Rockport, Texas climate: Normal weather by month, frost dates and records
Rockport's normal year runs from 49°F January nights to 92°F August afternoons, with 28.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 22.8°C, January lows of 9°C, August highs of 34°C, 721 mm of precipitation a year.
- NOAA stationRockport Aransas County Airport
- Station IDUSW00012972
- Location28.08°N 97.05°W
- Elevation22 ft (7 m)
- From the center2 miles
- Population11,069
On October 23, the normal high in Rockport is 82°F and the normal low 66°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rockport.
- Jan 65° 49°
- Feb 69° 54°
- Mar 74° 60°
- Apr 80° 66°
- May 85° 73°
- Jun 90° 78°
- Jul 91° 79°
- Aug 92° 79°
- Sep 89° 75°
- Oct 84° 68°
- Nov 75° 58°
- Dec 68° 51°
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 Rockport each month?
August is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 49°F. The most precipitation falls in September (4.18 in), the least in February (1.05 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 | 65°F | 49°F | 57.1°F | 1.72 | 8 | <1 | 1 | 10 h 30 min |
| February | 69°F | 54°F | 61.1°F | 1.05 | 6 | <1 | 1 | 11 h 10 min |
| March | 74°F | 60°F | 66.8°F | 1.95 | 6 | <1 | <1 | 12 h |
| April | 80°F | 66°F | 73.0°F | 1.46 | 5 | 1 | <1 | 12 h 50 min |
| May | 85°F | 73°F | 79.2°F | 3.20 | 5 | 4 | <1 | 13 h 30 min |
| June | 90°F | 78°F | 84.2°F | 3.90 | 7 | 21 | <1 | 13 h 50 min |
| July | 91°F | 79°F | 85.3°F | 2.51 | 5 | 27 | <1 | 13 h 50 min |
| August | 92°F | 79°F | 85.8°F | 1.50 | 5 | 29 | <1 | 13 h 10 min |
| September | 89°F | 75°F | 82.3°F | 4.18 | 9 | 19 | <1 | 12 h 20 min |
| October | 84°F | 68°F | 75.8°F | 2.82 | 7 | 4 | <1 | 11 h 30 min |
| November | 75°F | 58°F | 66.5°F | 2.43 | 7 | <1 | <1 | 10 h 50 min |
| December | 68°F | 51°F | 59.2°F | 1.66 | 7 | <1 | 1 | 10 h 20 min |
| Year (annual) | 80°F | 66°F | 73.0°F | 28.38 | 76 | 105 | 3 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 19°C | 9°C | 13.9°C | 44 mm |
| February | 20°C | 12°C | 16.2°C | 27 mm |
| March | 23°C | 15°C | 19.3°C | 50 mm |
| April | 27°C | 19°C | 22.8°C | 37 mm |
| May | 30°C | 23°C | 26.2°C | 81 mm |
| June | 32°C | 26°C | 29.0°C | 99 mm |
| July | 33°C | 26°C | 29.6°C | 64 mm |
| August | 34°C | 26°C | 29.9°C | 38 mm |
| September | 32°C | 24°C | 27.9°C | 106 mm |
| October | 29°C | 20°C | 24.3°C | 72 mm |
| November | 24°C | 15°C | 19.2°C | 62 mm |
| December | 20°C | 11°C | 15.1°C | 42 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00012972; 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 Rockport?
Normal highs sit between 65°F and 85°F in January, February, March, April, October, November and December. Of those, April has the fewest days with rain (5).
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 USW00012972.
When is the last frost in Rockport?
In Rockport, the last spring frost (32°F) comes after January 23 in half of years and after February 27 in one year in ten; the first autumn frost comes before January 1 in half of years and before December 4 in one year in ten. A night at 32°F or colder comes at all in 70% of years here (NOAA).
- Last spring frost, half of years after
- January 231 year in 10 after February 27; 9 in 10 after December 19
- First autumn frost, half of years before
- January 11 year in 10 before December 4; 9 in 10 before February 3
NOAA puts the median frost-free season at 347 days, and the season without a hard freeze (28°F) at 365 days.
A hard freeze (28°F) comes after January 8 in half of springs and before January 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Rockport in zone 9b in ZIP code 78382. By the map's own method, the average of each year's coldest night over 1991-2020, Rockport's NOAA station is in zone 9b: the coldest night of a typical year reaches 30°F (22 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 USW00012972; 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.
How hot and how cold does it get in Rockport?
In a normal year in Rockport, 105 days a year reach 90°F (1 of them 100°F or more), 3 nights fall to 32°F or colder and 76 days bring measurable precipitation.
- Days at 90°F or more
- 105a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 3a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 76a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USW00012972.
How sunny is Rockport?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Rockport, 4.8 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 | 71% | 4.5 |
| April | 74% | 5.3 |
| May | 79% | 6.0 |
| June | 85% | 6.7 |
| July | 86% | 6.6 |
| August | 87% | 6.3 |
| September | 81% | 5.2 |
| October | 83% | 4.5 |
| November | 77% | 3.4 |
| December | 70% | 2.8 |
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 Rockport need?
A normal year in Rockport brings 826 heating degree days, 85% fewer than the median U.S. place (5,373), and 3,774 cooling degree days, 4.2 times the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 8,501 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 270 | 25 |
| February | 157 | 47 |
| March | 68 | 124 |
| April | 12 | 252 |
| May | 0 | 440 |
| June | 0 | 574 |
| July | 0 | 629 |
| August | 0 | 645 |
| September | 0 | 518 |
| October | 8 | 343 |
| November | 87 | 132 |
| December | 225 | 45 |
| Year (annual) | 826 | 3,774 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00012972. 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 Rockport been warmer than normal lately?
2021 averaged 73.7°F, 0.7°F above the 1991-2020 normal of 73.0°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.7°F | +0.7°F | 47.75 |
Source: observed years: ACIS, station USW00012972. A year counts only with all twelve months complete.
How does Rockport's climate compare?
Rockport is warmer than 300 of the other 320 places with their own NOAA record in Texas, and wetter than 140. Across the 7,247 U.S. stations with normals, its annual mean of 73.0°F is warmer than 97%.
In the Köppen classification computed from these normals, Rockport 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 Rockport share this climate record?
4 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.
- Fulton, TX1,612 people · 1 mi SE
- Lamar, TX1,282 people · 5 mi NE
- Holiday Beach, TX349 people · 6 mi N
- Bayside, TX280 people · 10 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Rockport's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Rockport. This page uses Rockport Aransas County Airport; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Rockport station USC00417704 | 2 mi S | 8 ft | 72.4°F | 46°F | 92°F | 36.4 | 0 | January 31 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Rockport's climate
What is the coldest month in Rockport?
January, with a normal high of 65°F and a normal low of 49°F. The warmest is August (92°F by day, 79°F at night).
Does it snow in Rockport?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Rockport's NOAA station; Rockport's own co-op station Rockport station records 0 inches of snow in a normal year.
What is the rainiest month in Rockport?
September, with 4.18 in of precipitation in a normal year; the driest is February with 1.05 in.
What plant hardiness zone is Rockport in?
The USDA's 2023 map puts Rockport in zone 9b in ZIP code 78382. By the same method at Rockport's NOAA station, the coldest night of a typical year reaches 30°F (22 years, 1991-2020): zone 9b.
How late can frost come in Rockport?
In half of years the last 32°F night comes after January 23; in one year in ten it comes after February 27. Waiting until February 27 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Rockport in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Port Aransas, TX17 miles from this station, 71.9°F a year
- Port Aransas (32 mi NNE), TX21 miles from this station, 70.2°F a year
- Aransas Wildlife Refuge, TX21 miles from this station, 70.2°F a year
- Welder Wildlife Foundation, TX23 miles from this station, 70.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made