Brownsville, TX Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Brownsville's primary NOAA station, BROWNSVILLE.
The climate verdict for Brownsville
Warm-season cooling demand defines Brownsville, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 76°F. It scores 88/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 89% of them.
- 76°F
- average temperature, NOAA 1991-2020 normal
- 88/100
- comfort score, above 89% of station-mapped location scores
- 26.8"
- annual precipitation
Brownsville: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00012919 · Brownsville, TX 76°F mean · 26.8" precip
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-MID · SWING-NARROW · COMF-TOP · LOAD-COOL · STN-1 · BOOK-FULL
- TEMP-HOT 76°F
- RANK-WARM #6,792
- PHOTO-FINISH ≈ Harlingen
- PRCP-MID 26.8"
- SWING-NARROW 24°F
- COMF-TOP 88/100
- LOAD-COOL 4,542 CDD
- STN-1 USW00012919
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Harlingen, TX ( -0.6 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every TX station list.
- Hot Fort Lauderdale…, FL 77°F
- Brownsville (this station) 76°F
- Cold Mcallen, TX 76°F
- Near Harlingen, TX 76°F
- Near Palm Springs Rg…, CA 76°F
Brownsville sits in Texas, the #4 hottest U.S. state at 66.2°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Brownsville
Brownsville: 57/100 · grade C
Brownsville publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals); 1 missing weight rescale to 100.
PlainClimate-derived for Brownsville, not an official NOAA rating. Rankings still use Comfort Score 88/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Annual temperature balance | 76.2°F · 8.7° from 67.5°F | 72/100 · B |
| Precipitation balance | 26.8 in · 8.2 from 35 in | 71/100 · B |
| Normal heat + freeze calendar | 139 calendar days | 53/100 · D |
| Summer moisture balance | 74.7°F mean dew point | 0/100 · F |
Brownsville · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Brownsville is a temperate Köppen climate: Cfa
Coldest-month mean 62.8°F and warmest-month mean 87.0°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 87.0°F
- Coldest month
- 62.8°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · cooling-led station
Where Brownsville sits across the climate record
Three NOAA fields for Brownsville's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 1% warmest
- Among 6,861 stations, Brownsville sits in the warmer third of annual means.
- Annual precipitation
- 36th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 95%
- Warmest-to-coldest month gap for Brownsville is compact versus 6,861 complete station-years.
How Brownsville compares across U.S. station-mapped locations
Brownsville's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
88 Top 11% score exceeds 89% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Brownsville's measured station temperature trend
MethodologyAcross 79 complete annual observations from 1947 to 2025, BROWNSVILLE warmed at a fitted rate of 0.20°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Brownsville primary station fitted change +0.20 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 73°F (23°C) | 53°F (12°C) | 63°F (17°C) | 1.1" | 0.0" | 0.5 | 0.0 |
| February | 76°F (25°C) | 57°F (14°C) | 67°F (19°C) | 1.0" | 0.0" | 0.2 | 0.4 |
| March | 81°F (27°C) | 62°F (17°C) | 71°F (22°C) | 1.4" | 0.0" | 0.0 | 1.4 |
| April | 86°F (30°C) | 68°F (20°C) | 77°F (25°C) | 1.5" | 0.0" | 0.0 | 5.4 |
| May | 90°F (32°C) | 74°F (23°C) | 82°F (28°C) | 2.2" | 0.0" | 0.0 | 16.1 |
| June | 94°F (34°C) | 77°F (25°C) | 86°F (30°C) | 2.9" | 0.0" | 0.0 | 26.8 |
| July | 95°F (35°C) | 78°F (25°C) | 86°F (30°C) | 2.0" | 0.0" | 0.0 | 29.0 |
| August | 96°F (36°C) | 78°F (25°C) | 87°F (31°C) | 2.2" | 0.0" | 0.0 | 29.5 |
| September | 92°F (33°C) | 75°F (24°C) | 83°F (29°C) | 5.7" | 0.0" | 0.0 | 21.5 |
| October | 87°F (31°C) | 69°F (20°C) | 78°F (26°C) | 3.8" | 0.0" | 0.0 | 9.4 |
| November | 80°F (27°C) | 61°F (16°C) | 71°F (21°C) | 1.8" | 0.0" | 0.0 | 0.8 |
| December | 74°F (23°C) | 55°F (13°C) | 64°F (18°C) | 1.2" | 0.0" | 0.2 | 0.1 |
The year, day by day
The year in Brownsville runs from a mild 53°F around January 4 to 97°F at the peak near August 9, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from May 15 through September 30, covering 139 dates. The broader mild season, normal highs of 70°F or more, runs January 1 to December 31.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 53°F around January 4.
Where the wet dates fall
The likeliest wet date is September 12, when 36% of years recorded at least a hundredth of an inch. The driest is April 27 at 14%. Summed across the calendar, that is about 77 wet dates a year.
The widest day
January 24 carries the biggest normal gap between afternoon and dawn, 20°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Brownsville.
Where Brownsville Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 139 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 20°F.
Brownsville earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
7.0 days with precipitation
5.3 days with precipitation
5.3 days with precipitation
4.5 days with precipitation
4.8 days with precipitation
5.8 days with precipitation
4.8 days with precipitation
6.1 days with precipitation
11.1 days with precipitation
7.6 days with precipitation
7.0 days with precipitation
7.5 days with precipitation
Brownsville spreads its precipitation across the year
Neither half of the year dominates here: June through August take 26% of the annual total and December through February 12%, with neither reaching the 35% that would mark a distinct wet season. Brownsville has no dry season to plan around, though it does carry an unusually narrow 24.2°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 5.7" and February 1.0". The three wettest months together take 46% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Brownsville's precipitation splits across the calendar
About 77 days a year record measurable precipitation here, carrying 26.8" between them, or roughly 0.35 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Brownsville's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
January 2
50% probability date
Last Spring Freeze
January 6
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
423
Higher = more heating needed
Cooling Degree Days
4,542
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 77% | 10.1 | 40% | 37% |
| February | 75% | 11.6 | 41% | 33% |
| March | 76% | 12.2 | 35% | 32% |
| April | 75% | 12.7 | 38% | 24% |
| May | 76% | 11.2 | 46% | 7% |
| June | 76% | 10.8 | 50% | 5% |
| July | 74% | 10.2 | 61% | 1% |
| August | 76% | 7.7 | 60% | 3% |
| September | 77% | 7.7 | 56% | 8% |
| October | 75% | 9.0 | 51% | 19% |
| November | 76% | 9.2 | 44% | 26% |
| December | 77% | 9.6 | 39% | 41% |
Nationwide similar cities
Other rankable U.S. places outside TX closest to Brownsville on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (76°F here).
- Coral Springs, FL 76°F · 0.0°F off
- Needles, CA 76°F · 0.0°F off
- Lihue, HI 76°F · 0.1°F off
- Everglades, FL 76°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (26.8" here), excluding temperature-peer places.
- Kinsley, KS 26.8" · 0.0" off
- Wentworth, SD 26.8" · 0.0" off
- Cheyenne, OK 26.8" · 0.0" off
- Taylor, NE 26.8" · 0.0" off
Data-derived climate profile
How Brownsville's climate pattern fits together
cooling led · moderate · low swing
Warm-season load persists through a relatively even calendar in Brownsville. Cooling totals 4,542 degree days, more than double the 423 heating measure, and the 24.2°F seasonal range is compact rather than sharply divided.
Brownsville's 26.8 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Recorded annual snowfall is negligible. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
Temperature varies within a narrow 24.2°F band across the normal year. August and January mark the typical warm and cold ends of the calendar. The annual average is 76°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A frost-free growing-season length is not available for Brownsville. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Brownsville's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For Brownsville that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Brownsville's climate
How much rain does Brownsville get? ▼
How many days above 90°F does Brownsville get? ▼
How much energy does heating and cooling require in Brownsville? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Brownsville's primary station: BROWNSVILLE (USW00012919). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4810768). Match rule for Brownsville: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Brownsville comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.