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United States › Texas › Willacy County › Climate Station HARLINGEN RIO GRANDE AP, TX US Distance 17.9 mi Normals 1991–2020

30-year climate normals

Willacy County Climate and Weather Averages

Hottest month — August

97.2°

average daily high. The coldest month is January, averaging a low of 49.8°F.

Willacy County gets 24.04" of precipitation a year, and 41% of it falls in Aug, Sep, Oct.

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 71.7° 49.8° 1.05"
February 75.9° 53.9° 0.73"
March 81.0° 59.4° 1.31"
April 86.5° 65.2° 1.46"
May 91.4° 71.0° 2.50"
June 95.0° 74.6° 2.26"
July 96.2° 75.3° 1.76"
August 97.2° 75.3° 1.92"
September 92.2° 72.5° 5.31"
October 87.6° 65.6° 2.71"
November 79.3° 57.4° 1.81"
December 73.2° 51.6° 1.22"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 41% falling in the wettest three months (Aug, Sep, Oct).

January 1.05"
February 0.73"
March 1.31"
April 1.46"
May 2.50"
June 2.26"
July 1.76"
August 1.92"
September 5.31"
October 2.71"
November 1.81"
December 1.22"
Annual total 24.04"

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 4,220
Heating degree days How much heating the climate demands 569
Approximate annual cooling cost At 16.44¢/kWh, Texas average $694
Approximate annual electric heating cost Lower where heating is gas rather than electric $33

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 Willacy County, where electricity is one line of eight.

Common questions

What is the weather like in Willacy County?

Willacy County averages a high of 97.2°F in August and a low of 49.8°F in January. Annual precipitation is 24.04 inches, with essentially no snow.

When is the rainy season in Willacy County?

The wettest stretch is Aug, Sep, Oct, which accounts for 41% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Willacy County?

The average daily high in August, the hottest month, is 97.2°F. That drives 4,220 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Willacy County?

Effectively no. Measurable snowfall is rare in Willacy County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station HARLINGEN RIO GRANDE AP, TX US (USW00012904), 17.9 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.