Peru weather by month
What a typical year looks like in Peru, New York: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Plattsburgh International Airport, 9 km from Peru; records cover 1956–2026.
The year at a glance
- Precipitation a year
- 30.9 in785 mm
- Snow a year
- Rare
- Last spring freeze
- May 9
- First fall freeze
- Oct 9
- Heating degree days
- 7,546
- Cooling degree days
- 393
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −12°−24° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Peru in January
Highs average 28°−2° and lows 10°−12°, with 1.4 in36 mm of precipitation in a typical January.
- Record high
- 58°14° (1966)
- Record low
- −29°−34° (1968)
- Heating degree days
- 1422
- Cooling degree days
- 0
Peru in February
Highs average 31°−1° and lows 11°−12°, with 1.2 in31 mm of precipitation in a typical February.
- Record high
- 65°18° (2017)
- Record low
- −25°−32° (1967)
- Heating degree days
- 1232
- Cooling degree days
- 0
Peru in March
Highs average 40°4° and lows 21°−6°, with 1.3 in34 mm of precipitation in a typical March.
- Record high
- 78°26° (2012)
- Record low
- −15°−26° (2015)
- Heating degree days
- 1077
- Cooling degree days
- 0
Peru in April
Highs average 54°12° and lows 33°1°, with 2.6 in65 mm of precipitation in a typical April.
- Record high
- 93°34° (2009)
- Record low
- 10°−12° (1964)
- Heating degree days
- 646
- Cooling degree days
- 1
Peru in May
Highs average 68°20° and lows 44°7°, with 2.9 in73 mm of precipitation in a typical May.
- Record high
- 95°35° (1962)
- Record low
- 24°−4° (1966)
- Heating degree days
- 291
- Cooling degree days
- 13
Peru in June
Highs average 75°24° and lows 53°12°, with 4.1 in103 mm of precipitation in a typical June.
- Record high
- 101°38° (2025)
- Record low
- 33°1° (2009)
- Heating degree days
- 84
- Cooling degree days
- 66
Peru in July
Highs average 81°27° and lows 59°15°, with 3.6 in92 mm of precipitation in a typical July.
- Record high
- 98°37° (1966)
- Record low
- 42°6° (1965)
- Heating degree days
- 12
- Cooling degree days
- 164
Peru in August
Highs average 79°26° and lows 57°14°, with 3.6 in91 mm of precipitation in a typical August.
- Record high
- 95°35° (1959)
- Record low
- 37°3° (1965)
- Heating degree days
- 29
- Cooling degree days
- 113
Peru in September
Highs average 71°22° and lows 49°9°, with 3.1 in79 mm of precipitation in a typical September.
- Record high
- 94°34° (2018)
- Record low
- 28°−2° (1965)
- Heating degree days
- 194
- Cooling degree days
- 35
Peru in OctoberThis month
Highs average 58°14° and lows 38°4°, with 3 in77 mm of precipitation in a typical October.
- Record high
- 86°30° (1963)
- Record low
- 17°−8° (1966)
- Heating degree days
- 528
- Cooling degree days
- 1
Peru in November
Highs average 46°8° and lows 29°−2°, with 2.3 in59 mm of precipitation in a typical November.
- Record high
- 77°25° (2024)
- Record low
- −5°−21° (2018)
- Heating degree days
- 833
- Cooling degree days
- 0
Peru in December
Highs average 34°1° and lows 19°−7°, with 1.8 in45 mm of precipitation in a typical December.
- Record high
- 71°22° (2015)
- Record low
- −21°−29° (1970)
- Heating degree days
- 1198
- Cooling degree days
- 0