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

Kirby, Texas Weather

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

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

Kirby, TX
Saturday, July 4 at 10:12 AM
83
°
Mostly Clear
Feels like
90°
Humidity
73%
Wind
8 mph
Sunrise
1:38 AM
Sunset
3:37 PM
Kirby, TX
Hour by hour · 24h
24-Hour ForecastKirby, TX: 24-hour forecast. Temperatures range from 75 to 97 degrees Fahrenheit.
L 75°H 97°
Kirby, TX
7-day forecast
  1. Today
    Jul 4
    Overcast
    —
    —
    97°76°—
  2. Sunday
    Jul 5
    Overcast
    —
    —
    97°75°0°
  3. Monday
    Jul 6
    Overcast
    —
    —
    99°74°+2°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    99°76°0°
  5. Wednesday
    Jul 8
    Overcast
    —
    —
    100°76°+1°
  6. Thursday
    Jul 9
    Clear
    —
    —
    101°74°+1°
  7. Friday
    Jul 10
    Partly Cloudy
    —
    —
    101°74°0°
Kirby, TX
Next 24 hours · Warm now
HOT 90°70°88°105°6a12p6p12anow 83°high 97°low 75°
Kirby, TX
Anemometer · 24h winds · from true
NESW
From · True
SSW
192° · veering 17°
Direction
SSW
192°
Sustained
8
mph
Gust
13
mph
Peak 24h
21
avg 7
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 7 · pk 21 @ 11:00p
0102030MPHB1B2B3B4B5B6-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 255SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 17° from the ssw.
Kirby, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
992.9
+1.5 mb in 3h · rising · 29.32 inHg
Now
992.9
mb
3h
+1.5
mb
12h
+2.1
mb
24h
-0.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 990–993
9859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW993.3989.8992.9
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Kirby, TX
Air quality
26
AQI
Good
→-4 in 6h

AQI 26 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 5.9 µg/m³, PM10 at 7.9 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.

PM 2.5DRIVERGood
5.9μg/m³
PM 10Good
8μg/m³
NO₂Good
2μg/m³
OzoneGood
60μg/m³
UV IndexModerate
4.2

What's driving it

PM × Wind × Precip

PM2.5 at 5.9 µg/m³, PM10 at 7.9 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.75
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).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³330
Kirby, TX
Sky cover · visibility · 24h
Cloud cover
48%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
41.8mi
UNLIMITED
91 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
15:12 UTC · Kirby, 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
15:12 UTC · Kirby, TX · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Kirby, TX
Satellite · infrared · animated
Kirby, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Kirby, TX
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
6:12 AM
Sunrise
1:38 AM
Daylight
13h 59m
Sunset
3:37 PM
Civil dusk
9:05 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Kirby, TX
The moon
Waning Gibbous
81% illuminated
Moonrise
11:15 PM
Moonset
10:51 AM
In sign
♓︎ Pisces
Kirby, TX
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Kirby at a glance

  • Today vs. normal: 83°F — typical for the season
  • Last frost: February 12 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Kirby

  1. Sat97°76°0%
  2. Sun97°75°0%
  3. Mon99°74°1%
  4. Tue99°76°2%
  5. Wed100°76°1%
  6. Thu101°74°0%
  7. Fri101°74°9%
  8. Sat97°75°16%
  9. Sun101°75°11%
  10. Mon102°75°13%
  11. Tue103°76°7%
  12. Wed105°76°11%
  13. Thu106°78°16%
  14. Fri100°76°16%
  15. Sat90°74°19%
  16. Sun95°74°10%

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

Kirby's warmest month is August (~85°F mean) and its coldest is January (~52°F). Rainfall peaks in May (3.6 inches) and bottoms out in July (1.6 inches).

MonthMean tempPrecipRainy days
January52°2.3″12
February55°2.1″13
March62°2.4″16
April69°3.5″17
May76°3.6″21
June82°2.5″15
July85°1.6″11
August85°1.8″12
September80°2.4″13
October72°2.6″12
November61°2.4″14
December53°2.0″13

Regional context

Drawing on NOAA NCEI 1991-2020 normals, Kirby's January averages 52°F and July 85°F — 33°F apart — while precipitation totals roughly 29.3 inches over some 169 days.

Rainfall in Kirby stays even across the calendar: May tops out at 3.6 inches over 21.2 rainy days, and July still logs 1.6 inches across 10.6 — a narrow range for Kirby. That even rhythm groups Kirby with places like Windcrest, TX, Terrell Hills, TX and Alamo Heights, TX.

Kirby rarely sees a hard freeze — its coldest month sits near 52°F — so planting spans most of the calendar. Heat peaks in August around 85°F, which confines cool-season crops to the shoulders of summer. Across Kirby, elevation and tree cover drive a 4-7°F spread in Kirby's overnight lows.

Similar climates: Windcrest, TX, Terrell Hills, TX, Alamo Heights, TX, China Grove, TX, Converse, TX.

Frequently asked

When does it freeze in Kirby?
In Kirby, expect the last spring frost near mid-February; Kirby's first autumn frost comes around mid-December.
What is the rainy season in Kirby?
Rainfall in Kirby peaks in May near 3.6 inches, out of about 29 inches annually.
What is the warmest month in Kirby?
Kirby peaks in August, when the mean runs near 85°F.
What is the coldest month in Kirby?
January is Kirby's coldest month, averaging about 52°F.
When can I start a vegetable garden in Kirby?
Around mid-February, start frost-hardy crops in Kirby; tomatoes and basil belong a fortnight later.
How many rainy days does Kirby get?
Kirby records around 169 days of measurable precipitation annually.
What hardiness zone is Kirby?
Because Kirby bottoms near 52°F in January, that winter low sets Kirby's USDA zone — verify by ZIP.
What is the 10-day forecast for Kirby?
Kirby'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 Kirby?
See this week's day-by-day rain chances for Kirby in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Kirby?
Current conditions for Kirby and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Kirby forecast updated?
The Kirby forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Kirby?
Today's sunrise and sunset times for Kirby 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 Kirby?
The next few days in Kirby's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

The humid subtropical climate of Kirby, Texas carries typical Januarys near 52°F and Julys around 85°F — 33°F of seasonal travel.

Kirby sees close to 29 inches of precipitation annually, falling across some 169 wet days.

Kirby sits at 29.5°N; that 33°F seasonal swing frames planting windows and frost dates across Kirby.

All cities in Texas →

San Antonio, TX weather →

ZIP codes in Kirby

  • 78219

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.