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United States › Texas › Cameron County › Climate Station PORT ISABEL CAMERON AP, TX US Distance 9.3 mi Normals 1991–2020

30-year climate normals

Cameron County Climate and Weather Averages

Hottest month — August

93.4°

average daily high. The coldest month is January, averaging a low of 51.9°F.

Cameron County gets 23.25" of precipitation a year, and 43% of it falls in Sep, Oct, Nov.

Temperature through the year

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

60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 70.2° 51.9° 0.96"
February 73.5° 56.0° 1.16"
March 78.1° 61.6° 1.11"
April 83.0° 67.5° 1.28"
May 88.0° 73.2° 2.13"
June 91.6° 76.9° 2.68"
July 92.4° 77.8° 1.44"
August 93.4° 77.4° 1.33"
September 90.4° 74.9° 5.26"
October 85.3° 68.6° 2.73"
November 78.0° 60.7° 1.91"
December 72.1° 53.9° 1.26"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 43% falling in the wettest three months (Sep, Oct, Nov).

January 0.96"
February 1.16"
March 1.11"
April 1.28"
May 2.13"
June 2.68"
July 1.44"
August 1.33"
September 5.26"
October 2.73"
November 1.91"
December 1.26"
Annual total 23.25"

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 4,140
Heating degree days How much heating the climate demands 527
Approximate annual cooling cost At 16.44¢/kWh, Texas average $681
Approximate annual electric heating cost Lower where heating is gas rather than electric $30

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 Cameron County, where electricity is one line of eight.

Common questions

What is the weather like in Cameron County?

Cameron County averages a high of 93.4°F in August and a low of 51.9°F in January. Annual precipitation is 23.25 inches, with essentially no snow.

When is the rainy season in Cameron County?

The wettest stretch is Sep, Oct, Nov, which accounts for 43% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Cameron County?

The average daily high in August, the hottest month, is 93.4°F. That drives 4,140 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Cameron County?

Effectively no. Measurable snowfall is rare in Cameron County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station PORT ISABEL CAMERON AP, TX US (USW00012957), 9.3 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.