Watertown weather by month
What a typical year looks like in Watertown, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Watertown International Airport, 9 km from Watertown; records cover 1949–2026.
The year at a glance
- Precipitation a year
- 37.1 in942 mm
- Snow a year
- Rare
- Last spring freeze
- May 13
- First fall freeze
- Oct 2
- Heating degree days
- 7,523
- Cooling degree days
- 385
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −20°−29° (heating, 99%) and 89°32° (cooling, 1%).
Month by month
Watertown in January
Highs average 30°−1° and lows 10°−12°, with 2.9 in73 mm of precipitation in a typical January.
- Record high
- 66°19° (1995)
- Record low
- −43°−42° (1994)
- Heating degree days
- 1398
- Cooling degree days
- 0
Watertown in February
Highs average 31°0° and lows 11°−12°, with 2.2 in55 mm of precipitation in a typical February.
- Record high
- 69°21° (2024)
- Record low
- −37°−38° (2016)
- Heating degree days
- 1230
- Cooling degree days
- 0
Watertown in March
Highs average 40°4° and lows 21°−6°, with 2.4 in60 mm of precipitation in a typical March.
- Record high
- 84°29° (1977)
- Record low
- −24°−31° (1984)
- Heating degree days
- 1074
- Cooling degree days
- 0
Watertown in April
Highs average 54°12° and lows 33°0°, with 3.1 in78 mm of precipitation in a typical April.
- Record high
- 89°32° (1990)
- Record low
- 6°−14° (1965)
- Heating degree days
- 658
- Cooling degree days
- 1
Watertown in May
Highs average 66°19° and lows 44°7°, with 3 in75 mm of precipitation in a typical May.
- Record high
- 91°33° (2018)
- Record low
- 18°−8° (1966)
- Heating degree days
- 326
- Cooling degree days
- 14
Watertown in June
Highs average 75°24° and lows 53°12°, with 3.1 in78 mm of precipitation in a typical June.
- Record high
- 95°35° (1949)
- Record low
- 29°−2° (1964)
- Heating degree days
- 100
- Cooling degree days
- 64
Watertown in July
Highs average 79°26° and lows 59°15°, with 3 in76 mm of precipitation in a typical July.
- Record high
- 97°36° (1953)
- Record low
- 33°1° (1962)
- Heating degree days
- 22
- Cooling degree days
- 146
Watertown in August
Highs average 78°26° and lows 57°14°, with 3.2 in81 mm of precipitation in a typical August.
- Record high
- 96°36° (1955)
- Record low
- 30°−1° (1969)
- Heating degree days
- 40
- Cooling degree days
- 116
Watertown in September
Highs average 71°22° and lows 49°9°, with 3.6 in90 mm of precipitation in a typical September.
- Record high
- 96°36° (1953)
- Record low
- 22°−6° (1991)
- Heating degree days
- 190
- Cooling degree days
- 40
Watertown in OctoberThis month
Highs average 58°15° and lows 39°4°, with 4.2 in107 mm of precipitation in a typical October.
- Record high
- 84°29° (1951)
- Record low
- 12°−11° (1972)
- Heating degree days
- 506
- Cooling degree days
- 4
Watertown in November
Highs average 47°8° and lows 30°−1°, with 3.4 in86 mm of precipitation in a typical November.
- Record high
- 77°25° (1971)
- Record low
- −7°−22° (2018)
- Heating degree days
- 809
- Cooling degree days
- 0
Watertown in December
Highs average 36°2° and lows 19°−7°, with 3.1 in80 mm of precipitation in a typical December.
- Record high
- 69°21° (2012)
- Record low
- −37°−38° (1980)
- Heating degree days
- 1170
- Cooling degree days
- 0