Diamond City climate

Diamond City Weather in September

NOAA 1991-2020 normals for Lead Hill, 5.1 km from Diamond City

Average highs run from 85°F on September 1 to 76°F on September 30, and lows from 62°F to 51°F. Normal precipitation for the month is 4.09 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 Diamond City, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
57°F
Precipitation
4.09 in
Record high
99°FSep 1, 2011
Record low
41°FSep 6, 2011
Chance of a freeze
1%
Days of 90°F or more
5.1
Daylight
12 h 57 min to 11 h 50 min
Cloud cover
46%
Humidity
68%
Dew point
58°F
Wind
4.5 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 185°F62°F99°F 201152°F 200925%0%
Sep 285°F62°F99°F 201152°F 200925%0%
Sep 384°F62°F97°F 201154°F 201625%0%
Sep 484°F61°F95°F 201252°F 201025%0%
Sep 584°F61°F97°F 201254°F 201125%0%
Sep 684°F61°F97°F 201441°F 201125%0%
Sep 783°F60°F95°F 201246°F 201125%0%
Sep 883°F60°F93°F 201245°F 202424%0%
Sep 983°F60°F91°F 201345°F 202424%0%
Sep 1082°F59°F93°F 201345°F 202424%0%
Sep 1182°F59°F93°F 201346°F 202424%0%
Sep 1282°F58°F91°F 201348°F 201524%0%
Sep 1381°F58°F93°F 202548°F 201424%0%
Sep 1481°F58°F97°F 201148°F 201424%0%
Sep 1581°F57°F93°F 202546°F 201124%0%
Sep 1681°F57°F93°F 201946°F 201124%0%
Sep 1780°F57°F93°F 202550°F 201124%0%
Sep 1880°F56°F93°F 202550°F 202324%0%
Sep 1980°F56°F93°F 201950°F 202324%0%
Sep 2079°F55°F91°F 201746°F 202024%0%
Sep 2179°F55°F93°F 201746°F 202024%0%
Sep 2278°F54°F91°F 201746°F 201324%0%
Sep 2378°F54°F91°F 201748°F 201124%0%
Sep 2478°F54°F91°F 201748°F 201424%0%
Sep 2577°F53°F90°F 201748°F 201423%0%
Sep 2677°F53°F88°F 201246°F 201123%0%
Sep 2777°F52°F86°F 201446°F 201023%0%
Sep 2876°F52°F90°F 202148°F 201823%0%
Sep 2976°F52°F86°F 201441°F 202223%0%
Sep 3076°F51°F88°F 201443°F 202223%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Diamond City, 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 6:43 AM, sunset 7:40 PM
September 30
sunrise 7:06 AM, sunset 6:56 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00034106 (Lead Hill), public domain. Records: NOAA GHCN-Daily, station USC00230887, 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.