Weather StoryAlmanac, microseasons, and the day's weather story.

Chula Vista, Texas Weather

Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Chula Vista weather forecast — hour by hour, 7-day outlook, NOAA radar

Chula Vista, TX
Saturday, July 4 at 9:43 AM
87
°
Mostly Clear
Feels like
94°
Humidity
70%
Wind
12 mph
Sunrise
1:42 AM
Sunset
3:25 PM
Chula Vista, TX
Hour by hour · 24h
24-Hour ForecastChula Vista, TX: 24-hour forecast. Temperatures range from 78 to 96 degrees Fahrenheit.
L 78°H 96°
Chula Vista, TX
7-day forecast
  1. Today
    Jul 4
    Mostly Clear
    —
    —
    96°79°—
  2. Sunday
    Jul 5
    Overcast
    —
    —
    95°78°-1°
  3. Monday
    Jul 6
    Overcast
    —
    —
    96°78°+1°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    96°79°0°
  5. Wednesday
    Jul 8
    Overcast
    —
    —
    95°80°-1°
  6. Thursday
    Jul 9
    Overcast
    —
    —
    95°79°0°
  7. Friday
    Jul 10
    Overcast
    —
    —
    95°80°0°
Chula Vista, TX
Next 24 hours · Warm now
HOT 90°74°87°100°6a12p6p12anow 86°high 96°low 78°
Chula Vista, TX
Anemometer · 24h winds · from true
NESW
From · True
S
173° · veering 13°
Direction
S
173°
Sustained
12
mph
Gust
16
mph
Peak 24h
21
avg 10
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 10 · pk 21 @ 6:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 239SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 13° from the s.
Chula Vista, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1015.1
+1.5 mb in 3h · rising · 29.98 inHg
Now
1015.1
mb
3h
+1.5
mb
12h
+1.0
mb
24h
-0.3
mb
Regime · FAIR
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1013–1016
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1015.61013.41015.2
−24h−18h−12h−6hnow
Fair and building — a clean high settles over the region.
Chula Vista, TX
Air quality
24
AQI
Good
→0 in 6h

AQI 24 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.9 µg/m³ (AQI 44), ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
7.9μg/m³
PM 10Good
12μg/m³
NO₂Good
2μg/m³
OzoneGood
51μg/m³
UV IndexLow
2.0

What's driving it

PM × Wind × Precip

PM2.5 at 7.9 µg/m³ (AQI 44), ratio 0.67 with 12 mph wind — characteristic of long-range haze transport rather than a local source.

PM2.5/PM10
0.67
Wind
breezy
Recent rain
0h in last 6h
Pattern
transport

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).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³310
Chula Vista, TX
Sky cover · visibility · 24h
Cloud cover
29%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
45.7mi
UNLIMITED
74 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
14:43 UTC · Chula Vista, TX · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
14:43 UTC · Chula Vista, TX · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Chula Vista, TX
Satellite · infrared · animated
Chula Vista, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Chula Vista, TX
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
6:17 AM
Sunrise
1:42 AM
Daylight
13h 43m
Sunset
3:25 PM
Civil dusk
8:53 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Chula Vista, TX
The moon
Waning Gibbous
81% illuminated
Moonrise
11:08 PM
Moonset
10:50 AM
In sign
♓︎ Pisces
Chula Vista, TX
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Chula Vista at a glance

  • Today vs. normal: 87°F — typical for the season
  • Last frost: January 22 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Chula Vista

  1. Sat96°79°1%
  2. Sun95°78°1%
  3. Mon96°78°4%
  4. Tue96°79°3%
  5. Wed95°80°2%
  6. Thu95°79°5%
  7. Fri95°80°4%
  8. Sat95°81°7%
  9. Sun97°79°9%
  10. Mon97°78°11%
  11. Tue97°77°7%
  12. Wed98°78°7%
  13. Thu98°78°3%
  14. Fri95°79°0%
  15. Sat96°81°6%
  16. Sun95°79°13%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 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.

January 1–5: Frost quiets the live oaks.January 6–10: Still water thickens with ice.January 11–15: Springs begin to move beneath ice.January 16–20: Cardinal dawn calls grow bolder.January 21–25: Late January thaw pulses.January 26–31: Last freeze locks the land.February 1–5: February's lengthening light.February 6–10: Warming winds thaw the margin.February 11–15: Magnolia blooms break the gray.February 16–20: Mockingbirds resume the dawn chorus.February 21–25: Rain replaces the last snow.February 26–28: Mist clings to greening valleys.March 1–5: The green pulse awakens.March 6–10: Hibernators emerge to call.March 11–15: Dogwood and redbud ignite.March 16–20: Swallowtails emerge from winter silk.March 21–25: Light crowns the dogwood canopy.March 26–31: Redbud cascades over the thaw.April 1–5: Thunder announces the wet season.April 6–10: Barn swallows carve the warming sky.April 11–15: Magnolia blooms and falls in a breath.April 16–20: First rainbows arch over thunderheads.April 21–25: Reeds push through marsh water.April 26–30: Frost retreats; seedlings rise free.May 1–5: Warblers flood the canopy in waves.May 6–10: Tulip poplar lights the forest crown.May 11–15: Shad pulse upstream through rapids.May 16–20: Roses open on the Piedmont edge.May 21–25: Fireflies scout the humid dusk.May 26–31: Frog choruses rise from every wetland.June 1–5: Fireflies pulse through the magnolias.June 6–10: Kudzu climbs deeper into green.June 11–15: Sun climbs to its northern throne.June 16–20: Heat settles and the rain begins.June 21–25: The longest day turns toward shadow.June 26–30: Fireflies drift through Spanish moss.July 1–5: Cicadas claim the scorching afternoon.July 6–10: Thunderheads boil and break at dusk.July 11–15: Thunder builds each drowsy afternoon.July 16–20: Cicadas claim the long noon.July 21–25: Dog days drape the earth in haze.July 26–31: Katydids begin their rasping chorus.August 1–5: Dusk arrives one minute earlier each night.August 6–10: Meteorological summer's turning page.August 11–15: Cool winds gather at the margins.August 16–20: Dog-day cicadas rise.August 21–25: Heat breaks in creek beds.August 26–31: Monarchs gather strength.September 1–5: Harvests begin in earnest.September 6–10: Dew beads on resurrection fern.September 11–15: Raptors trail the thermals.September 16–20: Day and dark find balance.September 21–25: Thunder quiets the land.September 26–30: Insects retreat below.October 1–5: Swamp waters recede.October 6–10: Maples ignite the ridge.October 11–15: Asters crown the meadows.October 16–20: Crickets sing at dusk.October 21–25: Frost paints the garden.October 26–31: Light rains whisper down.November 1–5: Sweetgum Turns Crimson.November 6–10: Camellia Blooms Break Through.November 11–15: Earth Stiffens Underfoot.November 16–20: Bare Limbs Hold the Light.November 21–25: First Frost Grips the High Ground.November 26–30: North Wind Strips the Last Leaves.December 1–5: Darkness Falls Before Dinner.December 6–10: Winter Locks the Land.December 11–15: Wildlife Retreats to Shelter.December 16–20: Ice Edges Deepen Inward.December 21–25: The Sun Begins its Return.December 26–31: The Year Turns in Silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the scorching afternoon

Dog-day cicadas emerge in waves, their rasp dominating every sunny hour; heat peaks above 90 degrees daily.

Day 185 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
Februarylettuce, peas, spinach, radishes—
Marchlettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Apriltomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
June—lettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall 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).

MonthMean tempPrecipRainy days
January63°1.1″2
February67°1.0″2
March71°1.4″2
April77°1.5″2
May82°2.2″2
June86°2.9″4
July86°2.0″3
August87°2.2″4
September83°5.7″8
October78°3.8″5
November71°1.8″3
December64°1.2″3

Frequently asked

When does it freeze in Chula Vista?
In Chula Vista, expect the last spring frost near mid-February; Chula Vista's first autumn frost comes around mid-December.
What is the rainy season in Chula Vista?
Chula Vista sees its heaviest rain in September (around 5.7 inches), part of roughly 27 inches a year.
What is the warmest month in Chula Vista?
August is Chula Vista's warmest month, averaging about 87°F.
What is the coldest month in Chula Vista?
Chula Vista bottoms out in January, with a mean near 63°F.
When can I start a vegetable garden in Chula Vista?
Frost-hardy sowings begin at mid-February in Chula Vista; warm-season starts follow two weeks on.
How many rainy days does Chula Vista get?
Expect roughly 39 wet days a year in Chula Vista.
What hardiness zone is Chula Vista?
Chula Vista's USDA zone comes from its January mean (63°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Chula Vista?
Chula Vista'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 Chula Vista?
See this week's day-by-day rain chances for Chula Vista in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Chula Vista?
Current conditions for Chula Vista and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Chula Vista forecast updated?
The Chula Vista forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Chula Vista?
Today's sunrise and sunset times for Chula Vista 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 Chula Vista?
The next few days in Chula Vista's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Chula Vista, Texas has a humid subtropical climate: January averages roughly 63°F, July about 86°F, 23°F between them.

In a typical year Chula Vista records about 27 inches of precipitation on around 39 days.

Latitude 26.1°N gives Chula Vista its 23°F swing, and with it the rhythm of Chula Vista's growing season.

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ZIP codes in Chula Vista

  • 78566

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.