30-year climate normals

Liberty County Climate and Weather Averages

Hottest month — August

94.2°

average daily high. The coldest month is January, averaging a low of 41.2°F.

Liberty County gets 62.82" of precipitation a year, and 30% 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.

Month	Avg high	Avg low	Precip
January	64.0°	41.2°	5.12"
February	67.1°	45.1°	3.90"
March	73.5°	51.6°	3.98"
April	79.3°	57.6°	4.60"
May	85.8°	65.5°	5.54"
June	91.1°	71.7°	6.05"
July	93.4°	73.6°	5.02"
August	94.2°	73.5°	5.52"
September	90.0°	68.9°	6.85"
October	82.8°	58.8°	6.34"
November	72.4°	49.2°	4.72"
December	65.3°	42.6°	5.18"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 30% falling in the wettest three months (Aug, Sep, Oct).

January 5.12"

February 3.90"

March 3.98"

April 4.60"

May 5.54"

June 6.05"

July 5.02"

August 5.52"

September 6.85"

October 6.34"

November 4.72"

December 5.18"

Annual total 62.82"

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 2,953

Heating degree days How much heating the climate demands 1,434

Approximate annual cooling cost At 16.44¢/kWh, Texas average $485

Approximate annual electric heating cost Lower where heating is gas rather than electric $83

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 Liberty County, where electricity is one line of eight.

Common questions

What is the weather like in Liberty County?

Liberty County averages a high of 94.2°F in August and a low of 41.2°F in January. Annual precipitation is 62.82 inches, with essentially no snow.

When is the rainy season in Liberty County?

The wettest stretch is Aug, Sep, Oct, which accounts for 30% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Liberty County?

The average daily high in August, the hottest month, is 94.2°F. That drives 2,953 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Liberty County?

Effectively no. Measurable snowfall is rare in Liberty County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LIBERTY, TX US (USC00415196), 7.5 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.