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

Brownsville, Texas Weather

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

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

Brownsville, TX
Saturday, July 4 at 9:19 AM
87
°
Mostly Clear
Feels like
93°
Humidity
69%
Wind
12 mph
Sunrise
1:42 AM
Sunset
3:25 PM
Brownsville, TX
Hour by hour · 24h
24-Hour ForecastBrownsville, TX: 24-hour forecast. Temperatures range from 78 to 96 degrees Fahrenheit.
L 78°H 96°
Brownsville, 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
    —
    —
    97°79°+2°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    97°79°0°
  5. Wednesday
    Jul 8
    Overcast
    —
    —
    96°80°-1°
  6. Thursday
    Jul 9
    Overcast
    —
    —
    96°79°0°
  7. Friday
    Jul 10
    Overcast
    —
    —
    95°80°-1°
Brownsville, TX
Next 24 hours · Warm now
HOT 90°74°87°100°6a12p6p12anow 86°high 96°low 78°
Brownsville, TX
Anemometer · 24h winds · from true
NESW
From · True
S
171° · veering 10°
Direction
S
171°
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 2310SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 10° from the s.
Brownsville, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1015.7
+1.7 mb in 3h · rising · 29.99 inHg
Now
1015.7
mb
3h
+1.7
mb
12h
+1.2
mb
24h
-0.1
mb
Regime · FAIR
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1014–1016
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1015.71013.61015.5
−24h−18h−12h−6hnow
Fair and building — a clean high settles over the region.
Brownsville, 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
Brownsville, TX
Sky cover · visibility · 24h
Cloud cover
30%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
45.9mi
UNLIMITED
73 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
14:19 UTC · Brownsville, 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
14:19 UTC · Brownsville, TX · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Brownsville, TX
Satellite · infrared · animated
Brownsville, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Brownsville, 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
8:52 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Brownsville, TX
The moon
Waning Gibbous
81% illuminated
Moonrise
11:08 PM
Moonset
10:50 AM
In sign
♓︎ Pisces
Brownsville, TX
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Brownsville 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.

ZIP codes: 78520, 78521, 78526

16-Day Forecast — Brownsville

  1. Sat96°79°1%
  2. Sun95°78°1%
  3. Mon97°79°4%
  4. Tue97°79°3%
  5. Wed96°80°1%
  6. Thu96°79°4%
  7. Fri95°80°3%
  8. Sat96°81°6%
  9. Sun97°79°9%
  10. Mon97°78°10%
  11. Tue98°77°7%
  12. Wed99°78°7%
  13. Thu98°77°3%
  14. Fri96°79°0%
  15. Sat96°81°6%
  16. Sun96°79°13%

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

Live wind & temperature near Brownsville

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

August is Brownsville's warmest stretch (~87°F) and January its coldest (~63°F); precipitation crests in September at 5.7 inches and ebbs in February to 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

Regional context

By the nearest station's NOAA NCEI 1991-2020 normals, Brownsville sees 63°F Januarys and 86°F Julys, a 24°F range, plus around 26.8 inches of precipitation across 39 days.

Summer convection drives Brownsville's precipitation: September logs 5.7 inches on 7.6 rainy days, against February's 1.0 inches on 1.9 — warm-season storms carry Brownsville's moisture. That puts Brownsville in a summer-convective cohort with places like Cameron Park, TX, Del Mar Heights, TX and Olmito, TX.

Brownsville rarely sees a hard freeze — its coldest month sits near 63°F — so planting spans most of the calendar. Heat peaks in August around 87°F, which confines cool-season crops to the shoulders of summer. Brownsville's coastal lots stay 4-7°F milder overnight than Brownsville's inland parcels.

Similar climates: Cameron Park, TX, Del Mar Heights, TX, Olmito, TX, Orason, TX, Chula Vista, TX.

Naturalist notes

Great Blue Herons begin nesting activities in February as winter temperatures moderate.

Live oak trees start their spring leaf flush in March as daylight hours increase.

Frequently asked

When does it freeze in Brownsville?
In Brownsville, expect the last spring frost near mid-February; Brownsville's first autumn frost comes around mid-December.
What is the rainy season in Brownsville?
Brownsville sees its heaviest rain in September (around 5.7 inches), part of roughly 27 inches a year.
What is the warmest month in Brownsville?
Brownsville peaks in August, when the mean runs near 87°F.
What is the coldest month in Brownsville?
January is Brownsville's coldest month, averaging about 63°F.
When can I start a vegetable garden in Brownsville?
Hardy spring crops go in near mid-February in Brownsville; tender peppers and squash wait 10–14 days.
How many rainy days does Brownsville get?
Brownsville records around 39 days of measurable precipitation annually.
What hardiness zone is Brownsville?
Because Brownsville bottoms near 63°F in January, that winter low sets Brownsville's USDA zone — verify by ZIP.
What is the 10-day forecast for Brownsville?
Brownsville'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 Brownsville?
See this week's day-by-day rain chances for Brownsville in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Brownsville?
Current conditions for Brownsville and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Brownsville forecast updated?
The Brownsville forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Brownsville?
Today's sunrise and sunset times for Brownsville 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 Brownsville?
The next few days in Brownsville's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

In Brownsville, Texas, the humid subtropical climate runs from about 63°F in January to 86°F in July, a 23°F seasonal range.

Yearly precipitation in Brownsville totals around 27 inches, spread over about 39 days of rain or snow.

From 26.0°N, Brownsville sees a 23°F seasonal swing that governs Brownsville's planting and frost windows.

All cities in Texas →

Houston, TX weather →

ZIP codes in Brownsville

  • 78521
  • 78520
  • 78526
  • 78575
  • 78578
  • 78566
  • 78522

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.