Cotuit climate

Cotuit Weather in September

NOAA 1991-2020 normals for Hyannis, 12.3 km from Cotuit

Average highs run from 75°F on September 1 to 67°F on September 30, and lows from 61°F to 52°F. Normal precipitation for the month is 3.83 in over about 8 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 Cotuit, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
71°F
Average low
57°F
Precipitation
3.83 in
Record high
87°FSep 10, 2016
Record low
35°FSep 20, 2014
Chance of a freeze
0%
Daylight
13 h 07 min to 11 h 47 min
Cloud cover
53%
Humidity
79%
Dew point
59°F
Wind
12.8 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 175°F61°F83°F 201550°F 201723%0%
Sep 275°F61°F79°F 201442°F 201723%0%
Sep 375°F60°F85°F 201441°F 201724%0%
Sep 474°F60°F81°F 201548°F 202424%0%
Sep 574°F60°F82°F 202049°F 202424%0%
Sep 674°F60°F81°F 201148°F 201324%0%
Sep 774°F59°F83°F 201843°F 201324%0%
Sep 873°F59°F86°F 202344°F 201324%0%
Sep 973°F59°F86°F 201544°F 201324%0%
Sep 1073°F58°F87°F 201644°F 201324%0%
Sep 1173°F58°F80°F 201647°F 201124%0%
Sep 1272°F58°F84°F 201346°F 201224%0%
Sep 1372°F58°F79°F 201344°F 202525%0%
Sep 1472°F57°F78°F 201142°F 201925%0%
Sep 1572°F57°F79°F 201146°F 201425%0%
Sep 1671°F57°F80°F 202142°F 201625%0%
Sep 1771°F56°F79°F 201541°F 202226%0%
Sep 1871°F56°F80°F 201538°F 201326%0%
Sep 1970°F56°F80°F 201539°F 201326%0%
Sep 2070°F55°F78°F 201535°F 201427%0%
Sep 2170°F55°F75°F 201336°F 201427%0%
Sep 2269°F55°F75°F 201448°F 202527%0%
Sep 2369°F54°F76°F 201640°F 201428%0%
Sep 2469°F54°F77°F 201640°F 201428%0%
Sep 2568°F53°F76°F 202138°F 201228%0%
Sep 2668°F53°F77°F 201738°F 201228%0%
Sep 2768°F53°F77°F 201739°F 201629%0%
Sep 2867°F52°F77°F 201739°F 201529%0%
Sep 2967°F52°F77°F 201439°F 201329%0%
Sep 3067°F52°F77°F 201540°F 201329%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cotuit, 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 (EDT).

September 1
sunrise 6:08 AM, sunset 7:15 PM
September 30
sunrise 6:38 AM, sunset 6:25 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00193821 (Hyannis), public domain. Records: NOAA GHCN-Daily, station USC00192372, 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.