30-year climate normals

Zavala County Climate and Weather Averages

Hottest month — August

99.1°

average daily high. The coldest month is January, averaging a low of 43.9°F.

Zavala County gets 19.46" of precipitation a year, and 33% of it falls in Jul, Aug, Sep.

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	66.8°	43.9°	1.04"
February	72.2°	48.5°	0.85"
March	78.9°	55.1°	1.70"
April	86.1°	61.8°	1.31"
May	91.1°	69.6°	2.23"
June	96.4°	74.6°	2.07"
July	97.3°	75.5°	2.07"
August	99.1°	75.8°	1.92"
September	92.9°	71.5°	2.43"
October	85.0°	63.6°	2.00"
November	74.1°	53.2°	1.00"
December	67.7°	45.1°	0.84"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 33% falling in the wettest three months (Jul, Aug, Sep).

January 1.04"

February 0.85"

March 1.70"

April 1.31"

May 2.23"

June 2.07"

July 2.07"

August 1.92"

September 2.43"

October 2.00"

November 1.00"

December 0.84"

Annual total 19.46"

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 3,838

Heating degree days How much heating the climate demands 990

Approximate annual cooling cost At 16.44¢/kWh, Texas average $631

Approximate annual electric heating cost Lower where heating is gas rather than electric $57

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 Zavala County, where electricity is one line of eight.

Common questions

What is the weather like in Zavala County?

Zavala County averages a high of 99.1°F in August and a low of 43.9°F in January. Annual precipitation is 19.46 inches, with essentially no snow.

When is the rainy season in Zavala County?

The wettest stretch is Jul, Aug, Sep, which accounts for 33% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Zavala County?

The average daily high in August, the hottest month, is 99.1°F. That drives 3,838 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Zavala County?

Effectively no. Measurable snowfall is rare in Zavala County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CRYSTAL CITY, TX US (USC00412160), 13.5 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.