Willacy County climate

Willacy County Weather in December

NOAA 1991-2020 normals for Port Mansfield, 18.8 km from Willacy County

Average highs run from 73°F on December 1 to 68°F on December 31, and lows from 55°F to 50°F. Normal precipitation for the month is 1.25 in over about 6 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 Willacy County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
70°F
Average low
52°F
Precipitation
1.25 in
Snowfall
0.1 in
Record high
90°FDec 14, 2019
Record low
27°FDec 23, 2022
Chance of a freeze
24%
Daylight
10 h 36 min to 10 h 31 min
Cloud cover
67%
Humidity
75%
Dew point
56°F
Wind
11.9 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 173°F55°F88°F 201234°F 201016%0%
Dec 273°F55°F88°F 200740°F 200816%0%
Dec 372°F55°F87°F 201244°F 200016%0%
Dec 472°F55°F88°F 201232°F 200916%0%
Dec 572°F54°F88°F 201729°F 200916%0%
Dec 672°F54°F86°F 202136°F 200217%0%
Dec 772°F54°F87°F 202531°F 201117%0%
Dec 872°F54°F87°F 200733°F 201717%0%
Dec 971°F53°F88°F 196135°F 201017%0%
Dec 1071°F53°F88°F 200737°F 201817%0%
Dec 1171°F53°F87°F 201031°F 200817%0%
Dec 1271°F53°F87°F 200734°F 199718%0%
Dec 1371°F53°F87°F 202034°F 200018%0%
Dec 1471°F52°F90°F 201934°F 199718%0%
Dec 1570°F52°F87°F 201536°F 199718%0%
Dec 1670°F52°F88°F 201932°F 195819%0%
Dec 1770°F52°F85°F 201633°F 200319%0%
Dec 1870°F52°F86°F 201233°F 201919%0%
Dec 1970°F51°F87°F 201732°F 200019%0%
Dec 2070°F51°F88°F 200737°F 200020%0%
Dec 2170°F51°F87°F 201337°F 196020%0%
Dec 2269°F51°F86°F 201733°F 199820%0%
Dec 2369°F51°F89°F 201527°F 202220%0%
Dec 2469°F51°F89°F 201531°F 202220%0%
Dec 2569°F51°F88°F 201532°F 202020%0%
Dec 2669°F50°F86°F 201531°F 200420%0%
Dec 2769°F50°F87°F 200836°F 201021%0%
Dec 2869°F50°F88°F 202431°F 199721%0%
Dec 2968°F50°F89°F 202132°F 199721%0%
Dec 3068°F50°F88°F 202433°F 199721%0%
Dec 3168°F50°F89°F 201039°F 195821%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Willacy County, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CST).

December 1
sunrise 7:01 AM, sunset 5:37 PM
December 31
sunrise 7:18 AM, sunset 5:49 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00417184 (Port Mansfield), public domain. Records: NOAA GHCN-Daily, station USW00012904, 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.