Lomita, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Lomita weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——80°62°—
- MondayJul 6Overcast——80°59°0°
- TuesdayJul 7Mostly Clear——76°61°-4°
- WednesdayJul 8Clear——77°68°+1°
- ThursdayJul 9Clear——79°68°+2°
- FridayJul 10Overcast——77°69°-2°
- SaturdayJul 11Overcast——75°69°-2°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.73 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
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 30 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 44 around 1 PM.
- Present
- AQI 30
- UV peak
- 11.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 44
PM × Wind × Precip
PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.73 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.73
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:09 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Lomita at a glance
- Today vs. normal: 78°F — typical for the season
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 90717
16-Day Forecast — Lomita
- Sun80°62°0%
- Mon80°59°0%
- Tue76°61°0%
- Wed77°68°0%
- Thu79°68°0%
- Fri77°69°0%
- Sat75°69°1%
- Sun79°69°2%
- Mon78°69°6%
- Tue84°71°6%
- Wed82°73°2%
- Thu82°75°10%
- Fri81°73°10%
- Sat81°72°7%
- Sun83°71°13%
- Mon82°72°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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.
Microseason · July 1–5
Summer heat deepens across the valleys
Inland temperatures exceed 95°F regularly; fire danger reaches moderate to high across most of the region.
Day 186 of 365 · Wedge 37 of 72
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
The year in Lomita tops out in August (~73°F) and dips lowest in January (~54°F), with February wettest at 2.3 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 54° | 2.2″ | 9 |
| February | 55° | 2.3″ | 8 |
| March | 57° | 1.8″ | 9 |
| April | 61° | 0.8″ | 7 |
| May | 64° | 0.2″ | 4 |
| June | 67° | 0.0″ | 2 |
| July | 72° | 0.1″ | 1 |
| August | 73° | 0.0″ | 0 |
| September | 71° | 0.0″ | 1 |
| October | 67° | 0.3″ | 3 |
| November | 60° | 1.0″ | 6 |
| December | 54° | 1.7″ | 7 |
Regional context
Lomita swings from 54°F in January to 72°F in July (18°F) per NOAA NCEI 1991-2020 normals; precipitation in Lomita runs about 10.6 inches on roughly 57 measurable days.
Lomita's moisture rides winter storm tracks: February brings 2.3 inches over 7.6 wet days, while August sees only 0.0 inches across 0.2 days in the dry warm season. That cool-season-wet pattern aligns Lomita with places like Rolling Hills Estates, CA, West Carson, CA and Rolling Hills, CA.
With a coldest-month mean of 54°F, Lomita stays mostly frost-free and grows year-round. The August peak near 73°F is Lomita's real limit, pushing cool-season vegetables to spring and fall. Lomita's coastal lots stay 4-7°F milder overnight than Lomita's inland parcels.
Similar climates: Rolling Hills Estates, CA, West Carson, CA, Rolling Hills, CA, Torrance, CA, Rancho Palos Verdes, CA.
Frequently asked
- When does it freeze in Lomita?
- In Lomita, expect the last spring frost near mid-March; Lomita's first autumn frost comes around mid-December.
- What is the rainy season in Lomita?
- Rainfall in Lomita peaks in February near 2.3 inches, out of about 11 inches annually.
- What is the warmest month in Lomita?
- August is Lomita's warmest month, averaging about 73°F.
- What is the coldest month in Lomita?
- Lomita bottoms out in January, with a mean near 54°F.
- When can I start a vegetable garden in Lomita?
- Time tomatoes in Lomita for two weeks after mid-March; peas and greens start at Lomita's frost line.
- How many rainy days does Lomita get?
- Expect roughly 57 wet days a year in Lomita.
- What hardiness zone is Lomita?
- Lomita sits in the USDA zone set by January lows near 54°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Lomita?
- Lomita's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Lomita?
- See this week's day-by-day rain chances for Lomita in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Lomita?
- Current conditions for Lomita and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Lomita forecast updated?
- The Lomita forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Lomita?
- Today's sunrise and sunset times for Lomita are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Lomita?
- The next few days in Lomita's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Lomita, California occupies a hot-summer Mediterranean zone, with January means near 54°F and July around 72°F — a 18°F swing.
In a typical year Lomita records about 11 inches of precipitation on around 57 days.
The 18°F gap between Lomita's summer and winter, at 33.8°N, shapes Lomita's frost calendar.
ZIP codes in Lomita
- 90717