Cotulla climate

Cotulla Weather in September

NOAA 1991-2020 normals for Cotulla La Salle CO AP, 2.7 km from Cotulla

Average highs run from 98°F on September 1 to 91°F on September 30, and lows from 74°F to 68°F. Normal precipitation for the month is 2.98 in over about 7 wet days.

September day by day

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

Normal daily high and low temperature at Cotulla, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
94°F
Average low
71°F
Precipitation
2.98 in
Record high
109°FSep 25, 2005
Record low
48°FSep 28, 1967
Chance of a freeze
0%
Days of 90°F or more
22.9
Daylight
12 h 43 min to 11 h 55 min
Cloud cover
47%
Humidity
68%
Dew point
68°F
Wind
8.3 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Sep 198°F74°F106°F 195262°F 195020%
Sep 297°F73°F105°F 202667°F 195020%
Sep 397°F73°F106°F 202665°F 197421%
Sep 497°F73°F105°F 201163°F 197421%
Sep 596°F73°F105°F 201258°F 197421%
Sep 696°F73°F106°F 202155°F 197421%
Sep 796°F73°F105°F 201258°F 197421%
Sep 896°F72°F106°F 202360°F 197421%
Sep 995°F72°F105°F 202364°F 201122%
Sep 1095°F72°F105°F 195061°F 202022%
Sep 1195°F72°F105°F 202664°F 201722%
Sep 1295°F72°F105°F 202662°F 201721%
Sep 1394°F71°F104°F 195065°F 201421%
Sep 1494°F71°F106°F 202364°F 201421%
Sep 1594°F71°F104°F 202366°F 200921%
Sep 1694°F71°F102°F 195060°F 197921%
Sep 1793°F71°F104°F 202157°F 195121%
Sep 1893°F70°F106°F 201959°F 196821%
Sep 1993°F70°F105°F 202157°F 197121%
Sep 2093°F70°F107°F 202158°F 197121%
Sep 2193°F70°F105°F 202162°F 197120%
Sep 2292°F70°F104°F 202358°F 197520%
Sep 2392°F69°F105°F 202353°F 197520%
Sep 2492°F69°F107°F 202351°F 197520%
Sep 2592°F69°F109°F 200555°F 197520%
Sep 2692°F69°F107°F 200550°F 197519%
Sep 2791°F68°F105°F 195355°F 197019%
Sep 2891°F68°F107°F 200548°F 196719%
Sep 2991°F68°F101°F 197749°F 196718%
Sep 3091°F68°F101°F 197750°F 202018%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cotulla, in percent.05101520251102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 7:15 AM, sunset 7:58 PM
September 30
sunrise 7:29 AM, sunset 7:24 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00012947 (Cotulla La Salle CO AP), public domain. Records: NOAA GHCN-Daily, station USW00012947, 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.