Irondequoit climate

Irondequoit Weather in December

NOAA 1991-2020 normals for Rochester Gtr Intl AP, 13.3 km from Irondequoit

Average highs run from 43°F on December 1 to 35°F on December 31, and lows from 29°F to 22°F. Normal precipitation for the month is 2.67 in over about 18 wet days.

December day by day

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

Normal daily high and low temperature at Irondequoit, in °F, with the record for each date.-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

December at a glance

Average high
39°F
Average low
25°F
Precipitation
2.67 in
Snowfall
22.3 in
Record high
72°FDec 3, 1982
Record low
-16°FDec 20, 1942
Chance of a freeze
100%
Daylight
9 h 13 min to 9 h 03 min
Cloud cover
82%
Humidity
88%
Dew point
26°F
Wind
7.4 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
Dec 143°F29°F64°F 19345°F 196355%33%
Dec 243°F29°F65°F 19822°F 197656%34%
Dec 342°F29°F72°F 1982-3°F 194056%34%
Dec 442°F29°F70°F 2012-3°F 194056%35%
Dec 542°F28°F68°F 19823°F 192657%36%
Dec 641°F28°F68°F 19988°F 194057%37%
Dec 741°F28°F69°F 19984°F 192657%37%
Dec 841°F27°F68°F 19664°F 197757%38%
Dec 940°F27°F63°F 19662°F 200258%39%
Dec 1040°F27°F58°F 1946-1°F 197758%40%
Dec 1140°F27°F64°F 2021-6°F 197758%40%
Dec 1239°F26°F60°F 1979-8°F 198859%41%
Dec 1339°F26°F59°F 19271°F 197659%41%
Dec 1439°F26°F69°F 2015-4°F 198959%42%
Dec 1539°F26°F60°F 1975-4°F 194359%42%
Dec 1638°F25°F65°F 2021-1°F 194260%43%
Dec 1738°F25°F60°F 1984-4°F 201360%43%
Dec 1838°F25°F55°F 20250°F 197360%44%
Dec 1938°F25°F60°F 1957-3°F 194260%44%
Dec 2037°F24°F63°F 1957-16°F 194260%45%
Dec 2137°F24°F57°F 2018-3°F 194461%45%
Dec 2237°F24°F69°F 1949-1°F 198961%46%
Dec 2337°F24°F64°F 2015-2°F 194561%46%
Dec 2436°F23°F68°F 2015-7°F 196061%47%
Dec 2536°F23°F66°F 1982-12°F 198061%47%
Dec 2636°F23°F66°F 19822°F 198361%48%
Dec 2736°F23°F62°F 1936-2°F 199362%48%
Dec 2836°F22°F68°F 1982-1°F 193362%49%
Dec 2935°F22°F63°F 1984-7°F 193362%49%
Dec 3035°F22°F62°F 2022-6°F 193362%50%
Dec 3135°F22°F64°F 1972-5°F 196362%50%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Irondequoit, in percent, and of at least 0.1 inch of snowfall.0204060801102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EST).

December 1
sunrise 7:23 AM, sunset 4:36 PM
December 31
sunrise 7:42 AM, sunset 4:45 PM

Every day of December: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00014768 (Rochester Gtr Intl AP), public domain. Records: NOAA GHCN-Daily, station USW00014768, 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.