Baytown, Texas climate: Normal weather by month, frost dates and records
Baytown's normal year runs from 41°F January nights to 92°F August afternoons, with 64.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 20.4°C, January lows of 5°C, August highs of 34°C, 1,644 mm of precipitation a year.
- NOAA stationBaytown
- Station IDUSC00410586
- Location29.91°N 94.99°W
- Elevation26 ft (8 m)
- Population86,004
On October 23, the normal high in Baytown is 80°F and the normal low 57°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Baytown.
- Jan 63° 41°
- Feb 66° 45°
- Mar 72° 52°
- Apr 78° 59°
- May 84° 67°
- Jun 89° 73°
- Jul 92° 75°
- Aug 92° 74°
- Sep 89° 69°
- Oct 82° 60°
- Nov 71° 50°
- Dec 65° 44°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Baytown each month?
August is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 41°F. The most precipitation falls in June (7.08 in), the least in February (3.78 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 63°F | 41°F | 52.1°F | 4.85 | 11 | <1 | 4 | 10 h 20 min |
| February | 66°F | 45°F | 55.8°F | 3.78 | 9 | <1 | 1 | 11 h 10 min |
| March | 72°F | 52°F | 62.0°F | 3.94 | 9 | <1 | 1 | 12 h |
| April | 78°F | 59°F | 68.0°F | 4.51 | 8 | <1 | <1 | 12 h 50 min |
| May | 84°F | 67°F | 75.4°F | 6.01 | 8 | 3 | <1 | 13 h 40 min |
| June | 89°F | 73°F | 80.9°F | 7.08 | 10 | 16 | <1 | 14 h |
| July | 92°F | 75°F | 83.1°F | 5.49 | 10 | 24 | <1 | 13 h 50 min |
| August | 92°F | 74°F | 83.3°F | 6.82 | 11 | 25 | <1 | 13 h 20 min |
| September | 89°F | 69°F | 78.8°F | 6.41 | 10 | 14 | <1 | 12 h 20 min |
| October | 82°F | 60°F | 70.6°F | 6.13 | 7 | 2 | <1 | 11 h 30 min |
| November | 71°F | 50°F | 60.7°F | 4.94 | 8 | <1 | 1 | 10 h 40 min |
| December | 65°F | 44°F | 54.1°F | 4.77 | 11 | <1 | 2 | 10 h 10 min |
| Year (annual) | 79°F | 59°F | 68.7°F | 64.73 | 111 | 84 | 9 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 17°C | 5°C | 11.2°C | 123 mm |
| February | 19°C | 7°C | 13.2°C | 96 mm |
| March | 22°C | 11°C | 16.7°C | 100 mm |
| April | 25°C | 15°C | 20.0°C | 115 mm |
| May | 29°C | 19°C | 24.1°C | 153 mm |
| June | 32°C | 23°C | 27.2°C | 180 mm |
| July | 33°C | 24°C | 28.4°C | 139 mm |
| August | 34°C | 24°C | 28.5°C | 173 mm |
| September | 31°C | 21°C | 26.0°C | 163 mm |
| October | 28°C | 15°C | 21.4°C | 156 mm |
| November | 22°C | 10°C | 15.9°C | 125 mm |
| December | 18°C | 6°C | 12.3°C | 121 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410586; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Baytown?
Normal highs sit between 65°F and 85°F in February, March, April, May, October and November. Of those, October has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410586.
When is the last frost in Baytown?
In Baytown, the last spring frost (32°F) comes after February 20 in half of years and after March 14 in one year in ten; the first autumn frost comes before December 4 in half of years and before November 12 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- February 201 year in 10 after March 14; 9 in 10 after January 23
- First autumn frost, half of years before
- December 41 year in 10 before November 12; 9 in 10 before January 4
NOAA puts the median frost-free season at 292 days, and the season without a hard freeze (28°F) at 331 days.
A hard freeze (28°F) comes after January 30 in half of springs and before December 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Baytown in zone 9b across its 2 ZIP code areas (9b in 77521, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Baytown's NOAA station is in zone 9b: the coldest night of a typical year reaches 27°F (25 complete years).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00410586; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Baytown ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Baytown's 2 ZIP code areas are all in zone 9b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Baytown?
In a normal year in Baytown, 84 days a year reach 90°F (2 of them 100°F or more), 9 nights fall to 32°F or colder and 111 days bring measurable precipitation.
- Days at 90°F or more
- 84a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 9a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 111a normal year
The highest temperature in this station's record (since 1983) is 109°F, on September 5, 2000; the lowest is 7°F, on December 24, 1989.
The wettest calendar year on that record is 2017, with 102.85 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00410586; records: ACIS (NOAA Regional Climate Centers), station USC00410586. Records use complete months only; a month missing more than three days is left out.
How sunny is Baytown?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Baytown, 4.7 kWh per square metre a day. June is the sunniest month (84%) and February the cloudiest (67%). Among the 459 U.S. places of 50,000 or more, that ranks tied 176th (with 33 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.9 |
| February | 67% | 3.3 |
| March | 74% | 4.6 |
| April | 77% | 5.5 |
| May | 82% | 6.3 |
| June | 84% | 6.5 |
| July | 82% | 6.2 |
| August | 83% | 5.8 |
| September | 80% | 5.0 |
| October | 83% | 4.4 |
| November | 80% | 3.4 |
| December | 71% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Baytown need?
A normal year in Baytown brings 1,436 heating degree days, 73% fewer than the median U.S. place (5,373), and 2,828 cooling degree days, 3.1 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,082 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 408 | 9 |
| February | 271 | 15 |
| March | 145 | 54 |
| April | 42 | 132 |
| May | 2 | 326 |
| June | 0 | 478 |
| July | 0 | 560 |
| August | 0 | 567 |
| September | 1 | 413 |
| October | 31 | 204 |
| November | 180 | 53 |
| December | 356 | 17 |
| Year (annual) | 1,436 | 2,828 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00410586. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Baytown been warmer than normal lately?
2023 averaged 71.2°F, 2.5°F above the 1991-2020 normal of 68.7°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 71.2°F | +2.5°F | 42.23 |
Over 47 complete years from 1948 to 2023, the station's annual mean temperature rose at a fitted 3.0°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00410586; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Baytown's climate compare?
Baytown is warmer than 232 of the other 320 places with their own NOAA record in Texas, and wetter than 305. Across the 7,247 U.S. stations with normals, its annual mean of 68.7°F is warmer than 94%.
In the Köppen classification computed from these normals, Baytown is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Baytown share this climate record?
8 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Channelview, TX43,536 people · 11 mi SW
- Mont Belvieu, TX10,229 people · 8 mi SE
- Dayton, TX9,752 people · 8 mi NE
- Highlands, TX7,339 people · 8 mi SW
- Crosby, TX3,038 people · 4 mi W
- Barrett, TX2,938 people · 5 mi SW
- Sheldon, TX2,449 people · 9 mi SW
- Old River-Winfree, TX1,383 people · 10 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Baytown's climate
What is the coldest month in Baytown?
January, with a normal high of 63°F and a normal low of 41°F. The warmest is August (92°F by day, 74°F at night).
Does it snow in Baytown?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Baytown?
June, with 7.08 in of precipitation in a normal year; the driest is February with 3.78 in.
What plant hardiness zone is Baytown in?
The USDA's 2023 map puts Baytown in zone 9b across its 2 ZIP code areas (9b in 77521, the largest). By the same method at Baytown's NOAA station, the coldest night of a typical year reaches 27°F (25 years, 1991-2020): zone 9b.
How late can frost come in Baytown?
In half of years the last 32°F night comes after February 20; in one year in ten it comes after March 14. Waiting until March 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Baytown in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Liberty, TX16 miles from this station, 69.1°F a year
- Houston, TX22 miles from this station, 70.5°F a year
- Anahuac, TX23 miles from this station, 68.7°F a year
- Houston Hobby Airport, TX26 miles from this station, 71.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made