North Tustin, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
North Tustin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——83°64°—
- MondayJul 6Overcast——84°63°+1°
- TuesdayJul 7Overcast——89°63°+5°
- WednesdayJul 8Clear——92°69°+3°
- ThursdayJul 9Clear——93°70°+1°
- FridayJul 10Overcast——91°70°-2°
- SaturdayJul 11Overcast——86°71°-5°
AQI 34 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 9.6 µg/m³ (AQI 52) with a 0.69 fine-to-coarse ratio and 6 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 32 now. With UV 12 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 50 around 1 PM.
- Present
- AQI 32
- UV peak
- 11.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 50
PM × Wind × Precip
PM2.5 at 9.6 µg/m³ (AQI 52) with a 0.69 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.69
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:07 PM
- Moonset
- 11:10 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
North Tustin at a glance
- Today vs. normal: 80°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 — North Tustin
- Sun83°64°1%
- Mon84°63°1%
- Tue89°63°0%
- Wed92°69°0%
- Thu93°70°0%
- Fri91°70°0%
- Sat86°71°0%
- Sun88°70°2%
- Mon95°71°5%
- Tue98°76°10%
- Wed96°78°5%
- Thu100°79°10%
- Fri98°79°10%
- Sat94°77°10%
- Sun98°76°19%
- Mon99°75°19%
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 North Tustin tops out in August (~77°F) and dips lowest in December (~59°F), with January wettest at 3.2 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 60° | 3.2″ | 5 |
| February | 60° | 3.0″ | 5 |
| March | 63° | 1.8″ | 3 |
| April | 65° | 0.7″ | 2 |
| May | 68° | 0.4″ | 1 |
| June | 72° | 0.1″ | 0 |
| July | 76° | 0.1″ | 0 |
| August | 77° | 0.0″ | 0 |
| September | 76° | 0.1″ | 0 |
| October | 71° | 0.6″ | 1 |
| November | 65° | 1.0″ | 2 |
| December | 59° | 2.4″ | 4 |
Regional context
North Tustin swings from 60°F in January to 76°F in July (16°F) per NOAA NCEI 1991-2020 normals; precipitation in North Tustin runs about 13.5 inches on roughly 23 measurable days.
Precipitation in North Tustin peaks in the cool season: January averages 3.2 inches across 4.5 storm-fed days, while August bottoms out at 0.0 inches over just 0.0 rainy days. That cool-season-wet pattern aligns North Tustin with places like Tustin, CA, Orange, CA and Villa Park, CA.
With a coldest-month mean of 59°F, North Tustin stays mostly frost-free and grows year-round. The August peak near 77°F is North Tustin's real limit, pushing cool-season vegetables to spring and fall. Across North Tustin, elevation and tree cover drive a 4-7°F spread in North Tustin's overnight lows.
Similar climates: Tustin, CA, Orange, CA, Villa Park, CA, Santa Ana, CA, Irvine, CA.
Frequently asked
- When does it freeze in North Tustin?
- Frost typically leaves North Tustin by mid-March and returns to North Tustin near mid-December.
- What is the rainy season in North Tustin?
- January is the wettest month in North Tustin, about 3.2 inches on average; the year totals roughly 14 inches.
- What is the warmest month in North Tustin?
- The warmest stretch in North Tustin comes in August, around 77°F on average.
- What is the coldest month in North Tustin?
- On average December is the chilliest month in North Tustin, about 59°F.
- When can I start a vegetable garden in North Tustin?
- Time tomatoes in North Tustin for two weeks after mid-March; peas and greens start at North Tustin's frost line.
- How many rainy days does North Tustin get?
- North Tustin averages about 23 days with measurable rain or snow each year.
- What hardiness zone is North Tustin?
- North Tustin's USDA zone comes from its December mean (59°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for North Tustin?
- North Tustin'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 North Tustin?
- See this week's day-by-day rain chances for North Tustin in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in North Tustin?
- Current conditions for North Tustin and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the North Tustin forecast updated?
- The North Tustin forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in North Tustin?
- Today's sunrise and sunset times for North Tustin 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 North Tustin?
- The next few days in North Tustin's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
North Tustin, California occupies a hot-summer Mediterranean zone, with January means near 60°F and July around 76°F — a 16°F swing.
Rain and snow bring North Tustin roughly 14 inches a year across approximately 23 measurable-precipitation days.
Latitude 33.8°N gives North Tustin its 16°F swing, and with it the rhythm of North Tustin's growing season.
ZIP codes in North Tustin
- 92705
- 92780
- 92711