Addison weather by month
What a typical year looks like in Addison, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Tioga Hammond Dam, 24 km from Addison; records cover 1973–2026.
The year at a glance
- Precipitation a year
- 36.4 in924 mm
- Snow a year
- 43 in110 cm
- Last spring freeze
- May 5
- First fall freeze
- Oct 12
- Heating degree days
- 6,945
- Cooling degree days
- 440
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −6°−21° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Addison in January
Highs average 32°0° and lows 15°−9°, with 2.2 in56 mm of precipitation and 10 in26 cm of snow in a typical January.
- Record high
- 63°17° (1975)
- Record low
- −22°−30° (1984)
- Heating degree days
- 1282
- Cooling degree days
- 0
Addison in February
Highs average 35°2° and lows 15°−9°, with 1.7 in43 mm of precipitation and 11 in28 cm of snow in a typical February.
- Record high
- 72°22° (2017)
- Record low
- −17°−27° (2014)
- Heating degree days
- 1118
- Cooling degree days
- 0
Addison in March
Highs average 43°6° and lows 22°−5°, with 2.7 in69 mm of precipitation and 8 in19 cm of snow in a typical March.
- Record high
- 81°27° (1986)
- Record low
- −14°−26° (1993)
- Heating degree days
- 998
- Cooling degree days
- 0
Addison in April
Highs average 57°14° and lows 33°0°, with 3.3 in83 mm of precipitation and 1.7 in4.3 cm of snow in a typical April.
- Record high
- 94°34° (1977)
- Record low
- 11°−12° (2016)
- Heating degree days
- 607
- Cooling degree days
- 1
Addison in May
Highs average 69°20° and lows 44°7°, with 3.2 in82 mm of precipitation in a typical May.
- Record high
- 92°33° (1977)
- Record low
- 22°−6° (2020)
- Heating degree days
- 289
- Cooling degree days
- 20
Addison in June
Highs average 77°25° and lows 53°12°, with 3.8 in95 mm of precipitation in a typical June.
- Record high
- 95°35° (2025)
- Record low
- 34°1° (1988)
- Heating degree days
- 73
- Cooling degree days
- 79
Addison in July
Highs average 82°28° and lows 58°14°, with 3.8 in96 mm of precipitation in a typical July.
- Record high
- 103°39° (2011)
- Record low
- 42°6° (2014)
- Heating degree days
- 17
- Cooling degree days
- 161
Addison in August
Highs average 80°27° and lows 57°14°, with 3.5 in90 mm of precipitation in a typical August.
- Record high
- 96°36° (1975)
- Record low
- 39°4° (1976)
- Heating degree days
- 27
- Cooling degree days
- 128
Addison in September
Highs average 73°23° and lows 50°10°, with 3.7 in94 mm of precipitation in a typical September.
- Record high
- 92°33° (1991)
- Record low
- 25°−4° (1991)
- Heating degree days
- 163
- Cooling degree days
- 47
Addison in OctoberThis month
Highs average 60°16° and lows 39°4°, with 3.4 in86 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 83°28° (2019)
- Record low
- 16°−9° (1976)
- Heating degree days
- 486
- Cooling degree days
- 4
Addison in November
Highs average 48°9° and lows 30°−1°, with 2.6 in66 mm of precipitation and 2.9 in7.4 cm of snow in a typical November.
- Record high
- 78°26° (2024)
- Record low
- 3°−16° (2018)
- Heating degree days
- 786
- Cooling degree days
- 0
Addison in December
Highs average 37°3° and lows 22°−6°, with 2.5 in63 mm of precipitation and 10 in24 cm of snow in a typical December.
- Record high
- 67°19° (2012)
- Record low
- −15°−26° (1989)
- Heating degree days
- 1099
- Cooling degree days
- 0