Greenwich weather by month
What a typical year looks like in Greenwich, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Buskirk, 18 km from Greenwich; records cover 2004–2026.
The year at a glance
- Precipitation a year
- 43.4 in1101 mm
- Snow a year
- Rare
- Last spring freeze
- May 7
- First fall freeze
- Oct 11
- Heating degree days
- 7,030
- Cooling degree days
- 457
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Greenwich in January
Highs average 33°1° and lows 11°−11°, with 2.7 in70 mm of precipitation in a typical January.
- Record high
- 66°19° (2007)
- Record low
- −25°−32° (2018)
- Heating degree days
- 1326
- Cooling degree days
- 0
Greenwich in February
Highs average 36°2° and lows 12°−11°, with 2.4 in60 mm of precipitation in a typical February.
- Record high
- 75°24° (2018)
- Record low
- −21°−29° (2026)
- Heating degree days
- 1158
- Cooling degree days
- 0
Greenwich in March
Highs average 44°7° and lows 20°−6°, with 3.2 in82 mm of precipitation in a typical March.
- Record high
- 79°26° (2012)
- Record low
- −9°−23° (2015)
- Heating degree days
- 1013
- Cooling degree days
- 0
Greenwich in April
Highs average 59°15° and lows 33°1°, with 3.4 in87 mm of precipitation in a typical April.
- Record high
- 92°33° (2009)
- Record low
- 6°−14° (2016)
- Heating degree days
- 576
- Cooling degree days
- 3
Greenwich in May
Highs average 71°21° and lows 44°7°, with 3.6 in91 mm of precipitation in a typical May.
- Record high
- 93°34° (2006)
- Record low
- 26°−3° (2020)
- Heating degree days
- 265
- Cooling degree days
- 20
Greenwich in June
Highs average 78°26° and lows 53°12°, with 4.6 in116 mm of precipitation in a typical June.
- Record high
- 96°36° (2008)
- Record low
- 33°1° (2009)
- Heating degree days
- 67
- Cooling degree days
- 87
Greenwich in July
Highs average 83°28° and lows 58°14°, with 4.6 in116 mm of precipitation in a typical July.
- Record high
- 96°36° (2018)
- Record low
- 43°6° (2007)
- Heating degree days
- 12
- Cooling degree days
- 174
Greenwich in August
Highs average 81°27° and lows 56°13°, with 4.2 in106 mm of precipitation in a typical August.
- Record high
- 96°36° (2022)
- Record low
- 40°4° (2025)
- Heating degree days
- 26
- Cooling degree days
- 123
Greenwich in September
Highs average 74°23° and lows 48°9°, with 3.9 in98 mm of precipitation in a typical September.
- Record high
- 93°34° (2018)
- Record low
- 27°−3° (2020)
- Heating degree days
- 170
- Cooling degree days
- 46
Greenwich in OctoberThis month
Highs average 62°16° and lows 38°3°, with 3.9 in100 mm of precipitation in a typical October.
- Record high
- 86°30° (2025)
- Record low
- 17°−8° (2020)
- Heating degree days
- 482
- Cooling degree days
- 4
Greenwich in November
Highs average 49°9° and lows 28°−2°, with 3.3 in84 mm of precipitation in a typical November.
- Record high
- 81°27° (2024)
- Record low
- −2°−19° (2018)
- Heating degree days
- 807
- Cooling degree days
- 0
Greenwich in December
Highs average 38°3° and lows 19°−7°, with 3.7 in93 mm of precipitation in a typical December.
- Record high
- 68°20° (2015)
- Record low
- −14°−26° (2017)
- Heating degree days
- 1128
- Cooling degree days
- 0