Oneonta weather by month
What a typical year looks like in Oneonta, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at East Sidney, 19 km from Oneonta; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 45.3 in1150 mm
- Snow a year
- Rare
- Last spring freeze
- May 22
- First fall freeze
- Oct 11
- Heating degree days
- 7,323
- Cooling degree days
- 371
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Oneonta in January
Highs average 32°0° and lows 11°−11°, with 2.9 in73 mm of precipitation in a typical January.
- Record high
- 64°18° (2020)
- Record low
- −27°−33° (2005)
- Heating degree days
- 1348
- Cooling degree days
- 0
Oneonta in February
Highs average 34°1° and lows 12°−11°, with 2.4 in61 mm of precipitation in a typical February.
- Record high
- 74°23° (2018)
- Record low
- −24°−31° (2015)
- Heating degree days
- 1180
- Cooling degree days
- 0
Oneonta in March
Highs average 43°6° and lows 19°−7°, with 3.3 in85 mm of precipitation in a typical March.
- Record high
- 77°25° (2012)
- Record low
- −14°−26° (2003)
- Heating degree days
- 1055
- Cooling degree days
- 0
Oneonta in April
Highs average 57°14° and lows 32°0°, with 3.9 in98 mm of precipitation in a typical April.
- Record high
- 92°33° (2001)
- Record low
- −1°−18° (2003)
- Heating degree days
- 630
- Cooling degree days
- 1
Oneonta in May
Highs average 69°21° and lows 42°6°, with 3.9 in99 mm of precipitation in a typical May.
- Record high
- 92°33° (2010)
- Record low
- 20°−7° (2008)
- Heating degree days
- 303
- Cooling degree days
- 16
Oneonta in June
Highs average 77°25° and lows 52°11°, with 4.9 in124 mm of precipitation in a typical June.
- Record high
- 96°36° (2001)
- Record low
- 1°−17° (2003)
- Heating degree days
- 85
- Cooling degree days
- 67
Oneonta in July
Highs average 82°28° and lows 57°14°, with 4.5 in113 mm of precipitation in a typical July.
- Record high
- 96°36° (2011)
- Record low
- 35°2° (2004)
- Heating degree days
- 18
- Cooling degree days
- 145
Oneonta in August
Highs average 79°26° and lows 55°13°, with 4.8 in122 mm of precipitation in a typical August.
- Record high
- 102°39° (2001)
- Record low
- 37°3° (2003)
- Heating degree days
- 36
- Cooling degree days
- 99
Oneonta in September
Highs average 73°23° and lows 48°9°, with 3.9 in99 mm of precipitation in a typical September.
- Record high
- 92°33° (2018)
- Record low
- 27°−3° (2020)
- Heating degree days
- 180
- Cooling degree days
- 41
Oneonta in OctoberThis month
Highs average 60°15° and lows 37°3°, with 4.3 in108 mm of precipitation in a typical October.
- Record high
- 86°30° (2023)
- Record low
- 17°−8° (2002)
- Heating degree days
- 515
- Cooling degree days
- 2
Oneonta in November
Highs average 47°8° and lows 28°−2°, with 3.3 in83 mm of precipitation in a typical November.
- Record high
- 80°27° (2015)
- Record low
- −7°−22° (2018)
- Heating degree days
- 828
- Cooling degree days
- 0
Oneonta in December
Highs average 37°3° and lows 20°−7°, with 3.3 in85 mm of precipitation in a typical December.
- Record high
- 66°19° (2006)
- Record low
- −17°−27° (2005)
- Heating degree days
- 1145
- Cooling degree days
- 0