Cameron County climate

Cameron County Weather in December

NOAA 1991-2020 normals for Port Isabel Cameron AP, 10.8 km from Cameron County

Average highs run from 75°F on December 1 to 70°F on December 31, and lows from 57°F to 52°F. Normal precipitation for the month is 1.26 in over about 7 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 Cameron County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
72°F
Average low
54°F
Precipitation
1.26 in
Snowfall
0.2 in
Record high
91°FDec 23, 2015
Record low
28°FDec 25, 2004
Chance of a freeze
14%
Daylight
10 h 38 min to 10 h 32 min
Cloud cover
67%
Humidity
75%
Dew point
56°F
Wind
11.4 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 175°F57°F85°F 201238°F 202025%0%
Dec 275°F57°F84°F 200742°F 200925%0%
Dec 374°F57°F86°F 201246°F 200025%0%
Dec 474°F56°F86°F 201237°F 200925%0%
Dec 574°F56°F85°F 201730°F 200925%0%
Dec 674°F56°F85°F 202141°F 199924%0%
Dec 774°F56°F84°F 199835°F 201124%0%
Dec 873°F56°F85°F 201232°F 201724%0%
Dec 973°F55°F85°F 200834°F 201724%0%
Dec 1073°F55°F84°F 201540°F 201724%0%
Dec 1173°F55°F82°F 200037°F 200824%0%
Dec 1273°F55°F84°F 202538°F 200024%0%
Dec 1373°F54°F84°F 201635°F 200024%0%
Dec 1472°F54°F89°F 201942°F 199824%0%
Dec 1572°F54°F85°F 201240°F 201324%0%
Dec 1672°F54°F89°F 201939°F 201324%0%
Dec 1772°F54°F83°F 201635°F 200324%0%
Dec 1872°F53°F86°F 202538°F 200324%0%
Dec 1972°F53°F84°F 201237°F 200024%0%
Dec 2071°F53°F85°F 202541°F 200024%0%
Dec 2171°F53°F86°F 200741°F 201824%0%
Dec 2271°F53°F84°F 201735°F 199825%0%
Dec 2371°F52°F91°F 201535°F 199825%0%
Dec 2471°F52°F86°F 201531°F 200425%0%
Dec 2571°F52°F88°F 201228°F 200425%0%
Dec 2671°F52°F85°F 201531°F 200425%0%
Dec 2770°F52°F85°F 202539°F 200125%0%
Dec 2870°F52°F87°F 202436°F 200025%0%
Dec 2970°F52°F87°F 202138°F 199925%0%
Dec 3070°F52°F85°F 202439°F 200025%0%
Dec 3170°F52°F87°F 201043°F 202026%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cameron County, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CST).

December 1
sunrise 7:00 AM, sunset 5:38 PM
December 31
sunrise 7:17 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 USW00012957 (Port Isabel Cameron AP), public domain. Records: NOAA GHCN-Daily, station USW00012957, 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.