Brenham, TX Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Brenham's primary NOAA station, BRENHAM.
The climate verdict for Brenham
Water is the standout signal in Brenham, Texas: 48.0 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 68°F. It scores 96/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 96% of them.
- 68°F
- average temperature, NOAA 1991-2020 normal
- 96/100
- comfort score, above 96% of station-mapped location scores
- 48.0"
- annual precipitation
- 273 days
- frost-free days per growing season
Brenham: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00411048 · Brenham, TX 68°F mean · 48.0" precip
TEMP-MILD · RANK-WARM · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 68°F
- RANK-WARM #6,381
- PHOTO-FINISH ≈ Cameron
- PRCP-MID 48.0"
- SWING-MID 34°F
- COMF-TOP 96/100
- LOAD-MIX H/C balanced
- STN-1 USC00411048
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Cameron, TX (+ 0 °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.
- Brenham (this station) 68°F
- Hot Franklin, TX 68°F
- Near Cameron, TX 68°F
- Near Dallas Love Fld, TX 68°F
- Near Elgin, TX 68°F
Brenham 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 · Brenham
Brenham: 81/100 · grade B
Brenham publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Brenham, not an official NOAA rating. Rankings still use Comfort Score 96/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 68.0°F · 0.5° from 67.5°F | 96/100 · A |
| Frost-free season | 273 days/year | 95/100 · A |
| Normal heat + freeze calendar | 100 calendar days | 76/100 · B |
| Precipitation balance | 48.0 in · 13.0 from 35 in | 54/100 · D |
Brenham · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Brenham is a temperate Köppen climate: Cfa
Coldest-month mean 50.2°F and warmest-month mean 84.4°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
- 84.4°F
- Coldest month
- 50.2°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 · balanced station
Where Brenham sits across the climate record
Three NOAA fields for Brenham's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 7% warmest
- Among 6,861 stations, Brenham sits in the warmer third of annual means.
- Annual precipitation
- Top 24% wettest
- Brenham's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 84%
- Warmest-to-coldest month gap for Brenham is compact versus 6,861 complete station-years.
How Brenham compares across U.S. station-mapped locations
Brenham's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
96 Top 4% score exceeds 96% 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%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Brenham's measured station temperature trend
MethodologyAcross 104 complete annual observations from 1889 to 2025, BRENHAM warmed at a fitted rate of 0.03°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Brenham primary station fitted change +0.03 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 61°F (16°C) | 40°F (4°C) | 50°F (10°C) | 3.7" | 6.2 | 0.0 |
| February | 64°F (18°C) | 43°F (6°C) | 54°F (12°C) | 3.4" | 3.2 | 0.1 |
| March | 71°F (22°C) | 49°F (10°C) | 60°F (16°C) | 3.6" | 1.3 | 0.2 |
| April | 78°F (26°C) | 57°F (14°C) | 67°F (20°C) | 3.6" | 0.0 | 1.0 |
| May | 85°F (29°C) | 65°F (18°C) | 75°F (24°C) | 5.4" | 0.0 | 8.4 |
| June | 91°F (33°C) | 72°F (22°C) | 81°F (27°C) | 4.5" | 0.0 | 22.4 |
| July | 94°F (34°C) | 74°F (23°C) | 84°F (29°C) | 2.6" | 0.0 | 27.3 |
| August | 95°F (35°C) | 74°F (23°C) | 84°F (29°C) | 3.8" | 0.0 | 28.5 |
| September | 90°F (32°C) | 68°F (20°C) | 79°F (26°C) | 4.6" | 0.0 | 18.9 |
| October | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 5.1" | 0.0 | 5.0 |
| November | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 4.2" | 1.5 | 0.0 |
| December | 63°F (17°C) | 41°F (5°C) | 52°F (11°C) | 3.7" | 5.3 | 0.0 |
The year, day by day
The year in Brenham runs from a mild 39°F around January 7 to 96°F at the peak near August 6, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 7 through September 14, covering 100 dates. The broader mild season, normal highs of 70°F or more, runs March 13 to November 15.
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 39°F around January 7.
Where the wet dates fall
The likeliest wet date is February 9, when 32% of years recorded at least a hundredth of an inch. The driest is July 28 at 17%. Summed across the calendar, that is about 92 wet dates a year.
The widest day
October 18 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Brenham.
Where Brenham Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 100 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Brenham earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
9.6 days with precipitation
9.0 days with precipitation
8.6 days with precipitation
7.1 days with precipitation
7.3 days with precipitation
7.5 days with precipitation
5.8 days with precipitation
6.3 days with precipitation
7.0 days with precipitation
6.7 days with precipitation
7.7 days with precipitation
8.8 days with precipitation
Brenham spreads its precipitation across the year
Neither half of the year dominates here: June through August take 23% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Brenham has no dry season to plan around, though it does carry a 34.2°F seasonal spread.
The gap between the wettest and driest month still matters: May averages 5.4" and July 2.6". The three wettest months together take 31% 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.
When it rains in Brenham, it arrives in quantity
48.0" of precipitation falls across only about 91 wet days here, averaging 0.53 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 91 a year, 25% of all days
- Average depth per wet day
- 0.53 inches
- Most wet days
- January, about 10
- Fewest wet days
- July, about 6
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
November 30
50% probability date
Last Spring Freeze
March 2
50% probability date
Growing Season
273 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,738
Higher = more heating needed
Cooling Degree Days
2,852
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside TX closest to Brenham 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 (68°F here).
- Beaver Dam, AZ 68°F · 0.1°F off
- Moss Bluff, LA 68°F · 0.1°F off
- St Martinville, LA 68°F · 0.1°F off
- Brunswick, GA 68°F · 0.2°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (48.0" here), excluding temperature-peer places.
- Elizabethton, TN 48.0" · 0.0" off
- Vernonia, OR 48.0" · 0.0" off
- Beverly, MA 48.0" · 0.0" off
- Marblehead, MA 48.0" · 0.0" off
Data-derived climate profile
How Brenham's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Brenham averages 48.0 inches of precipitation a year. Snowfall is not added to the interpretation because its annual value is missing. The monthly table supplies the seasonal distribution hidden by that annual total.
August and January mark the typical warm and cold ends of the calendar in Brenham's middle-range seasonal profile. The measured spread is 34.2°F. The annual average is 68°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Brenham's normal, at 1,738 and 2,852 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
The frost-free window extends for about 273 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
These labels group NOAA 1991-2020 normals from Brenham's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Brenham, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Brenham's climate
How much rain does Brenham get? ▼
How many days above 90°F does Brenham get? ▼
How much energy does heating and cooling require in Brenham? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Brenham's primary station: BRENHAM (USC00411048). 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 4810156). Match rule for Brenham: 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 Brenham 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.