30-year climate normals

DeWitt County Climate and Weather Averages

Hottest month — August

98.3°

average daily high. The coldest month is January, averaging a low of 42.0°F.

DeWitt County gets 34.22" of precipitation a year, and 32% of it falls in Apr, May, Jun.

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	66.3°	42.0°	2.33"
February	68.9°	45.5°	1.54"
March	75.2°	52.3°	2.76"
April	82.1°	58.7°	2.77"
May	88.6°	67.4°	4.41"
June	94.1°	72.7°	3.92"
July	96.9°	74.3°	2.44"
August	98.3°	74.1°	2.59"
September	92.9°	69.3°	3.57"
October	85.9°	59.8°	3.27"
November	75.3°	50.0°	2.35"
December	67.4°	43.5°	2.27"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 32% falling in the wettest three months (Apr, May, Jun).

January 2.33"

February 1.54"

March 2.76"

April 2.77"

May 4.41"

June 3.92"

July 2.44"

August 2.59"

September 3.57"

October 3.27"

November 2.35"

December 2.27"

Annual total 34.22"

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 3,454

Heating degree days How much heating the climate demands 1,275

Approximate annual cooling cost At 16.44¢/kWh, Texas average $568

Approximate annual electric heating cost Lower where heating is gas rather than electric $73

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 DeWitt County, where electricity is one line of eight.

Common questions

What is the weather like in DeWitt County?

DeWitt County averages a high of 98.3°F in August and a low of 42.0°F in January. Annual precipitation is 34.22 inches, with essentially no snow.

When is the rainy season in DeWitt County?

The wettest stretch is Apr, May, Jun, which accounts for 32% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in DeWitt County?

The average daily high in August, the hottest month, is 98.3°F. That drives 3,454 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in DeWitt County?

Effectively no. Measurable snowfall is rare in DeWitt County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CUERO, TX US (USC00412173), 1.2 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.