Rockport Aransas County, TX Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
- Warmer national band · Avg annual temp
- 73°FAnnual mean temperature: 73.0°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
- Drier than median · Annual precip
- 28.4"Annual precipitation: 28.4 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
30-year climate normals (1991-2020) from Rockport Aransas County's primary NOAA station, ROCKPORT ARANSAS CO AP.
The climate verdict for Rockport Aransas County
Warm-season cooling demand defines Rockport Aransas County, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 73°F. August is the warmest month at 86°F and January the coldest at 57°F.
- 73°F
- average temperature, NOAA 1991-2020 normal
- 28.4"
- precipitation, annual total
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
73°F (23°C)Annual mean temperature: 73.0°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
Warmer national band
Avg High
80°FAnnual average daily high: 80.1°F. National station-mapped location corpus median: 63.8°F across 6,861 measured records.
Warmer national band
Avg Low
66°FAnnual average daily low: 65.9°F. National station-mapped location corpus median: 41.1°F across 6,861 measured records.
Warmer national band
Annual Precip
28.4"Annual precipitation: 28.4 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
Drier than median
Rockport Aransas County 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 · model supports three NOAA data products
Rockport Aransas County's broader climate profile: 80/100
A percentile-benchmarked model across annual, daily, and hourly climate normals. This record uses 2 measured NOAA products; every input remains inspectable.
PlainClimate-derived, not an official NOAA rating. This separate index does not replace the established Comfort Score used in rankings, and it is not a verdict on safety, health, housing, culture, or overall quality of life.
-
Annual temperature balance
73.0°F · 5.5° from 67.5°F
83/100 B · weight 25%Distance from a 67.5°F annual mean; smaller is better.
NOAA annual/seasonal normals ·
ANN-TAVG-NORMAL -
Precipitation balance
28.4 in · 6.6 from 35 in
77/100 B · weight 15%Distance from 35 annual inches; smaller is better.
NOAA annual/seasonal normals ·
ANN-PRCP-NORMAL -
Snowfall burden
Not measured
N/A N/A · weight 10%Not scored; its 10% weight redistributes across measured dimensions.
Annual snowfall; lower is better in this formula.
NOAA annual/seasonal normals ·
ANN-SNOW-NORMAL -
Frost-free season
Not measured
N/A N/A · weight 10%Not scored; its 10% weight redistributes across measured dimensions.
Days between NOAA 50% spring and fall freeze dates; longer is better.
NOAA annual/seasonal normals ·
ANN-TMIN-PRBLST-T32FP50 + ANN-TMIN-PRBFST-T32FP50 -
Normal heat + freeze calendar
93 calendar days
78/100 B · weight 25%Normal high ≥90°F days plus normal low ≤32°F days; lower is better.
NOAA daily multivariate normals ·
DLY-TMAX-NORMAL + DLY-TMIN-NORMAL (derived counts) -
Summer moisture balance
Not measured
N/A N/A · weight 15%Not scored; its 15% weight redistributes across measured dimensions.
June–August mean dew point distance from 52.5°F; smaller is better.
NOAA hourly normals ·
HLY-DEWP-NORMAL
Live national benchmark table and calculation
Each raw metric is linearly interpolated across its live p10, p25, p50, p75, and p90 breakpoints. Equal-valued breakpoints collapse to their mean percentile; values outside p10-p90 extrapolate toward 0 or 100 using the nearest non-flat segment, then clamp to that range. Scores favor the direction shown, then combine by the listed weights. Missing dimensions are removed from both the weighted sum and available weight before normalization.
| Dimension | Weight | Better | p10 | p25 | p50 | p75 | p90 | n |
|---|---|---|---|---|---|---|---|---|
| Annual temperature balance | 25% | Lower | 3.4 | 7.9 | 15.3 | 21 | 25.2 | 6,861 |
| Precipitation balance | 15% | Lower | 2.7 | 7.1 | 14.2 | 20.9 | 25.7 | 6,352 |
| Snowfall burden | 10% | Lower | 0 | 2.1 | 18.9 | 42.7 | 69.8 | 4,098 |
| Frost-free season | 10% | Higher | 127 | 150 | 180 | 215 | 253 | 6,446 |
| Normal heat + freeze calendar | 25% | Lower | 56 | 102 | 145 | 180 | 207 | 6,859 |
| Summer moisture balance | 15% | Lower | 2.7 | 6.1 | 9.3 | 14.8 | 18.4 | 417 |
Grades: A 85–100 · B 70–84 · C 55–69 · D 40–54 · F below 40.
Source: NOAA NCEI U.S. Climate Normals v1.0.1 (1991–2020). This record uses NOAA annual/seasonal normals and NOAA daily multivariate normals; the model also supports hourly normals where published · data updated 2026-08-04. Full methodology and limits.
How Rockport Aransas County compares with its closest stations
Against the 6 closest stations in the record, Rockport Aransas County averages 73°F a year, warmer than Rockport, TX (72°F) and Port Aransas, TX (70°F).
Corpus-relative placement
Where Rockport Aransas County sits across the climate record
These comparisons place this primary-station normal among station-mapped locations with the same NOAA 1991–2020 fields.
- Annual temperature
- Warmer than 97%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 38%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 8%
- of 6,861 complete location-year normals.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 65°F (19°C) | 49°F (9°C) | 57°F (14°C) | 1.7" | 1.3 | 0.0 |
| February | 69°F (20°C) | 54°F (12°C) | 61°F (16°C) | 1.1" | 0.5 | 0.0 |
| March | 74°F (23°C) | 60°F (15°C) | 67°F (19°C) | 1.9" | 0.1 | 0.3 |
| April | 80°F (27°C) | 66°F (19°C) | 73°F (23°C) | 1.5" | 0.0 | 1.0 |
| May | 85°F (30°C) | 73°F (23°C) | 79°F (26°C) | 3.2" | 0.0 | 3.5 |
| June | 90°F (32°C) | 78°F (26°C) | 84°F (29°C) | 3.9" | 0.0 | 21.1 |
| July | 91°F (33°C) | 79°F (26°C) | 85°F (30°C) | 2.5" | 0.0 | 27.2 |
| August | 92°F (34°C) | 79°F (26°C) | 86°F (30°C) | 1.5" | 0.0 | 29.3 |
| September | 89°F (32°C) | 75°F (24°C) | 82°F (28°C) | 4.2" | 0.0 | 18.8 |
| October | 84°F (29°C) | 68°F (20°C) | 76°F (24°C) | 2.8" | 0.0 | 3.6 |
| November | 75°F (24°C) | 58°F (15°C) | 67°F (19°C) | 2.4" | 0.0 | 0.0 |
| December | 68°F (20°C) | 51°F (11°C) | 59°F (15°C) | 1.7" | 0.7 | 0.0 |
The year, day by day
The year in Rockport Aransas County runs from a mild 48°F around January 5 to 93°F at the peak near August 9, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 11 through September 11, covering 93 dates. The broader mild season, normal highs of 70°F or more, runs February 23 to December 2.
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 48°F around January 5.
Where the wet dates fall
The likeliest wet date is September 12, when 28% of years recorded at least a hundredth of an inch. The driest is July 31 at 13%. Summed across the calendar, that is about 76 wet dates a year.
The widest day
December 26 carries the biggest normal gap between afternoon and dawn, 17°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Rockport Aransas County.
Where Rockport Aransas County Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 93 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 17°F.
Standing computed against the distribution of 6,860 NOAA 1991–2020 normals stations in the PlainClimate database; only nationally notable standings are shown.
Monthly Precipitation
Average monthly rainfall
7.7 days with precipitation
6.2 days with precipitation
6.3 days with precipitation
4.6 days with precipitation
4.8 days with precipitation
6.5 days with precipitation
5.3 days with precipitation
4.5 days with precipitation
9.0 days with precipitation
7.4 days with precipitation
7.1 days with precipitation
6.6 days with precipitation
Rockport Aransas County spreads its precipitation across the year
Neither half of the year dominates here: June through August take 28% of the annual total and December through February 16%, with neither reaching the 35% that would mark a distinct wet season. Rockport Aransas County has no dry season to plan around, though it does carry an unusually narrow 28.7°F seasonal spread.
The gap between the wettest and driest month still matters: September averages 4.2" and February 1.1". The three wettest months together take 40% 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 Rockport Aransas County, it arrives in quantity
28.4" of precipitation falls across only about 76 wet days here, averaging 0.37 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 76 a year, 21% of all days
- Average depth per wet day
- 0.37 inches
- Most wet days
- September, about 9
- Fewest wet days
- August, about 5
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
January 1
50% probability date
Last Spring Freeze
January 23
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
826
Higher = more heating needed
Cooling Degree Days
3,774
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Places with a similar climate profile
NOAA 1991–2020 annual normals connect this location to non-geographic peers. Temperature peers use annual mean temperature; energy peers use both heating and cooling degree days.
Closest annual-temperature peers
Nearby station-mapped locations
What Rockport Aransas County's climate means for you
Rockport Aransas County runs 73°F a year - peaking in August, coldest in January.
- Air conditioning drives the bills rather than the furnace: 3,774 cooling degree days against 826 for heating.
- See how Rockport Aransas County lines up against the rest of Texas and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Rockport Aransas County's climate pattern fits together
cooling led · moderate · low swing
Warm-season load persists through a relatively even calendar in Rockport Aransas County. Cooling totals 3,774 degree days, more than double the 826 heating measure, and the 28.7°F seasonal range is compact rather than sharply divided.
Rockport Aransas County's 28.4 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
Temperature varies within a narrow 28.7°F band across the normal year. August and January mark the typical warm and cold ends of the calendar. The annual average is 73°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A frost-free growing-season length is not available for Rockport Aransas County. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Rockport Aransas County's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. They are descriptive ranges, not an official NOAA classification or a forecast for any specific year.
The year in four calendar signals
- Warmest normal
- August
- At 86°F (30°C) this is a genuinely hot month, in the top third of US stations, and the daily average understates afternoon highs.
- Coldest normal
- January
- The coldest month still averages 57°F (14°C), above freezing, so this calendar has no hard winter.
- Rainfall rhythm
- September to February
- September is typically wettest; February is driest.
- Mild-temperature window
- January through December
- Monthly means sit between 55°F and 75°F in this window. Freezing days are still reported from January through December.
Frequently Asked Questions
What is the average temperature in Rockport Aransas County, TX? ▼
How much rain does Rockport Aransas County get? ▼
How many days above 90°F does Rockport Aransas County get? ▼
How much energy does heating and cooling require in Rockport Aransas County? ▼
Where does this Rockport Aransas County climate data come from? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Rockport Aransas County's primary station: ROCKPORT ARANSAS CO AP (USW00012972). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. The reproducible method is an exact normalized name-and-state match; unresolved is an upper bound on facilities because spelling variants can be missed.
Related
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.