Photo: Adavyd · CC BY-SA 4.0Brenham reaches 100° on about 13 days a year, more than 93% of U.S. towns
Nights in January average 41°. Precipitation peaks in May and eases off in July. In January, nights here are milder than in 90% of U.S. towns. Picnics, hikes and garden evenings come into their own from October to April, with highs of 62–82°.
A year in Brenham at a glance
Each month’s typical high and low, and what it brings.
What stands out about Brenham’s climate
Compared with towns across the U.S., with Brenham’s place in Texas beside it.
What a year in Brenham feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 273 frost-free days a year
In half of years the last 32° night comes by March 2 and the first by November 30. Frost and day counts come from NOAA’s station at Brenham, TX, 0.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Brenham’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 45 inches of rain a year
May is the wettest month and July the driest. Rain falls on about 93 days a year. Snow is rare: about 0.0" in a normal year at Bellville 6nne, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Brenham
38% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Brenham, TX.
Living with Brenham’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
273 frost-free days in zone 9a. The last frost comes by Mar 2 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 30.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 16 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Brenham from natural hazards, river flooding is the largest share (45%); heat waves, cold waves, winter storms and ice storms together are 22%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Brenham and similar climates
TownRatings has no climate map of the towns around Brenham yet.
Climates most like Brenham’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Brenham, TX | 41° | 95° | 45" | 0.0" |
| Glennville, GA | 39° | 93° | 48" | 0.0" |
| Hardeeville, SC | 38° | 92° | 48" | 0.0" |
| Macclenny, FL | 41° | 92° | 52" | 0.0" |
| Shreveport, LA | 37° | 94° | 52" | 0.1" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Brenham averaged 1.1° warmer than the 1900s. The biggest change is in February (+2.2°).
A smaller shift than in 67% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Brenham compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Brenham’s place among Texas’.
Brenham weather by month
Highs, lows and precipitation from NOAA’s grid at Brenham’s center; snow, wet days and snow on the ground from Bellville 6nne, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 41° | 3.5" | 0.0" | 9 | 0 | 47° – 58° |
| February | 66° | 45° | 3.0" | 0.0" | 9 | 0 | 47° – 64° |
| March | 72° | 51° | 3.4" | 0.0" | 8 | 0 | 54° – 69° |
| April | 79° | 57° | 3.4" | 0.0" | 7 | 0 | 63° – 74° |
| May | 86° | 66° | 5.0" | 0.0" | 7 | 0 | 71° – 80° |
| June | 92° | 71° | 4.1" | 0.0" | 8 | 0 | 79° – 86° |
| July | 95° | 74° | 2.5" | 0.0" | 6 | 0 | 80° – 88° |
| August | 96° | 73° | 3.5" | 0.0" | 7 | 0 | 80° – 90° |
| September | 90° | 68° | 3.8" | 0.0" | 7 | 0 | 75° – 84° |
| October | 82° | 58° | 4.8" | 0.0" | 7 | 0 | 67° – 76° |
| November | 71° | 49° | 4.0" | 0.0" | 7 | 0 | 54° – 66° |
| December | 64° | 42° | 3.4" | 0.0" | 9 | 0 | 46° – 58° |
| Year | 79° | 58° | 44.5" | 0.0" | 93 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 47° to 64°. June is the most reliable, staying within 7°.
Where Brenham’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Brenham’s center.
- Snow: Bellville 6nne, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Brenham, TX, 0.1 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Brenham’s climate
What is the weather like in Brenham?
A typical July afternoon reaches 95°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Brenham in winter?
January nights average 41°. About 18 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 47°.
How much snow does Brenham get?
About 0.0 inches in a normal winter at Bellville 6nne, TX, so most winters see none.
How hot does it get in Brenham?
July, with a typical high of 95° and a low of 74°. About 112 days a year reach 90° and 13 reach 100° (Brenham, TX).
When is the first and last frost in Brenham?
In half of years the last spring frost (32°) comes by March 2 and the first fall frost by November 30, about 273 frost-free days, at Brenham, TX.
What growing zone is Brenham in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Brenham?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Brenham getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 67% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Brenham.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.