Commack climate

Commack Weather in September

NOAA 1991-2020 normals for Centerport, 8.1 km from Commack

Average highs run from 79°F on September 1 to 69°F on September 30, and lows from 63°F to 54°F. Normal precipitation for the month is 4.67 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Commack, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
74°F
Average low
59°F
Precipitation
4.67 in
Record high
94°FSep 6, 2023
Record low
41°FSep 29, 2000
Chance of a freeze
0%
Days of 90°F or more
0.7
Daylight
13 h 05 min to 11 h 48 min
Cloud cover
55%
Humidity
74%
Dew point
57°F
Wind
6.3 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 179°F63°F92°F 201054°F 20170%
Sep 279°F63°F89°F 200551°F 20170%
Sep 379°F63°F92°F 201554°F 20010%
Sep 478°F62°F93°F 201856°F 20240%
Sep 578°F62°F91°F 202353°F 20000%
Sep 678°F62°F94°F 202351°F 20000%
Sep 778°F62°F93°F 202350°F 20000%
Sep 877°F61°F92°F 201555°F 20000%
Sep 977°F61°F94°F 201652°F 20130%
Sep 1077°F61°F87°F 202653°F 20030%
Sep 1176°F61°F89°F 201352°F 20120%
Sep 1276°F60°F92°F 200549°F 20060%
Sep 1376°F60°F89°F 200550°F 20060%
Sep 1475°F60°F85°F 201650°F 20010%
Sep 1575°F59°F84°F 200848°F 20010%
Sep 1674°F59°F85°F 201548°F 20110%
Sep 1774°F59°F86°F 201547°F 20130%
Sep 1874°F58°F85°F 202146°F 20130%
Sep 1973°F58°F86°F 202247°F 20190%
Sep 2073°F58°F82°F 200048°F 20090%
Sep 2172°F57°F83°F 201646°F 20200%
Sep 2272°F57°F84°F 200546°F 20200%
Sep 2372°F57°F88°F 200549°F 19990%
Sep 2471°F56°F88°F 201747°F 20130%
Sep 2571°F56°F87°F 201045°F 20120%
Sep 2670°F56°F83°F 202549°F 20090%
Sep 2770°F55°F84°F 201745°F 20000%
Sep 2870°F55°F82°F 202547°F 20000%
Sep 2969°F55°F81°F 201541°F 20000%
Sep 3069°F54°F80°F 202542°F 20000%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Commack, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:20 AM, sunset 7:25 PM
September 30
sunrise 6:49 AM, sunset 6:37 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00301309 (Centerport), public domain. Records: NOAA GHCN-Daily, station USW00054787, 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.