Aliso Viejo, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Aliso Viejo weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——77°61°—
- MondayJul 6Foggy——78°60°+1°
- TuesdayJul 7Foggy——82°59°+4°
- WednesdayJul 8Clear——83°65°+1°
- ThursdayJul 9Clear——83°67°0°
- FridayJul 10Mostly Clear——80°64°-3°
- SaturdayJul 11Overcast——80°64°0°
AQI 34 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.4 µg/m³ (AQI 52) with a 0.70 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
PM × Wind × Precip
PM2.5 at 9.4 µg/m³ (AQI 52) with a 0.70 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.70
- 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
- 11:06 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Aliso Viejo at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: March 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 92656
16-Day Forecast — Aliso Viejo
- Sun77°61°0%
- Mon78°60°1%
- Tue82°59°0%
- Wed83°65°0%
- Thu83°67°0%
- Fri80°64°1%
- Sat80°64°1%
- Sun81°66°1%
- Mon83°69°5%
- Tue81°67°9%
- Wed90°72°6%
- Thu91°74°13%
- Fri100°81°13%
- Sat99°78°10%
- Sun87°75°19%
- Mon88°72°12%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Aliso Viejo
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 Aliso Viejo tops out in August (~71°F) and dips lowest in December (~56°F), with February wettest at 3.4 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 56° | 2.8″ | 5 |
| February | 56° | 3.4″ | 5 |
| March | 59° | 1.6″ | 3 |
| April | 61° | 0.8″ | 2 |
| May | 65° | 0.2″ | 1 |
| June | 67° | 0.1″ | 1 |
| July | 70° | 0.1″ | 0 |
| August | 71° | 0.0″ | 0 |
| September | 70° | 0.2″ | 0 |
| October | 66° | 0.5″ | 1 |
| November | 60° | 1.1″ | 1 |
| December | 56° | 1.9″ | 3 |
Regional context
Aliso Viejo's climate, from NOAA NCEI 1991-2020 station normals, pairs 56°F Januarys with 70°F Julys — a 14°F swing. About 12.7 inches of precipitation falls over roughly 23 days a year.
Precipitation in Aliso Viejo peaks in the cool season: February averages 3.4 inches across 5.3 storm-fed days, while August bottoms out at 0.0 inches over just 0.0 rainy days. It is a winter-storm rhythm Aliso Viejo shares with places like Laguna Hills, CA, Laguna Woods, CA and Laguna Beach, CA.
Aliso Viejo rarely sees a hard freeze — its coldest month sits near 56°F — so planting spans most of the calendar. Heat peaks in August around 71°F, which confines cool-season crops to the shoulders of summer. Within Aliso Viejo, low or inland lots lose 3-5°F overnight versus Aliso Viejo's coastal ground.
Similar climates: Laguna Hills, CA, Laguna Woods, CA, Laguna Beach, CA, Laguna Niguel, CA, Mission Viejo, CA.
Frequently asked
- When does it freeze in Aliso Viejo?
- Frost typically leaves Aliso Viejo by mid-March and returns to Aliso Viejo near mid-December.
- What is the rainy season in Aliso Viejo?
- Aliso Viejo sees its heaviest rain in February (around 3.4 inches), part of roughly 13 inches a year.
- What is the warmest month in Aliso Viejo?
- On average August tops the year in Aliso Viejo at about 71°F.
- What is the coldest month in Aliso Viejo?
- The coldest stretch in Aliso Viejo falls in December, around 56°F on average.
- When can I start a vegetable garden in Aliso Viejo?
- In Aliso Viejo, sow peas and hardy greens around mid-March; Aliso Viejo's tomatoes and peppers wait two weeks more.
- How many rainy days does Aliso Viejo get?
- Expect roughly 23 wet days a year in Aliso Viejo.
- What hardiness zone is Aliso Viejo?
- Since December in Aliso Viejo averages 56°F, Aliso Viejo's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Aliso Viejo?
- Aliso Viejo'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 Aliso Viejo?
- See this week's day-by-day rain chances for Aliso Viejo in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Aliso Viejo?
- Current conditions for Aliso Viejo and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Aliso Viejo forecast updated?
- The Aliso Viejo forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Aliso Viejo?
- Today's sunrise and sunset times for Aliso Viejo 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 Aliso Viejo?
- The next few days in Aliso Viejo's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
The hot-summer Mediterranean climate of Aliso Viejo, California carries typical Januarys near 56°F and Julys around 70°F — 14°F of seasonal travel.
Rain and snow bring Aliso Viejo roughly 13 inches a year across approximately 23 measurable-precipitation days.
From 33.6°N, Aliso Viejo sees a 14°F seasonal swing that governs Aliso Viejo's planting and frost windows.
ZIP codes in Aliso Viejo
- 92656