Starr County climate

Starr County Weather in July

NOAA 1991-2020 normals for Rio Grande City, 21.9 km from Starr County

Average highs run from 98°F on July 1 to 100°F on July 31, and lows from 75°F to 75°F. Normal precipitation for the month is 2.04 in over about 4 wet days.

July day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Starr County, in °F, with the record for each date.60708090100110151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
99°F
Average low
75°F
Precipitation
2.04 in
Record high
106°FJul 7, 2009
Record low
66°FJul 25, 2019
Chance of a freeze
0%
Days of 90°F or more
29.5
Daylight
13 h 47 min to 13 h 23 min
Cloud cover
38%
Humidity
63%
Dew point
70°F
Wind
12.8 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
Jul 198°F75°F102°F 202271°F 201515%0%
Jul 298°F75°F104°F 202370°F 201515%0%
Jul 398°F75°F103°F 200569°F 201315%0%
Jul 498°F75°F104°F 200970°F 201315%0%
Jul 598°F75°F101°F 200570°F 201315%0%
Jul 698°F75°F104°F 200971°F 202415%0%
Jul 798°F75°F106°F 200971°F 201114%0%
Jul 899°F75°F104°F 200571°F 201114%0%
Jul 999°F75°F103°F 200572°F 201714%0%
Jul 1099°F75°F104°F 202273°F 201414%0%
Jul 1199°F75°F104°F 202272°F 200414%0%
Jul 1299°F75°F104°F 202272°F 200413%0%
Jul 1399°F75°F106°F 202073°F 200913%0%
Jul 1499°F75°F102°F 201969°F 200413%0%
Jul 1599°F75°F102°F 202369°F 200413%0%
Jul 1699°F75°F104°F 202370°F 200713%0%
Jul 1799°F75°F104°F 202372°F 200712%0%
Jul 1899°F75°F104°F 202369°F 200712%0%
Jul 1999°F75°F104°F 200972°F 202012%0%
Jul 2099°F75°F104°F 202373°F 201312%0%
Jul 2199°F75°F105°F 202671°F 201211%0%
Jul 2299°F75°F105°F 202370°F 200811%0%
Jul 2399°F75°F104°F 202373°F 200611%0%
Jul 24100°F75°F104°F 201869°F 201911%0%
Jul 25100°F75°F103°F 200966°F 201911%0%
Jul 26100°F75°F103°F 200971°F 201911%0%
Jul 27100°F75°F103°F 201371°F 202110%0%
Jul 28100°F75°F103°F 201773°F 202110%0%
Jul 29100°F75°F103°F 201769°F 202510%0%
Jul 30100°F75°F105°F 201770°F 202510%0%
Jul 31100°F75°F104°F 202371°F 201510%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Starr County, 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 (CDT).

July 1
sunrise 6:45 AM, sunset 8:32 PM
July 31
sunrise 7:00 AM, sunset 8:23 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00417622 (Rio Grande City), public domain. Records: NOAA GHCN-Daily, station USW00012987, 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.