcast through the UV peak window (cloud cover ~63%) — afternoon ozone should stay flat.
- Present
- AQI 46
- UV peak
- 8.6 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 26
PM × Wind × Precip
PM2.5 at 13.8 µg/m³ (AQI 60) with a 0.61 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.61
- Wind
- light
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:26 AM
- Moonset
- 3:16 PM
- In sign
- ♑︎ Capricorn
Coastal fog thickens at dawn
Long Beach at a glance
- Today vs. normal: 7°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 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.
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.