Pomeroy climate

Pomeroy Weather in September

NOAA 1991-2020 normals for Rockwell City, 17.7 km from Pomeroy

Average highs run from 79°F on September 1 to 70°F on September 30, and lows from 57°F to 45°F. Normal precipitation for the month is 2.95 in over about 8 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 Pomeroy, in °F, with the record for each date.020406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
75°F
Average low
51°F
Precipitation
2.95 in
Record high
103°FSep 6, 1939
Record low
20°FSep 28, 1942
Chance of a freeze
18%
Days of 90°F or more
1.5
Daylight
13 h 09 min to 11 h 47 min
Cloud cover
49%
Humidity
67%
Dew point
51°F
Wind
10.3 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 179°F57°F99°F 191137°F 194927%0%
Sep 278°F56°F98°F 191339°F 190127%0%
Sep 378°F56°F99°F 192532°F 197427%0%
Sep 478°F56°F100°F 192534°F 197426%0%
Sep 578°F55°F100°F 191336°F 196226%0%
Sep 678°F55°F103°F 193939°F 195626%0%
Sep 778°F55°F102°F 193936°F 198626%0%
Sep 877°F54°F99°F 194738°F 198626%0%
Sep 977°F54°F98°F 195535°F 192426%0%
Sep 1077°F53°F98°F 193136°F 191026%0%
Sep 1177°F53°F97°F 192736°F 195526%0%
Sep 1276°F53°F100°F 193929°F 190226%0%
Sep 1376°F52°F100°F 193927°F 190226%0%
Sep 1476°F52°F100°F 193932°F 192326%0%
Sep 1576°F51°F100°F 193932°F 201126%0%
Sep 1675°F51°F96°F 193131°F 193726%0%
Sep 1775°F51°F96°F 192530°F 190026%0%
Sep 1875°F50°F95°F 194727°F 192926%0%
Sep 1974°F50°F97°F 194831°F 199126%0%
Sep 2074°F49°F92°F 194030°F 199126%0%
Sep 2174°F49°F97°F 193730°F 199926%0%
Sep 2273°F49°F97°F 193726°F 191326%0%
Sep 2373°F48°F90°F 193827°F 191326%0%
Sep 2473°F48°F89°F 193528°F 194226%0%
Sep 2572°F47°F91°F 192027°F 192626%0%
Sep 2672°F47°F92°F 195626°F 192626%0%
Sep 2771°F46°F92°F 195626°F 192826%0%
Sep 2871°F46°F91°F 193920°F 194226%0%
Sep 2971°F46°F88°F 198126°F 194926%0%
Sep 3070°F45°F91°F 195225°F 193926%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Pomeroy, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:44 AM, sunset 7:53 PM
September 30
sunrise 7:15 AM, sunset 7:02 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00137161 (Rockwell City), public domain. Records: NOAA GHCN-Daily, station USC00132999, 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.