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United States › Texas › Castro County › Climate Station DIMMITT 2 N, TX US Distance 4.7 mi Normals 1991–2020

30-year climate normals

Castro County Climate and Weather Averages

Hottest month — July

91.7°

average daily high. The coldest month is January, averaging a low of 22.3°F.

Castro County gets 21" of precipitation a year and 9.8" of snow, and 43% of it falls in Jun, Jul, Aug.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 51.4° 22.3° 0.57" 1.9"
February 55.8° 24.6° 0.54" 2.1"
March 64.1° 31.4° 1.03" 1.4"
April 72.3° 38.6° 1.25" 0.1"
May 80.9° 49.4° 2.64" 0.0"
June 89.7° 59.9° 3.59" 0.0"
July 91.7° 63.4° 2.35" 0.0"
August 90.4° 62.1° 3.10" 0.0"
September 83.3° 54.5° 2.41" 0.0"
October 72.8° 42.5° 2.10" 0.4"
November 60.7° 30.7° 0.70" 1.1"
December 51.4° 23.5° 0.72" 2.8"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 43% falling in the wettest three months (Jun, Jul, Aug).

January 0.57"
February 0.54"
March 1.03"
April 1.25"
May 2.64"
June 3.59"
July 2.35"
August 3.10"
September 2.41"
October 2.10"
November 0.70"
December 0.72"
Annual total 21"

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 1,340
Heating degree days How much heating the climate demands 4,235
Approximate annual cooling cost At 16.44¢/kWh, Texas average $220
Approximate annual electric heating cost Lower where heating is gas rather than electric $244

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 Castro County, where electricity is one line of eight.

Common questions

What is the weather like in Castro County?

Castro County averages a high of 91.7°F in July and a low of 22.3°F in January. Annual precipitation is 21 inches, including 9.8 inches of snow.

When is the rainy season in Castro County?

The wettest stretch is Jun, Jul, Aug, which accounts for 43% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Castro County?

The average daily high in July, the hottest month, is 91.7°F. That drives 1,340 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Castro County?

Yes. Castro County averages 9.8 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station DIMMITT 2 N, TX US (USC00412464), 4.7 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.