Quincy climate

Quincy Weather in September

NOAA 1991-2020 normals for Quincy Dam 21, 3.9 km from Quincy

Average highs run from 83°F on September 1 to 74°F on September 30, and lows from 62°F to 52°F. Normal precipitation for the month is 3.37 in over about 6 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 Quincy, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
79°F
Average low
57°F
Precipitation
3.37 in
Record high
104°FSep 1, 2011
Record low
32°FSep 29, 1984
Chance of a freeze
0%
Days of 90°F or more
4.0
Daylight
13 h 03 min to 11 h 48 min
Cloud cover
46%
Humidity
69%
Dew point
55°F
Wind
8.7 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 183°F62°F104°F 201141°F 194922%0%
Sep 283°F62°F101°F 201145°F 194922%0%
Sep 383°F62°F99°F 196041°F 195222%0%
Sep 483°F61°F98°F 195441°F 197422%0%
Sep 582°F61°F98°F 195445°F 195022%0%
Sep 682°F61°F98°F 196043°F 201122%0%
Sep 782°F60°F97°F 196042°F 195622%0%
Sep 882°F60°F96°F 198040°F 198622%0%
Sep 981°F60°F100°F 201345°F 194922%0%
Sep 1081°F59°F98°F 201343°F 196722%0%
Sep 1181°F59°F97°F 201343°F 196722%0%
Sep 1280°F59°F94°F 198042°F 201422%0%
Sep 1380°F58°F97°F 195640°F 195322%0%
Sep 1480°F58°F96°F 202538°F 199622%0%
Sep 1579°F57°F94°F 202637°F 200722%0%
Sep 1679°F57°F96°F 195641°F 198422%0%
Sep 1779°F57°F95°F 195443°F 195122%0%
Sep 1878°F56°F94°F 195341°F 198122%0%
Sep 1978°F56°F95°F 197235°F 199122%0%
Sep 2078°F55°F94°F 194834°F 199122%0%
Sep 2177°F55°F92°F 198038°F 199123%0%
Sep 2277°F55°F94°F 198834°F 199523%0%
Sep 2376°F54°F92°F 200733°F 199523%0%
Sep 2476°F54°F92°F 200733°F 198923%0%
Sep 2576°F53°F90°F 201737°F 195023%0%
Sep 2675°F53°F91°F 195334°F 198423%0%
Sep 2775°F53°F90°F 201935°F 198923%0%
Sep 2874°F52°F100°F 195333°F 195123%0%
Sep 2974°F52°F100°F 195332°F 198424%0%
Sep 3074°F52°F94°F 202336°F 194924%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Quincy, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:34 AM, sunset 7:37 PM
September 30
sunrise 7:01 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 USC00117077 (Quincy Dam 21), public domain. Records: NOAA GHCN-Daily, station USW00093989, 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.