Mounds climate

Mounds Weather in September

NOAA 1991-2020 normals for Cairo 3N, 8.1 km from Mounds

Average highs run from 86°F on September 1 to 77°F on September 30, and lows from 65°F to 54°F. Normal precipitation for the month is 3.51 in.

September day by day

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

Normal daily high and low temperature at Mounds, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
60°F
Precipitation
3.51 in
Record high
104°FSep 5, 1925
Record low
39°FSep 24, 1989
Chance of a freeze
0%
Days of 90°F or more
3.9
Daylight
12 h 57 min to 11 h 50 min
Cloud cover
46%
Humidity
66%
Dew point
58°F
Wind
6.9 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 186°F65°F101°F 195354°F 19670%
Sep 286°F64°F99°F 201154°F 19490%
Sep 386°F64°F101°F 192554°F 19740%
Sep 485°F64°F102°F 192548°F 19970%
Sep 585°F63°F104°F 192550°F 20100%
Sep 685°F63°F103°F 192547°F 19880%
Sep 785°F63°F103°F 192544°F 19880%
Sep 884°F62°F101°F 192546°F 20250%
Sep 984°F62°F100°F 192547°F 20250%
Sep 1084°F62°F96°F 198350°F 19240%
Sep 1183°F61°F98°F 198345°F 19170%
Sep 1283°F61°F95°F 192749°F 19400%
Sep 1383°F61°F97°F 193948°F 19990%
Sep 1482°F60°F97°F 193948°F 19990%
Sep 1582°F60°F96°F 195649°F 20130%
Sep 1682°F60°F95°F 195646°F 20000%
Sep 1781°F59°F95°F 192747°F 19180%
Sep 1881°F59°F96°F 195346°F 19810%
Sep 1981°F58°F96°F 195446°F 19810%
Sep 2080°F58°F95°F 195544°F 20120%
Sep 2180°F58°F97°F 202241°F 19180%
Sep 2280°F57°F99°F 202240°F 19830%
Sep 2379°F57°F92°F 200741°F 20120%
Sep 2479°F57°F95°F 200739°F 19890%
Sep 2579°F56°F93°F 193140°F 20120%
Sep 2678°F56°F90°F 195840°F 20000%
Sep 2778°F55°F94°F 199840°F 19420%
Sep 2878°F55°F93°F 195339°F 19420%
Sep 2977°F54°F97°F 195340°F 19420%
Sep 3077°F54°F91°F 195341°F 19200%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mounds, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:28 AM, sunset 7:25 PM
September 30
sunrise 6:51 AM, sunset 6:41 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093809 (Cairo 3N), public domain. Records: NOAA GHCN-Daily, station USW00093809, 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.