Brownsville climate

Brownsville Weather in May

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

Average highs run from 64°F on May 1 to 70°F on May 31, and lows from 41°F to 46°F. Normal precipitation for the month is 3.80 in over about 13 wet days.

May 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.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
67°F
Average low
44°F
Precipitation
3.80 in
Record high
91°FMay 14, 2023
Record low
31°FMay 12, 2011
Chance of a freeze
19%
Daylight
14 h 14 min to 15 h 18 min
Cloud cover
66%
Humidity
84%
Dew point
48°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
May 164°F41°F84°F 201433°F 201149%0%
May 264°F42°F81°F 201632°F 201948%0%
May 364°F42°F86°F 202635°F 201948%0%
May 465°F42°F81°F 201733°F 202547%0%
May 565°F42°F83°F 201334°F 201246%0%
May 665°F42°F81°F 201933°F 201046%0%
May 765°F42°F82°F 201635°F 201445%0%
May 866°F43°F82°F 202033°F 202145%0%
May 966°F43°F84°F 201934°F 202244%0%
May 1066°F43°F83°F 201933°F 201244%0%
May 1166°F43°F82°F 201333°F 202244%0%
May 1266°F43°F81°F 202331°F 201143%0%
May 1367°F43°F89°F 202333°F 202243%0%
May 1467°F44°F91°F 202338°F 200743%0%
May 1567°F44°F84°F 202335°F 201743%0%
May 1667°F44°F91°F 200837°F 200742%0%
May 1767°F44°F91°F 200837°F 201242%0%
May 1868°F44°F82°F 200833°F 201242%0%
May 1968°F45°F82°F 200836°F 201242%0%
May 2068°F45°F80°F 202334°F 200942%0%
May 2168°F45°F82°F 202635°F 202141%0%
May 2268°F45°F86°F 201735°F 200741%0%
May 2368°F45°F84°F 201736°F 202041%0%
May 2469°F45°F80°F 202637°F 200941%0%
May 2569°F45°F80°F 202337°F 201340%0%
May 2669°F46°F81°F 202339°F 202140%0%
May 2769°F46°F84°F 201740°F 202540%0%
May 2869°F46°F86°F 202034°F 200740%0%
May 2969°F46°F85°F 200940°F 201239%0%
May 3069°F46°F85°F 200940°F 201839%0%
May 3170°F46°F86°F 202138°F 202639%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.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 6:02 AM, sunset 8:16 PM
May 31
sunrise 5:31 AM, sunset 8:49 PM

Every day of May: 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.