Hills climate

Hills Weather in September

NOAA 1991-2020 normals for Iowa City, 6.6 km from Hills

Average highs run from 80°F on September 1 to 71°F on September 30, and lows from 57°F to 46°F. Normal precipitation for the month is 3.45 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 Hills, 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
52°F
Precipitation
3.45 in
Record high
101°FSep 9, 2013
Record low
26°FSep 23, 1995
Chance of a freeze
21%
Days of 90°F or more
2.7
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
47%
Humidity
70%
Dew point
54°F
Wind
9.2 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°F57°F98°F 201136°F 194928%0%
Sep 280°F56°F98°F 200040°F 194928%0%
Sep 380°F56°F96°F 202341°F 195228%0%
Sep 480°F56°F97°F 202341°F 195228%0%
Sep 579°F56°F94°F 202641°F 195028%0%
Sep 679°F55°F93°F 201539°F 195028%0%
Sep 779°F55°F96°F 201340°F 202528%0%
Sep 879°F54°F90°F 200239°F 194928%0%
Sep 979°F54°F101°F 201340°F 199528%0%
Sep 1078°F54°F99°F 201339°F 199528%0%
Sep 1178°F53°F97°F 200042°F 199528%0%
Sep 1278°F53°F94°F 195241°F 201428%0%
Sep 1377°F53°F96°F 202537°F 201428%0%
Sep 1477°F52°F96°F 202538°F 199628%0%
Sep 1577°F52°F93°F 201735°F 200728%0%
Sep 1677°F52°F93°F 202538°F 195128%0%
Sep 1776°F51°F92°F 194838°F 199928%0%
Sep 1876°F51°F93°F 194841°F 199928%0%
Sep 1976°F50°F96°F 194838°F 195228%0%
Sep 2075°F50°F97°F 202237°F 200628%0%
Sep 2175°F50°F92°F 200536°F 195228%0%
Sep 2274°F49°F94°F 201730°F 199528%0%
Sep 2374°F49°F95°F 201726°F 199528%0%
Sep 2474°F48°F93°F 201731°F 199528%0%
Sep 2573°F48°F93°F 201735°F 195028%0%
Sep 2673°F48°F90°F 202135°F 195028%0%
Sep 2772°F47°F89°F 202138°F 200028%0%
Sep 2872°F47°F94°F 195232°F 195128%0%
Sep 2972°F47°F90°F 200228°F 194928%0%
Sep 3071°F46°F93°F 202328°F 194928%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Hills, 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 6:32 AM, sunset 7:39 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 USC00134101 (Iowa City), public domain. Records: NOAA GHCN-Daily, station USW00014937, 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.