Port Aransas (32 mi NNE), Texas climate: Climate normals at a NOAA weather station
Port Aransas (32 mi NNE)'s normal year runs from 42°F January nights to 92°F August afternoons, with 39.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 21.2°C, January lows of 5°C, August highs of 33°C, 1,006 mm of precipitation a year.
- NOAA stationPort Aransas (32 mi NNE)
- Station IDUSW00023906
- Location28.30°N 96.82°W
- Elevation15 ft (5 m)
On October 14, the normal high in Port Aransas (32 mi NNE) is 84°F and the normal low 62°F, and the chance of measurable rain or snow is 27%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Port Aransas (32 mi NNE).
- Jan 66° 42°
- Feb 69° 48°
- Mar 74° 55°
- Apr 79° 61°
- May 85° 69°
- Jun 89° 74°
- Jul 91° 74°
- Aug 92° 74°
- Sep 89° 71°
- Oct 83° 61°
- Nov 75° 53°
- Dec 68° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Port Aransas (32 mi NNE) each month?
August is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 42°F. The most precipitation falls in June (6.16 in), the least in February (1.78 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 66°F | 42°F | 53.8°F | 2.88 | 10 | <1 | 6 | 10 h 30 min |
| February | 69°F | 48°F | 58.4°F | 1.78 | 9 | <1 | 3 | 11 h 10 min |
| March | 74°F | 55°F | 64.6°F | 2.04 | 6 | <1 | 1 | 12 h |
| April | 79°F | 61°F | 70.3°F | 2.38 | 6 | 1 | <1 | 12 h 50 min |
| May | 85°F | 69°F | 76.8°F | 3.31 | 6 | 2 | <1 | 13 h 30 min |
| June | 89°F | 74°F | 81.5°F | 6.16 | 8 | 17 | <1 | 14 h |
| July | 91°F | 74°F | 82.6°F | 2.88 | 5 | 25 | <1 | 13 h 50 min |
| August | 92°F | 74°F | 82.8°F | 3.56 | 7 | 28 | <1 | 13 h 10 min |
| September | 89°F | 71°F | 80.0°F | 4.50 | 11 | 16 | <1 | 12 h 20 min |
| October | 83°F | 61°F | 72.2°F | 4.68 | 8 | 2 | <1 | 11 h 30 min |
| November | 75°F | 53°F | 63.6°F | 3.05 | 9 | <1 | 2 | 10 h 50 min |
| December | 68°F | 45°F | 56.3°F | 2.38 | 10 | <1 | 5 | 10 h 20 min |
| Year (annual) | 80°F | 61°F | 70.2°F | 39.60 | 94 | 90 | 17 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 19°C | 5°C | 12.1°C | 73 mm |
| February | 21°C | 9°C | 14.7°C | 45 mm |
| March | 23°C | 13°C | 18.1°C | 52 mm |
| April | 26°C | 16°C | 21.3°C | 60 mm |
| May | 29°C | 21°C | 24.9°C | 84 mm |
| June | 32°C | 23°C | 27.5°C | 156 mm |
| July | 33°C | 24°C | 28.1°C | 73 mm |
| August | 33°C | 23°C | 28.2°C | 90 mm |
| September | 32°C | 22°C | 26.7°C | 114 mm |
| October | 28°C | 16°C | 22.3°C | 119 mm |
| November | 24°C | 11°C | 17.6°C | 77 mm |
| December | 20°C | 7°C | 13.5°C | 60 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023906; 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.
Which months are mildest at Port Aransas (32 mi NNE)?
Normal highs sit between 65°F and 85°F in January, February, March, April, May, October, November and December. Of those, April has the fewest days with rain (6).
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 USW00023906.
When is the last frost at Port Aransas (32 mi NNE)?
In Port Aransas (32 mi NNE), the last spring frost (32°F) comes after February 20 in half of years and after March 16 in one year in ten; the first autumn frost comes before December 2 in half of years and before November 7 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 16; 9 in 10 after January 23
- First autumn frost, half of years before
- December 21 year in 10 before November 7; 9 in 10 before December 29
NOAA puts the median frost-free season at 284 days, and the season without a hard freeze (28°F) at 316 days.
A hard freeze (28°F) comes after February 4 in half of springs and before December 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Port Aransas (32 mi NNE) in zone 9b in ZIP code 77950, the nearest ZIP area.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00023906; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Port Aransas (32 mi NNE)?
In a normal year in Port Aransas (32 mi NNE), 90 days a year reach 90°F (1 of them 100°F or more), 17 nights fall to 32°F or colder and 94 days bring measurable precipitation.
- Days at 90°F or more
- 90a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 17a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 94a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00023906.
How sunny is it at Port Aransas (32 mi NNE)?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Port Aransas (32 mi NNE), 4.9 kWh per square metre a day. August is the sunniest month (87%) and February the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 3.0 |
| February | 68% | 3.5 |
| March | 73% | 4.6 |
| April | 76% | 5.5 |
| May | 82% | 6.2 |
| June | 86% | 6.7 |
| July | 86% | 6.5 |
| August | 87% | 6.3 |
| September | 82% | 5.2 |
| October | 84% | 4.6 |
| November | 79% | 3.5 |
| December | 71% | 2.7 |
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 many heating and cooling degree days does Port Aransas (32 mi NNE) record?
A normal year at Port Aransas (32 mi NNE) brings 1,192 heating degree days, 78% fewer than the median U.S. place (5,373), and 3,123 cooling degree days, 3.4 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 7,562 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 363 | 16 |
| February | 219 | 34 |
| March | 111 | 97 |
| April | 29 | 187 |
| May | 3 | 367 |
| June | 0 | 496 |
| July | 0 | 544 |
| August | 0 | 553 |
| September | 0 | 451 |
| October | 26 | 250 |
| November | 140 | 98 |
| December | 300 | 29 |
| Year (annual) | 1,192 | 3,123 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023906. 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.
Have recent years at Port Aransas (32 mi NNE) been warmer than normal?
2025 averaged 71.9°F, 1.7°F above the 1991-2020 normal of 70.2°F. 2 of the 2 complete years since 2024 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 72.4°F | +2.2°F | 32.21 |
| 2025 | 71.9°F | +1.7°F | 32.34 |
Source: observed years: ACIS, station USW00023906. A year counts only with all twelve months complete.
How does Port Aransas (32 mi NNE)'s climate compare?
Port Aransas (32 mi NNE) is warmer than 258 of the 321 places with their own NOAA record in Texas, and wetter than 227. Across the 7,247 U.S. stations with normals, its annual mean of 70.2°F is warmer than 95%.
In the Köppen classification computed from these normals, Port Aransas (32 mi NNE) 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.
Questions about Port Aransas (32 mi NNE)'s climate
What is the coldest month at Port Aransas (32 mi NNE)?
January, with a normal high of 66°F and a normal low of 42°F. The warmest is August (92°F by day, 74°F at night).
What is the rainiest month at Port Aransas (32 mi NNE)?
June, with 6.16 in of precipitation in a normal year; the driest is February with 1.78 in.
What plant hardiness zone is Port Aransas (32 mi NNE) in?
The USDA's 2023 map puts Port Aransas (32 mi NNE) in zone 9b in ZIP code 77950, the nearest ZIP area.
How late can frost come at Port Aransas (32 mi NNE)?
In half of years the last 32°F night comes after February 20; in one year in ten it comes after March 16. Waiting until March 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Aransas Wildlife Refuge, TX1 miles from this station, 70.2°F a year
- Austwell, TX6 miles from this station, 70.8°F a year
- Rockport, TX21 miles from this station, 73.0°F a year
- Port O'Connor, TX25 miles from this station, 71.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made