Lee County climate

Lee County Weather in September

NOAA 1991-2020 normals for Donnellson, 7.2 km from Lee County

Average highs run from 83°F on September 1 to 73°F on September 30, and lows from 59°F to 49°F. Normal precipitation for the month is 3.92 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 Lee County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
54°F
Precipitation
3.92 in
Record high
100°FSep 2, 2000
Record low
31°FSep 26, 1984
Chance of a freeze
3%
Days of 90°F or more
3.9
Daylight
13 h 05 min to 11 h 47 min
Cloud cover
46%
Humidity
69%
Dew point
55°F
Wind
8.9 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 183°F59°F99°F 195344°F 196725%0%
Sep 283°F59°F100°F 200047°F 197425%0%
Sep 382°F59°F96°F 196042°F 197425%0%
Sep 482°F58°F98°F 199038°F 197425%0%
Sep 582°F58°F97°F 199044°F 196225%0%
Sep 682°F58°F97°F 199043°F 196225%0%
Sep 782°F57°F96°F 196040°F 195625%0%
Sep 881°F57°F96°F 196043°F 195625%0%
Sep 981°F57°F97°F 201345°F 200825%0%
Sep 1081°F56°F95°F 198342°F 197625%0%
Sep 1180°F56°F97°F 201343°F 195925%0%
Sep 1280°F56°F94°F 199136°F 197525%0%
Sep 1380°F55°F94°F 202538°F 195325%0%
Sep 1479°F55°F97°F 202537°F 197425%0%
Sep 1579°F55°F92°F 202538°F 200724%0%
Sep 1679°F54°F91°F 195538°F 198424%0%
Sep 1778°F54°F93°F 195440°F 198424%0%
Sep 1878°F53°F93°F 195338°F 197325%0%
Sep 1978°F53°F94°F 197237°F 199125%0%
Sep 2077°F53°F92°F 202436°F 196225%0%
Sep 2177°F52°F89°F 197236°F 198325%0%
Sep 2277°F52°F92°F 201733°F 197424%0%
Sep 2376°F52°F99°F 201732°F 198324%0%
Sep 2476°F51°F95°F 201734°F 198324%0%
Sep 2575°F51°F91°F 201735°F 197524%0%
Sep 2675°F51°F90°F 195331°F 198424%0%
Sep 2775°F50°F90°F 195633°F 198424%0%
Sep 2874°F50°F95°F 195334°F 196124%0%
Sep 2974°F50°F96°F 195331°F 198424%0%
Sep 3073°F49°F91°F 202333°F 198424%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lee County, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:33 AM, sunset 7:38 PM
September 30
sunrise 7:02 AM, sunset 6:49 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00132299 (Donnellson), public domain. Records: NOAA GHCN-Daily, station USC00133007, 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.