Irondequoit weather by month
What a typical year looks like in Irondequoit, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Frederick Douglass Greater Rochester International Airport, 13 km from Irondequoit; records cover 1872–2026.
The year at a glance
- Precipitation a year
- 35.1 in891 mm
- Snow a year
- 102 in259 cm
- Last spring freeze
- Apr 28
- First fall freeze
- Oct 24
- Heating degree days
- 6,274
- Cooling degree days
- 676
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 0°−18° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Irondequoit in January
Highs average 33°1° and lows 19°−7°, with 2.6 in65 mm of precipitation and 27 in70 cm of snow in a typical January.
- Record high
- 74°23° (1950)
- Record low
- −17°−27° (1994)
- Heating degree days
- 1203
- Cooling degree days
- 0
Irondequoit in February
Highs average 35°2° and lows 20°−7°, with 2.1 in54 mm of precipitation and 23 in59 cm of snow in a typical February.
- Record high
- 73°23° (1997)
- Record low
- −22°−30° (1934)
- Heating degree days
- 1053
- Cooling degree days
- 0
Irondequoit in March
Highs average 44°6° and lows 27°−3°, with 2.5 in63 mm of precipitation and 18 in45 cm of snow in a typical March.
- Record high
- 86°30° (1905)
- Record low
- −9°−23° (2014)
- Heating degree days
- 924
- Cooling degree days
- 0
Irondequoit in April
Highs average 57°14° and lows 37°3°, with 3 in76 mm of precipitation and 3 in8 cm of snow in a typical April.
- Record high
- 93°34° (1970)
- Record low
- 7°−14° (1923)
- Heating degree days
- 549
- Cooling degree days
- 4
Irondequoit in May
Highs average 69°21° and lows 48°9°, with 2.9 in73 mm of precipitation and 0.1 in0.3 cm of snow in a typical May.
- Record high
- 94°34° (1974)
- Record low
- 26°−3° (1970)
- Heating degree days
- 232
- Cooling degree days
- 40
Irondequoit in June
Highs average 78°26° and lows 57°14°, with 3.4 in86 mm of precipitation in a typical June.
- Record high
- 100°38° (1953)
- Record low
- 35°2° (1945)
- Heating degree days
- 49
- Cooling degree days
- 128
Irondequoit in July
Highs average 83°28° and lows 62°17°, with 3.6 in90 mm of precipitation in a typical July.
- Record high
- 102°39° (1936)
- Record low
- 42°6° (1963)
- Heating degree days
- 6
- Cooling degree days
- 234
Irondequoit in August
Highs average 81°27° and lows 61°16°, with 3.3 in84 mm of precipitation in a typical August.
- Record high
- 99°37° (1948)
- Record low
- 36°2° (1965)
- Heating degree days
- 12
- Cooling degree days
- 190
Irondequoit in September
Highs average 74°23° and lows 54°12°, with 3.2 in81 mm of precipitation in a typical September.
- Record high
- 99°37° (1953)
- Record low
- 28°−2° (1947)
- Heating degree days
- 114
- Cooling degree days
- 72
Irondequoit in OctoberThis month
Highs average 61°16° and lows 43°6°, with 3.2 in82 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 91°33° (1951)
- Record low
- 19°−7° (1879)
- Heating degree days
- 404
- Cooling degree days
- 8
Irondequoit in November
Highs average 49°10° and lows 34°1°, with 2.8 in70 mm of precipitation and 8 in21 cm of snow in a typical November.
- Record high
- 81°27° (1950)
- Record low
- 1°−17° (1875)
- Heating degree days
- 704
- Cooling degree days
- 0
Irondequoit in December
Highs average 39°4° and lows 25°−4°, with 2.7 in68 mm of precipitation and 22 in57 cm of snow in a typical December.
- Record high
- 72°22° (1982)
- Record low
- −16°−27° (1942)
- Heating degree days
- 1024
- Cooling degree days
- 0