Winthrop weather by month
What a typical year looks like in Winthrop, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Massena International Airport, 15 km from Winthrop; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 33.9 in862 mm
- Snow a year
- Rare
- Last spring freeze
- May 8
- First fall freeze
- Oct 4
- Heating degree days
- 7,988
- Cooling degree days
- 406
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −18°−28° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
Winthrop in January
Highs average 25°−4° and lows 6°−14°, with 2.1 in54 mm of precipitation in a typical January.
- Record high
- 67°19° (1995)
- Record low
- −44°−42° (1957)
- Heating degree days
- 1530
- Cooling degree days
- 0
Winthrop in February
Highs average 28°−2° and lows 7°−14°, with 1.6 in40 mm of precipitation in a typical February.
- Record high
- 69°21° (2024)
- Record low
- −38°−39° (1993)
- Heating degree days
- 1323
- Cooling degree days
- 0
Winthrop in March
Highs average 38°3° and lows 19°−7°, with 2 in52 mm of precipitation in a typical March.
- Record high
- 84°29° (1998)
- Record low
- −26°−32° (1980)
- Heating degree days
- 1133
- Cooling degree days
- 0
Winthrop in April
Highs average 54°12° and lows 32°0°, with 2.9 in74 mm of precipitation in a typical April.
- Record high
- 89°32° (1990)
- Record low
- 6°−14° (1954)
- Heating degree days
- 663
- Cooling degree days
- 1
Winthrop in May
Highs average 68°20° and lows 44°7°, with 3.1 in80 mm of precipitation in a typical May.
- Record high
- 96°36° (2010)
- Record low
- 20°−7° (1974)
- Heating degree days
- 300
- Cooling degree days
- 17
Winthrop in June
Highs average 76°25° and lows 53°12°, with 3.7 in94 mm of precipitation in a typical June.
- Record high
- 97°36° (1994)
- Record low
- 31°−1° (1986)
- Heating degree days
- 84
- Cooling degree days
- 78
Winthrop in July
Highs average 81°27° and lows 58°15°, with 3.5 in88 mm of precipitation in a typical July.
- Record high
- 99°37° (2020)
- Record low
- 38°3° (1978)
- Heating degree days
- 17
- Cooling degree days
- 157
Winthrop in August
Highs average 79°26° and lows 56°13°, with 3.4 in85 mm of precipitation in a typical August.
- Record high
- 100°38° (1975)
- Record low
- 35°2° (1965)
- Heating degree days
- 38
- Cooling degree days
- 117
Winthrop in September
Highs average 71°22° and lows 48°9°, with 3.5 in89 mm of precipitation in a typical September.
- Record high
- 95°35° (1953)
- Record low
- 24°−4° (1956)
- Heating degree days
- 199
- Cooling degree days
- 34
Winthrop in OctoberThis month
Highs average 58°14° and lows 37°3°, with 3.4 in87 mm of precipitation in a typical October.
- Record high
- 87°31° (2023)
- Record low
- 15°−9° (1967)
- Heating degree days
- 546
- Cooling degree days
- 2
Winthrop in November
Highs average 45°7° and lows 27°−3°, with 2.6 in66 mm of precipitation in a typical November.
- Record high
- 78°26° (1948)
- Record low
- −9°−23° (2018)
- Heating degree days
- 878
- Cooling degree days
- 0
Winthrop in December
Highs average 32°0° and lows 16°−9°, with 2.1 in53 mm of precipitation in a typical December.
- Record high
- 68°20° (2001)
- Record low
- −33°−36° (1970)
- Heating degree days
- 1277
- Cooling degree days
- 0