Ector County climate

Ector County Weather in December

NOAA 1991-2020 normals for Penwell, 15.5 km from Ector County

Average highs run from 63°F on December 1 to 59°F on December 31, and lows from 36°F to 32°F. Normal precipitation for the month is 0.73 in over about 2 wet days.

December day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Ector County, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
61°F
Average low
33°F
Precipitation
0.73 in
Snowfall
0.6 in
Record high
84°FDec 20, 2025
Record low
8°FDec 8, 2005
Chance of a freeze
100%
Daylight
10 h 13 min to 10 h 06 min
Cloud cover
47%
Humidity
57%
Dew point
27°F
Wind
9.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Dec 163°F36°F80°F 201225°F 20047%1%
Dec 263°F36°F83°F 200523°F 20067%1%
Dec 363°F35°F82°F 202126°F 20047%1%
Dec 463°F35°F78°F 200718°F 20097%1%
Dec 562°F35°F80°F 202122°F 20087%1%
Dec 662°F35°F79°F 201217°F 20117%1%
Dec 762°F34°F78°F 200714°F 20057%1%
Dec 862°F34°F78°F 20238°F 20057%1%
Dec 962°F34°F76°F 202120°F 20057%1%
Dec 1061°F34°F81°F 202020°F 20087%1%
Dec 1161°F34°F80°F 201524°F 20097%1%
Dec 1261°F34°F73°F 200419°F 19987%1%
Dec 1361°F33°F75°F 202122°F 20037%1%
Dec 1461°F33°F79°F 201021°F 20207%1%
Dec 1561°F33°F80°F 201020°F 20057%1%
Dec 1660°F33°F82°F 201620°F 20087%1%
Dec 1760°F33°F79°F 201617°F 20167%1%
Dec 1860°F33°F75°F 201214°F 20167%1%
Dec 1960°F33°F77°F 201020°F 20167%1%
Dec 2060°F32°F84°F 202523°F 20127%1%
Dec 2160°F32°F81°F 201018°F 19987%1%
Dec 2260°F32°F77°F 202112°F 20227%1%
Dec 2360°F32°F82°F 202111°F 20227%1%
Dec 2460°F32°F84°F 202115°F 20047%1%
Dec 2560°F32°F81°F 202519°F 19987%1%
Dec 2659°F32°F84°F 202119°F 20127%1%
Dec 2759°F32°F83°F 202520°F 20097%1%
Dec 2859°F32°F77°F 201621°F 20097%1%
Dec 2959°F32°F77°F 202420°F 20127%1%
Dec 3059°F32°F78°F 202421°F 20147%1%
Dec 3159°F32°F77°F 200517°F 20147%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Ector County, in percent, and of at least 0.1 inch of snowfall.024681102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CST).

December 1
sunrise 7:33 AM, sunset 5:46 PM
December 31
sunrise 7:50 AM, sunset 5:56 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00416932 (Penwell), public domain. Records: NOAA GHCN-Daily, station USW00003031, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.