Brownsville, Texas Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Brownsville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Thunderstorm30%0.87″87°77°—
- FridayJun 5Light Showers21%0.13″90°75°+3°
- SaturdayJun 6Light Drizzle20%0.01″92°78°+2°
- SundayJun 7Overcast17%—94°80°+2°
- MondayJun 8Light Drizzle14%—94°80°0°
- TuesdayJun 9Overcast——94°78°0°
- WednesdayJun 10Mostly Clear——94°78°0°
Ozone at AQI 32. AQI flat over the last 6 hours (within ±3 points). Overcast through the UV peak window (cloud cover ~80%) — 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 ~80%) — 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 2 hours of recent rain — PM2.5 down to 5.6 µg/m³, PM10 to 8.2 µg/m³.
- PM2.5/PM10
- 0.68
- Wind
- breezy
- Recent rain
- 2h 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
- 3:09 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Brownsville at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- 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 — Brownsville
SPC has placed Brownsville 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
August brings Brownsville's highest temperatures (~87°F mean) while January delivers the coldest (~63°F). September produces the most rainfall (5.7 inches) and February sees the least (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 |
Regional context
Brownsville falls within a humid subtropical climate region — sharing similar temperature ranges, seasonal patterns, and growing conditions with nearby cities.
Similar climates: Houston, TX, Dallas, TX, San Antonio, TX, Austin, TX, Fort Worth, 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?
- Brownsville's last spring frost typically falls around mid-February, and the first fall frost arrives around mid-December.
- What is the rainy season in Brownsville?
- 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 Brownsville?
- August is typically warmest, averaging about 87°F.
- What is the coldest month in Brownsville?
- January is typically coldest, averaging about 63°F.
- When can I start a vegetable garden in Brownsville?
- 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 Brownsville get?
- Brownsville averages about 39 rainy days per year.
- What hardiness zone is Brownsville?
- Brownsville'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
Brownsville, Texas experiences a humid subtropical climate zone. January temperatures hover near 63°F while July averages 86°F — a 24°F seasonal swing.
Throughout the year, Brownsville receives about 27 inches of precipitation spread over roughly 39 rainy days.
Local weather patterns follow the city's latitude (26.0°N), proximity to large water bodies, and elevation — factors that determine what grows here, when frost occurs, and daily weather conditions.