Day County climate

Day County Weather in September

NOAA 1991-2020 normals for Webster, 7.6 km from Day County

Average highs run from 76°F on September 1 to 64°F on September 30, and lows from 55°F to 43°F. Normal precipitation for the month is 2.56 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 Day County, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
71°F
Average low
50°F
Precipitation
2.56 in
Record high
107°FSep 10, 1931
Record low
11°FSep 28, 1893
Chance of a freeze
26%
Days of 90°F or more
0.6
Daylight
13 h 16 min to 11 h 44 min
Cloud cover
52%
Humidity
64%
Dew point
46°F
Wind
11.9 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 176°F55°F104°F 191334°F 194623%0%
Sep 276°F55°F101°F 198334°F 197423%0%
Sep 375°F55°F99°F 194730°F 197423%0%
Sep 475°F54°F102°F 192232°F 195623%0%
Sep 575°F54°F103°F 191329°F 196523%0%
Sep 674°F54°F100°F 197830°F 195623%0%
Sep 774°F53°F101°F 193135°F 198623%0%
Sep 874°F53°F102°F 193133°F 199523%0%
Sep 973°F52°F103°F 193131°F 192423%0%
Sep 1073°F52°F107°F 193128°F 195923%0%
Sep 1173°F52°F100°F 193128°F 195523%0%
Sep 1272°F51°F94°F 193131°F 197523%0%
Sep 1372°F51°F93°F 192030°F 197023%0%
Sep 1472°F50°F96°F 194829°F 197923%
Sep 1571°F50°F98°F 193527°F 191623%
Sep 1671°F50°F94°F 192526°F 195923%
Sep 1770°F49°F96°F 195529°F 191623%
Sep 1870°F49°F93°F 199824°F 192923%
Sep 1970°F48°F99°F 198426°F 191823%
Sep 2069°F48°F94°F 197220°F 191823%
Sep 2169°F47°F97°F 193725°F 191323%
Sep 2268°F47°F100°F 193621°F 194723%
Sep 2368°F47°F93°F 193524°F 192823%
Sep 2467°F46°F92°F 193517°F 189323%
Sep 2567°F46°F91°F 193818°F 192623%
Sep 2666°F45°F94°F 197416°F 189323%
Sep 2766°F45°F95°F 195619°F 189322%
Sep 2865°F44°F90°F 192211°F 189322%
Sep 2965°F44°F89°F 193318°F 193922%
Sep 3064°F43°F90°F 197616°F 197422%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Day 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 6:52 AM, sunset 8:08 PM
September 30
sunrise 7:28 AM, sunset 7:12 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00399004 (Webster), public domain. Records: NOAA GHCN-Daily, station USC00391049, 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.