Riverhead climate

Riverhead Weather in October

NOAA 1991-2020 normals for Riverhead Rsch Farm, 6.8 km from Riverhead

Average highs run from 71°F on October 1 to 59°F on October 31, and lows from 55°F to 45°F. Normal precipitation for the month is 4.46 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 Riverhead, in °F, with the record for each date.020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
65°F
Average low
50°F
Precipitation
4.46 in
Record high
88°FOct 2, 2019
Record low
16°FOct 31, 1966
Chance of a freeze
18%
Daylight
11 h 46 min to 10 h 28 min
Cloud cover
57%
Humidity
77%
Dew point
50°F
Wind
11.6 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 171°F55°F79°F 195434°F 200928%0%
Oct 270°F55°F88°F 201932°F 199828%0%
Oct 370°F54°F80°F 200029°F 200328%0%
Oct 469°F54°F82°F 196733°F 200829%0%
Oct 569°F53°F83°F 196733°F 196829%0%
Oct 669°F53°F79°F 195129°F 196529%0%
Oct 768°F53°F78°F 196130°F 200329%0%
Oct 868°F52°F81°F 200729°F 199929%0%
Oct 968°F52°F85°F 201124°F 200129%0%
Oct 1067°F52°F83°F 201130°F 201029%0%
Oct 1167°F51°F80°F 195530°F 196429%0%
Oct 1266°F51°F78°F 195524°F 196429%0%
Oct 1366°F50°F75°F 195427°F 201229%0%
Oct 1466°F50°F77°F 202128°F 200629%0%
Oct 1565°F50°F77°F 201427°F 199929%0%
Oct 1665°F49°F74°F 195628°F 200629%0%
Oct 1765°F49°F75°F 196330°F 201229%0%
Oct 1864°F49°F74°F 200627°F 196529%0%
Oct 1964°F48°F83°F 201620°F 201529%0%
Oct 2063°F48°F76°F 202127°F 200329%0%
Oct 2163°F48°F76°F 196326°F 200829%0%
Oct 2263°F47°F79°F 202427°F 201829%0%
Oct 2362°F47°F73°F 200723°F 200829%0%
Oct 2462°F47°F72°F 200120°F 196929%0%
Oct 2562°F46°F73°F 200124°F 200329%0%
Oct 2661°F46°F70°F 196420°F 201329%0%
Oct 2761°F46°F74°F 196422°F 200629%0%
Oct 2861°F45°F81°F 202323°F 200129%0%
Oct 2960°F45°F71°F 196621°F 200129%0%
Oct 3060°F45°F69°F 196120°F 196229%0%
Oct 3159°F45°F75°F 202416°F 196629%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Riverhead, 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).

October 1
sunrise 6:47 AM, sunset 6:33 PM
October 31
sunrise 7:20 AM, sunset 5:48 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00307134 (Riverhead Rsch Farm), public domain. Records: NOAA GHCN-Daily, station USW00014719, 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.