Mediapolis climate

Mediapolis Weather in September

NOAA 1991-2020 normals for Gladstone Dam 18, 18.3 km from Mediapolis

Average highs run from 82°F on September 1 to 72°F on September 30, and lows from 62°F to 51°F. Normal precipitation for the month is 3.62 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 Mediapolis, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
56°F
Precipitation
3.62 in
Record high
101°FSep 1, 2000
Record low
30°FSep 29, 1984
Chance of a freeze
1%
Days of 90°F or more
2.1
Daylight
13 h 06 min to 11 h 48 min
Cloud cover
48%
Humidity
69%
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 182°F62°F101°F 200044°F 196726%0%
Sep 282°F61°F99°F 201143°F 196726%0%
Sep 381°F61°F96°F 201142°F 197426%0%
Sep 481°F61°F95°F 199040°F 197426%0%
Sep 581°F60°F96°F 199046°F 197425%0%
Sep 681°F60°F97°F 198545°F 198825%0%
Sep 780°F60°F96°F 198544°F 202525%0%
Sep 880°F59°F95°F 201343°F 198625%0%
Sep 980°F59°F95°F 198344°F 200825%0%
Sep 1080°F59°F101°F 201341°F 197625%0%
Sep 1179°F58°F98°F 200045°F 196725%0%
Sep 1279°F58°F95°F 199143°F 197525%0%
Sep 1379°F57°F91°F 201937°F 201425%0%
Sep 1478°F57°F96°F 202537°F 201425%0%
Sep 1578°F57°F94°F 202536°F 200725%0%
Sep 1678°F56°F91°F 199740°F 198425%0%
Sep 1777°F56°F93°F 198842°F 201425%0%
Sep 1877°F55°F94°F 202140°F 197325%0%
Sep 1977°F55°F91°F 202236°F 199125%0%
Sep 2076°F55°F94°F 201334°F 199125%0%
Sep 2176°F54°F95°F 202236°F 198325%0%
Sep 2276°F54°F92°F 198833°F 199525%0%
Sep 2375°F53°F95°F 201735°F 198924%0%
Sep 2475°F53°F95°F 201735°F 198924%0%
Sep 2574°F53°F93°F 201738°F 196524%0%
Sep 2674°F52°F92°F 201732°F 198424%0%
Sep 2774°F52°F89°F 199037°F 198524%0%
Sep 2873°F51°F89°F 197139°F 197024%0%
Sep 2973°F51°F88°F 200230°F 198424%0%
Sep 3072°F51°F90°F 199433°F 198424%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mediapolis, 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 6:31 AM, sunset 7:37 PM
September 30
sunrise 7:00 AM, sunset 6:48 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00113455 (Gladstone Dam 18), public domain. Records: NOAA GHCN-Daily, station USC00131060, 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.