West Carson, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
West Carson weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Foggy——78°63°—
- MondayJul 6Overcast——76°60°-2°
- TuesdayJul 7Mostly Clear——83°61°+7°
- WednesdayJul 8Clear——86°68°+3°
- ThursdayJul 9Clear——82°69°-4°
- FridayJul 10Overcast——79°69°-3°
- SaturdayJul 11Overcast——77°69°-2°
AQI 51 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.6 µg/m³, PM10 at 18.9 µg/m³ — typical background levels with no transport signature.
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 32 now. With UV 11 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 47 around 1 PM.
- Present
- AQI 32
- UV peak
- 11.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 47
PM × Wind × Precip
PM2.5 at 14.6 µg/m³, PM10 at 18.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.77
- Wind
- light
- 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).








































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
West Carson at a glance
- Today vs. normal: 77°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.
16-Day Forecast — West Carson
- Sun78°63°0%
- Mon76°60°0%
- Tue83°61°0%
- Wed86°68°0%
- Thu82°69°0%
- Fri79°69°0%
- Sat77°69°1%
- Sun87°70°2%
- Mon89°71°6%
- Tue90°72°7%
- Wed92°73°2%
- Thu92°79°6%
- Fri93°76°10%
- Sat87°74°6%
- Sun92°72°6%
- Mon92°72°7%
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 West Carson 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
West Carson's climate, from NOAA NCEI 1991-2020 station normals, pairs 54°F Januarys with 72°F Julys — a 18°F swing. About 10.6 inches of precipitation falls over roughly 57 days a year.
Precipitation in West Carson peaks in the cool season: February averages 2.3 inches across 7.6 storm-fed days, while August bottoms out at 0.0 inches over just 0.2 rainy days. It is a winter-storm rhythm West Carson shares with places like Carson, CA, Lomita, CA and Torrance, CA.
Freezes are uncommon in West Carson, where the coldest month averages 54°F; cool-season crops grow fall through spring. Summer heat in August (about 73°F) is the binding constraint, not cold. Within West Carson, low or inland lots lose 3-5°F overnight versus West Carson's coastal ground.
Similar climates: Carson, CA, Lomita, CA, Torrance, CA, Rolling Hills Estates, CA, Gardena, CA.
Frequently asked
- When does it freeze in West Carson?
- West Carson's last spring frost lands near mid-March, and in West Carson the first fall frost follows around mid-December.
- What is the rainy season in West Carson?
- Rainfall in West Carson peaks in February near 2.3 inches, out of about 11 inches annually.
- What is the warmest month in West Carson?
- West Carson peaks in August, when the mean runs near 73°F.
- What is the coldest month in West Carson?
- January is West Carson's coldest month, averaging about 54°F.
- When can I start a vegetable garden in West Carson?
- Hardy spring crops go in near mid-March in West Carson; tender peppers and squash wait 10–14 days.
- How many rainy days does West Carson get?
- Expect roughly 57 wet days a year in West Carson.
- What hardiness zone is West Carson?
- Since January in West Carson averages 54°F, West Carson's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for West Carson?
- West Carson'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 West Carson?
- See this week's day-by-day rain chances for West Carson in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in West Carson?
- Current conditions for West Carson and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the West Carson forecast updated?
- The West Carson forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in West Carson?
- Today's sunrise and sunset times for West Carson 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 West Carson?
- The next few days in West Carson's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
In West Carson, California, the hot-summer Mediterranean climate runs from about 54°F in January to 72°F in July, a 18°F seasonal range.
Across the year, West Carson collects about 11 inches of precipitation over roughly 57 days with measurable rain or snow.
From 33.8°N, West Carson sees a 18°F seasonal swing that governs West Carson's planting and frost windows.
ZIP codes in West Carson
- 90710
- 90502