30-year climate normals

Webb County Climate and Weather Averages

Hottest month — August

100.9°

average daily high. The coldest month is January, averaging a low of 46.5°F.

Webb County gets 21.35" of precipitation a year, and 35% 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	68.4°	46.5°	0.90"
February	74.4°	50.6°	0.83"
March	80.9°	57.5°	1.60"
April	88.1°	64.1°	1.47"
May	93.2°	70.9°	2.76"
June	98.7°	75.3°	2.50"
July	99.9°	76.3°	2.11"
August	100.9°	76.8°	1.68"
September	93.5°	72.4°	3.64"
October	87.1°	65.4°	1.75"
November	77.0°	55.6°	1.04"
December	69.0°	48.1°	1.07"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 35% falling in the wettest three months (Jul, Aug, Sep).

January 0.90"

February 0.83"

March 1.60"

April 1.47"

May 2.76"

June 2.50"

July 2.11"

August 1.68"

September 3.64"

October 1.75"

November 1.04"

December 1.07"

Annual total 21.35"

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 4,341

Heating degree days How much heating the climate demands 811

Approximate annual cooling cost At 16.44¢/kWh, Texas average $714

Approximate annual electric heating cost Lower where heating is gas rather than electric $47

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 Webb County, where electricity is one line of eight.

Common questions

What is the weather like in Webb County?

Webb County averages a high of 100.9°F in August and a low of 46.5°F in January. Annual precipitation is 21.35 inches, with essentially no snow.

When is the rainy season in Webb County?

The wettest stretch is Jul, Aug, Sep, which accounts for 35% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Webb County?

The average daily high in August, the hottest month, is 100.9°F. That drives 4,341 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Webb County?

Effectively no. Measurable snowfall is rare in Webb County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LAREDO AFB, TX US (USW00012907), 17.5 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.