Stamford climate

Stamford Weather in September

NOAA 1991-2020 normals for Lansing Manor, 13.1 km from Stamford

Average highs run from 78°F on September 1 to 67°F on September 30, and lows from 52°F to 42°F. Normal precipitation for the month is 4.07 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 Stamford, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
73°F
Average low
47°F
Precipitation
4.07 in
Record high
85°FSep 12, 2013
Record low
27°FSep 22, 2020
Chance of a freeze
40%
Days of 90°F or more
0.6
Daylight
13 h 08 min to 11 h 47 min
Cloud cover
58%
Humidity
77%
Dew point
51°F
Wind
4.0 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 178°F52°F80°F 201234°F 20170%
Sep 277°F52°F78°F 201532°F 20170%
Sep 377°F52°F80°F 201533°F 20170%
Sep 477°F51°F83°F 201837°F 20240%
Sep 577°F51°F80°F 201842°F 20200%
Sep 676°F51°F83°F 201835°F 20130%
Sep 776°F50°F82°F 202345°F 20240%
Sep 876°F50°F83°F 201544°F 20240%
Sep 976°F50°F83°F 201540°F 20190%
Sep 1075°F50°F83°F 201535°F 20130%
Sep 1175°F49°F78°F 202036°F 20120%
Sep 1275°F49°F85°F 201336°F 20120%
Sep 1374°F49°F75°F 201341°F 20190%
Sep 1474°F48°F76°F 202439°F 20140%
Sep 1574°F48°F73°F 202432°F 20200%
Sep 1673°F47°F75°F 201834°F 2014
Sep 1773°F47°F78°F 201832°F 2013
Sep 1872°F47°F76°F 201533°F 2013
Sep 1972°F46°F77°F 201828°F 2020
Sep 2072°F46°F75°F 201530°F 2020
Sep 2171°F46°F75°F 201628°F 2020
Sep 2271°F45°F74°F 201727°F 2020
Sep 2370°F45°F77°F 201928°F 2020
Sep 2470°F44°F77°F 201732°F 2022
Sep 2570°F44°F82°F 201732°F 2016
Sep 2669°F44°F72°F 202032°F 2016
Sep 2769°F43°F71°F 202036°F 2015
Sep 2868°F43°F71°F 202036°F 2015
Sep 2968°F42°F74°F 202536°F 2013
Sep 3067°F42°F70°F 202531°F 2022

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Stamford, 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 6:24 AM, sunset 7:32 PM
September 30
sunrise 6:55 AM, sunset 6:42 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00304575 (Lansing Manor), public domain. Records: NOAA GHCN-Daily, station USC00303322, 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.