McMullen County climate

McMullen County Weather in September

NOAA 1991-2020 normals for Tilden 4 Sse, 7.5 km from McMullen County

Average highs run from 96°F on September 1 to 89°F on September 30, and lows from 73°F to 67°F. Normal precipitation for the month is 3.57 in over about 5 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 McMullen County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
93°F
Average low
70°F
Precipitation
3.57 in
Record high
110°FSep 6, 2000
Record low
41°FSep 29, 1909
Chance of a freeze
0%
Days of 90°F or more
22.0
Daylight
12 h 42 min to 11 h 54 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; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 196°F73°F108°F 200568°F 197917%0%
Sep 296°F73°F105°F 190764°F 200417%0%
Sep 396°F72°F106°F 198567°F 197417%0%
Sep 496°F72°F105°F 190758°F 197417%0%
Sep 595°F72°F107°F 200056°F 197417%0%
Sep 695°F72°F110°F 200054°F 197417%0%
Sep 795°F72°F110°F 200055°F 197417%0%
Sep 895°F72°F103°F 190757°F 197417%0%
Sep 994°F71°F110°F 200061°F 198817%0%
Sep 1094°F71°F110°F 200060°F 198117%0%
Sep 1194°F71°F104°F 196555°F 190717%0%
Sep 1293°F71°F103°F 198256°F 190717%0%
Sep 1393°F71°F102°F 198257°F 196017%0%
Sep 1493°F70°F105°F 197758°F 199317%0%
Sep 1593°F70°F102°F 190956°F 198916%0%
Sep 1692°F70°F102°F 198756°F 197916%0%
Sep 1792°F70°F102°F 198755°F 197916%0%
Sep 1892°F70°F107°F 191046°F 199116%0%
Sep 1992°F69°F103°F 199551°F 198116%0%
Sep 2091°F69°F101°F 190753°F 199116%0%
Sep 2191°F69°F108°F 190958°F 198115%0%
Sep 2291°F69°F103°F 199252°F 199515%0%
Sep 2391°F68°F103°F 190751°F 197515%0%
Sep 2491°F68°F102°F 200050°F 197515%0%
Sep 2590°F68°F105°F 200549°F 198914%0%
Sep 2690°F68°F108°F 200544°F 197514%0%
Sep 2790°F67°F105°F 200551°F 197514%0%
Sep 2890°F67°F103°F 200543°F 190914%0%
Sep 2990°F67°F106°F 200541°F 190913%0%
Sep 3089°F67°F100°F 191045°F 199213%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at McMullen 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).

September 1
sunrise 7:13 AM, sunset 7:55 PM
September 30
sunrise 7:27 AM, sunset 7:21 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00419031 (Tilden 4 Sse), public domain. Records: NOAA GHCN-Daily, station USC00419031, 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.