30-year climate normals

Aransas County Climate and Weather Averages

Hottest month — August

92.4°

average daily high. The coldest month is January, averaging a low of 48.9°F.

Aransas County gets 28.38" of precipitation a year, and 34% of it falls in May, Jun, Jul.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	65.3°	48.9°	1.72"
February	68.7°	53.5°	1.05"
March	74.1°	59.5°	1.95"
April	79.7°	66.3°	1.46"
May	85.1°	73.3°	3.20"
June	90.1°	78.2°	3.90"
July	91.2°	79.4°	2.51"
August	92.4°	79.2°	1.50"
September	89.3°	75.2°	4.18"
October	83.6°	68.0°	2.82"
November	74.6°	58.4°	2.43"
December	67.5°	50.9°	1.66"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 34% falling in the wettest three months (May, Jun, Jul).

January 1.72"

February 1.05"

March 1.95"

April 1.46"

May 3.20"

June 3.90"

July 2.51"

August 1.50"

September 4.18"

October 2.82"

November 2.43"

December 1.66"

Annual total 28.38"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 3,774

Heating degree days How much heating the climate demands 826

Approximate annual cooling cost At 16.44¢/kWh, Texas average $620

Approximate annual electric heating cost Lower where heating is gas rather than electric $48

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Aransas County, where electricity is one line of eight.

Common questions

What is the weather like in Aransas County?

Aransas County averages a high of 92.4°F in August and a low of 48.9°F in January. Annual precipitation is 28.38 inches, with essentially no snow.

When is the rainy season in Aransas County?

The wettest stretch is May, Jun, Jul, which accounts for 34% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Aransas County?

The average daily high in August, the hottest month, is 92.4°F. That drives 3,774 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Aransas County?

Effectively no. Measurable snowfall is rare in Aransas County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station ROCKPORT ARANSAS CO AP, TX US (USW00012972), 5.5 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Texas residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.