Brightwaters climate

Brightwaters Weather in October

NOAA 1991-2020 normals for Islip Li Macarthur AP, 16.1 km from Brightwaters

Average highs run from 70°F on October 1 to 59°F on October 31, and lows from 53°F to 42°F. Normal precipitation for the month is 3.97 in over about 9 wet days.

October day by day

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

Normal daily high and low temperature at Brightwaters, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
64°F
Average low
47°F
Precipitation
3.97 in
Record high
90°FOct 2, 2019
Record low
31°FOct 26, 2013
Chance of a freeze
43%
Daylight
11 h 45 min to 10 h 28 min
Cloud cover
55%
Humidity
77%
Dew point
51°F
Wind
12.5 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
Oct 170°F53°F81°F 201344°F 200930%0%
Oct 269°F53°F90°F 201941°F 200930%0%
Oct 369°F52°F81°F 200238°F 200330%0%
Oct 468°F52°F83°F 201344°F 200830%0%
Oct 568°F51°F83°F 200242°F 200330%0%
Oct 668°F51°F81°F 200739°F 200330%0%
Oct 767°F51°F82°F 200738°F 200330%0%
Oct 867°F50°F87°F 200737°F 199930%0%
Oct 967°F50°F84°F 201133°F 200130%0%
Oct 1066°F49°F81°F 201135°F 200030%0%
Oct 1166°F49°F75°F 201042°F 200930%0%
Oct 1266°F49°F76°F 202442°F 200030%0%
Oct 1365°F48°F74°F 201533°F 201230%0%
Oct 1465°F48°F78°F 202136°F 200630%0%
Oct 1564°F48°F77°F 200037°F 200630%0%
Oct 1664°F47°F76°F 200837°F 200630%0%
Oct 1764°F47°F76°F 201639°F 201230%0%
Oct 1863°F46°F76°F 201634°F 201530%0%
Oct 1963°F46°F84°F 201633°F 201530%0%
Oct 2063°F46°F78°F 202135°F 200330%0%
Oct 2162°F45°F78°F 202436°F 201830%0%
Oct 2262°F45°F81°F 202433°F 201830%0%
Oct 2362°F45°F74°F 200735°F 200830%0%
Oct 2461°F44°F73°F 200133°F 200830%0%
Oct 2561°F44°F78°F 202232°F 200330%0%
Oct 2661°F44°F77°F 202331°F 201330%0%
Oct 2760°F43°F73°F 202333°F 200630%1%
Oct 2860°F43°F82°F 202335°F 200130%1%
Oct 2960°F43°F73°F 201532°F 200131%1%
Oct 3059°F42°F74°F 201632°F 201131%1%
Oct 3159°F42°F79°F 202431°F 201131%1%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Brightwaters, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

October 1
sunrise 6:50 AM, sunset 6:35 PM
October 31
sunrise 7:22 AM, sunset 5:50 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00004781 (Islip Li Macarthur AP), 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.