Starbase climate

Starbase Weather in May

NOAA 1991-2020 normals for Port Isabel, 17 km from Starbase

Average highs run from 83°F on May 1 to 89°F on May 31, and lows from 70°F to 75°F. Normal precipitation for the month is 2.36 in over about 4 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 Starbase, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
86°F
Average low
73°F
Precipitation
2.36 in
Record high
102°FMay 4, 1999
Record low
47°FMay 3, 2010
Chance of a freeze
0%
Days of 90°F or more
5.5
Daylight
13 h 08 min to 13 h 39 min
Cloud cover
51%
Humidity
85%
Dew point
73°F
Wind
14.8 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 183°F70°F93°F 201058°F 201512%0%
May 284°F70°F94°F 200257°F 200412%0%
May 384°F71°F96°F 200247°F 201012%0%
May 484°F71°F102°F 199951°F 201312%0%
May 584°F71°F101°F 199958°F 201312%0%
May 684°F71°F92°F 200260°F 201712%0%
May 784°F71°F93°F 200362°F 201312%0%
May 885°F71°F94°F 201963°F 201813%0%
May 985°F72°F99°F 202465°F 200113%0%
May 1085°F72°F100°F 200665°F 202513%0%
May 1185°F72°F93°F 199963°F 202513%0%
May 1285°F72°F94°F 202561°F 200613%0%
May 1386°F72°F94°F 202465°F 200713%0%
May 1486°F72°F94°F 200660°F 201413%0%
May 1586°F73°F92°F 200357°F 201413%0%
May 1686°F73°F94°F 200357°F 201413%0%
May 1786°F73°F95°F 201860°F 200613%0%
May 1887°F73°F93°F 200266°F 200213%0%
May 1987°F73°F95°F 202062°F 200913%0%
May 2087°F73°F97°F 201162°F 202113%0%
May 2187°F74°F96°F 202262°F 200913%0%
May 2287°F74°F96°F 201768°F 200913%0%
May 2387°F74°F96°F 202466°F 200113%0%
May 2488°F74°F97°F 202466°F 201713%0%
May 2588°F74°F96°F 202466°F 202213%0%
May 2688°F74°F95°F 202470°F 199913%0%
May 2788°F75°F96°F 201768°F 202613%0%
May 2888°F75°F96°F 202469°F 200913%0%
May 2989°F75°F96°F 200569°F 202113%0%
May 3089°F75°F96°F 201269°F 200213%0%
May 3189°F75°F98°F 200469°F 201513%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Starbase, in percent, and of at least 0.1 inch of snowfall.0510151102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

May 1
sunrise 6:52 AM, sunset 8:00 PM
May 31
sunrise 6:37 AM, sunset 8:16 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00417179 (Port Isabel), 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.