Brownsville climate

Brownsville Weather in December

NOAA 1991-2020 normals for Foster Dam, 24.9 km from Brownsville

Average highs run from 49°F on December 1 to 46°F on December 31, and lows from 36°F to 34°F. Normal precipitation for the month is 8.40 in over about 20 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 Brownsville, in °F, with the record for each date.020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
47°F
Average low
34°F
Precipitation
8.40 in
Record high
65°FDec 1, 2021
Record low
4°FDec 8, 2013
Chance of a freeze
100%
Daylight
9 h 06 min to 8 h 54 min
Cloud cover
75%
Humidity
93%
Dew point
38°F
Wind
6.0 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 149°F36°F65°F 202127°F 202465%0%
Dec 248°F35°F56°F 200826°F 200965%0%
Dec 348°F35°F58°F 202324°F 200965%0%
Dec 448°F35°F62°F 202321°F 201365%0%
Dec 548°F35°F62°F 202316°F 201365%0%
Dec 648°F35°F57°F 201722°F 201365%0%
Dec 747°F35°F62°F 20159°F 201365%0%
Dec 847°F35°F61°F 20154°F 201365%0%
Dec 947°F35°F61°F 20146°F 201365%0%
Dec 1047°F35°F63°F 20259°F 200965%0%
Dec 1147°F34°F62°F 202512°F 200965%0%
Dec 1247°F34°F60°F 201015°F 201365%0%
Dec 1346°F34°F58°F 200622°F 201165%0%
Dec 1446°F34°F59°F 201824°F 201165%0%
Dec 1546°F34°F61°F 202519°F 200865%0%
Dec 1646°F34°F60°F 202511°F 200865%0%
Dec 1746°F34°F60°F 202510°F 200865%0%
Dec 1846°F34°F59°F 202427°F 201965%0%
Dec 1946°F34°F58°F 200927°F 200865%0%
Dec 2046°F34°F58°F 201429°F 201764%0%
Dec 2146°F34°F59°F 202026°F 201764%0%
Dec 2246°F34°F56°F 201323°F 202264%0%
Dec 2346°F34°F57°F 201423°F 202264%0%
Dec 2446°F34°F54°F 201428°F 201664%0%
Dec 2546°F34°F61°F 202223°F 201664%0%
Dec 2646°F34°F59°F 202224°F 201664%0%
Dec 2746°F34°F55°F 202225°F 202164%0%
Dec 2846°F34°F56°F 201125°F 200964%0%
Dec 2946°F34°F54°F 201726°F 202064%0%
Dec 3046°F34°F53°F 201121°F 201464%0%
Dec 3146°F34°F53°F 200918°F 201464%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Brownsville, in percent, and of at least 0.1 inch of snowfall.0204060801102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PST).

December 1
sunrise 7:28 AM, sunset 4:34 PM
December 31
sunrise 7:48 AM, sunset 4:42 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00353047 (Foster Dam), public domain. Records: NOAA GHCN-Daily, station USW00004236, 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.