Runnells climate

Runnells Weather in September

NOAA 1991-2020 normals for Des Moines 17 E, 7.8 km from Runnells

Average highs run from 80°F on September 1 to 71°F on September 30, and lows from 58°F to 48°F. Normal precipitation for the month is 3.16 in over about 9 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 Runnells, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
76°F
Average low
53°F
Precipitation
3.16 in
Record high
101°FSep 9, 2013
Record low
28°FSep 29, 1984
Chance of a freeze
11%
Days of 90°F or more
1.6
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
47%
Humidity
68%
Dew point
53°F
Wind
9.8 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 180°F58°F98°F 198438°F 194931%0%
Sep 280°F57°F98°F 200045°F 194631%0%
Sep 379°F57°F96°F 198340°F 197431%0%
Sep 479°F57°F97°F 201242°F 197431%0%
Sep 579°F56°F96°F 199045°F 196230%0%
Sep 679°F56°F97°F 199042°F 198830%0%
Sep 779°F56°F97°F 197841°F 198630%0%
Sep 878°F55°F99°F 194740°F 198630%0%
Sep 978°F55°F101°F 201344°F 199530%0%
Sep 1078°F55°F99°F 201344°F 197630%0%
Sep 1178°F54°F97°F 200040°F 195530%0%
Sep 1277°F54°F94°F 198442°F 197530%0%
Sep 1377°F54°F96°F 202539°F 194930%0%
Sep 1477°F53°F92°F 195539°F 199629%0%
Sep 1576°F53°F96°F 195537°F 200729%0%
Sep 1676°F53°F94°F 195538°F 198429%0%
Sep 1776°F52°F93°F 195338°F 198029%0%
Sep 1876°F52°F93°F 194738°F 199129%0%
Sep 1975°F52°F96°F 194833°F 199129%
Sep 2075°F51°F94°F 202233°F 199129%
Sep 2175°F51°F93°F 200535°F 199529%
Sep 2274°F51°F92°F 201731°F 199529%
Sep 2374°F50°F92°F 201732°F 198329%
Sep 2473°F50°F92°F 201732°F 196529%
Sep 2573°F50°F88°F 195637°F 194729%
Sep 2673°F49°F90°F 195631°F 198429%
Sep 2772°F49°F91°F 195637°F 195129%
Sep 2872°F48°F99°F 195331°F 195129%
Sep 2971°F48°F91°F 202328°F 198429%
Sep 3071°F48°F92°F 195230°F 198429%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Runnells, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:40 AM, sunset 7:46 PM
September 30
sunrise 7:09 AM, sunset 6:57 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00054902 (Des Moines 17 E), public domain. Records: NOAA GHCN-Daily, station USW00014933, 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.