Chula Vista, Texas Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Chula Vista weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Heavy Showers32%0.59″90°77°—
- FridayJun 5Heavy Drizzle15%0.07″90°75°0°
- SaturdayJun 6Light Showers24%0.01″93°78°+3°
- SundayJun 7Overcast18%—94°80°+1°
- MondayJun 8Overcast14%—92°80°-2°
- TuesdayJun 9Overcast——93°79°+1°
- WednesdayJun 10Overcast——93°78°0°
Ozone at AQI 32. AQI flat over the last 6 hours (within ±3 points). Overcast through the UV peak window (cloud cover ~85%) — afternoon ozone should stay flat.
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. Overcast through the UV peak window (cloud cover ~85%) — afternoon ozone should stay flat.
- Present
- AQI 32
- UV peak
- 9.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 19
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 5.0 µg/m³, PM10 to 7.6 µg/m³.
- PM2.5/PM10
- 0.66
- Wind
- light
- Recent rain
- 3h in last 6h
- Pattern
- washed out
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:22 AM
- Moonset
- 3:08 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Chula Vista at a glance
- Today vs. normal: 90°F — typical for the season
- Last frost: January 22 (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 4, 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.
SPC Convective Outlook
Storm Prediction Center — Chula Vista
SPC has placed Chula Vista in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | lettuce, peas, spinach, radishes | — |
| March | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| April | tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | — | 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
Chula Vista's warmest month is August (~87°F mean) and its coldest is January (~63°F). Rainfall peaks in September (5.7 inches) and bottoms out in February (1.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 63° | 1.1″ | 2 |
| February | 67° | 1.0″ | 2 |
| March | 71° | 1.4″ | 2 |
| April | 77° | 1.5″ | 2 |
| May | 82° | 2.2″ | 2 |
| June | 86° | 2.9″ | 4 |
| July | 86° | 2.0″ | 3 |
| August | 87° | 2.2″ | 4 |
| September | 83° | 5.7″ | 8 |
| October | 78° | 3.8″ | 5 |
| November | 71° | 1.8″ | 3 |
| December | 64° | 1.2″ | 3 |
Frequently asked
- When does it freeze in Chula Vista?
- Chula Vista's last spring frost typically falls around mid-February, and the first fall frost arrives around mid-December.
- What is the rainy season in Chula Vista?
- September is the wettest month with about 5.7 inches of rain on average; the city receives roughly 27 inches annually.
- What is the warmest month in Chula Vista?
- August is typically warmest, averaging about 87°F.
- What is the coldest month in Chula Vista?
- January is typically coldest, averaging about 63°F.
- When can I start a vegetable garden in Chula Vista?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-February); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Chula Vista get?
- Chula Vista averages about 39 rainy days per year.
- What hardiness zone is Chula Vista?
- Chula Vista'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
Chula Vista, Texas sits in a humid subtropical climate zone. January means hover near 63°F while July averages 86°F — a 24°F seasonal swing.
Across the year, Chula Vista receives about 27 inches of precipitation spread over roughly 39 rainy days.
The rhythm of the year is set by latitude (26.1°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.