Brownsville climate

Brownsville Weather in August

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

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 52°F to 49°F. Normal precipitation for the month is 0.64 in over about 3 wet days.

August 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.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
83°F
Average low
50°F
Precipitation
0.64 in
Record high
103°FAug 2, 2017
Record low
40°FAug 31, 2008
Chance of a freeze
0%
Days of 90°F or more
6.6
Daylight
14 h 38 min to 13 h 16 min
Cloud cover
32%
Humidity
76%
Dew point
55°F
Wind
5.1 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
Aug 184°F52°F99°F 201746°F 20107%0%
Aug 284°F52°F103°F 201746°F 20168%0%
Aug 384°F51°F101°F 201745°F 20088%0%
Aug 484°F51°F99°F 201247°F 20108%0%
Aug 584°F51°F94°F 201246°F 20258%0%
Aug 684°F51°F95°F 202643°F 20168%0%
Aug 784°F51°F97°F 202243°F 20208%0%
Aug 884°F51°F93°F 201746°F 20098%0%
Aug 984°F51°F95°F 201847°F 20268%0%
Aug 1084°F51°F101°F 202544°F 20079%0%
Aug 1183°F51°F102°F 202544°F 20209%0%
Aug 1283°F51°F102°F 202143°F 20079%0%
Aug 1383°F51°F100°F 202344°F 20209%0%
Aug 1483°F51°F103°F 202346°F 20099%0%
Aug 1583°F51°F102°F 202347°F 200910%0%
Aug 1683°F50°F103°F 202346°F 200910%0%
Aug 1783°F50°F94°F 202246°F 201810%0%
Aug 1883°F50°F98°F 201644°F 201111%0%
Aug 1982°F50°F103°F 201646°F 202311%0%
Aug 2082°F50°F98°F 201645°F 201011%0%
Aug 2182°F50°F92°F 201845°F 201012%0%
Aug 2282°F50°F100°F 202546°F 201012%0%
Aug 2382°F50°F99°F 202541°F 202113%0%
Aug 2482°F50°F96°F 202543°F 200913%0%
Aug 2582°F49°F96°F 201042°F 201813%0%
Aug 2681°F49°F96°F 201644°F 200914%0%
Aug 2781°F49°F99°F 201943°F 201014%0%
Aug 2881°F49°F96°F 201946°F 201015%0%
Aug 2981°F49°F92°F 200742°F 201015%0%
Aug 3081°F49°F95°F 202242°F 202616%0%
Aug 3180°F49°F92°F 202240°F 200816%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.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:59 AM, sunset 8:37 PM
August 31
sunrise 6:34 AM, sunset 7:50 PM

Every day of August: 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.