Peru, New York climate: Normal weather by month, frost dates and records
Peru's normal year runs from 10°F January nights to 82°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.9°C, January lows of −12°C, July highs of 28°C.
- NOAA stationPeru (2 mi WSW)
- Station IDUSC00306538
- Location44.57°N 73.57°W
- Elevation510 ft (155 m)
- From the center2 miles
- Population (census place)1,880
On October 23, the normal high in Peru is 56°F and the normal low 37°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Peru.
- Jan 28° 10°
- Feb 32° 12°
- Mar 41° 22°
- Apr 56° 34°
- May 69° 46°
- Jun 78° 55°
- Jul 82° 60°
- Aug 80° 57°
- Sep 73° 50°
- Oct 59° 39°
- Nov 46° 29°
- Dec 34° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Peru each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 10°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 28°F | 10°F | 19.1°F | – | <1 | 30 | 9 h 10 min |
| February | 32°F | 12°F | 22.0°F | – | <1 | 26 | 10 h 30 min |
| March | 41°F | 22°F | 31.6°F | – | <1 | 26 | 11 h 50 min |
| April | 56°F | 34°F | 44.8°F | – | <1 | 14 | 13 h 30 min |
| May | 69°F | 46°F | 57.5°F | – | <1 | 2 | 14 h 50 min |
| June | 78°F | 55°F | 66.3°F | – | 2 | <1 | 15 h 30 min |
| July | 82°F | 60°F | 70.7°F | – | 3 | <1 | 15 h 20 min |
| August | 80°F | 57°F | 68.7°F | – | 2 | <1 | 14 h 10 min |
| September | 73°F | 50°F | 61.3°F | – | 1 | <1 | 12 h 40 min |
| October | 59°F | 39°F | 49.1°F | – | <1 | 7 | 11 h |
| November | 46°F | 29°F | 37.5°F | – | <1 | 20 | 9 h 40 min |
| December | 34°F | 18°F | 26.4°F | – | <1 | 28 | 8 h 50 min |
| Year (annual) | 57°F | 36°F | 46.2°F | – | 7 | 152 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −2°C | −12°C | −7.2°C |
| February | 0°C | −11°C | −5.6°C |
| March | 5°C | −6°C | −0.2°C |
| April | 13°C | 1°C | 7.1°C |
| May | 21°C | 8°C | 14.2°C |
| June | 25°C | 13°C | 19.1°C |
| July | 28°C | 15°C | 21.5°C |
| August | 27°C | 14°C | 20.4°C |
| September | 23°C | 10°C | 16.3°C |
| October | 15°C | 4°C | 9.5°C |
| November | 8°C | −2°C | 3.1°C |
| December | 1°C | −8°C | −3.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, South Hero (14 miles away), gets 50 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00306538; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Peru?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00306538.
When is the last frost in Peru?
In Peru, the last spring frost (32°F) comes after May 4 in half of years and after May 17 in one year in ten; the first autumn frost comes before October 4 in half of years and before September 23 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 41 year in 10 after May 17; 9 in 10 after April 24
- First autumn frost, half of years before
- October 41 year in 10 before September 23; 9 in 10 before October 20
NOAA puts the median frost-free season at 152 days, and the season without a hard freeze (28°F) at 175 days.
A hard freeze (28°F) comes after April 24 in half of springs and before October 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Peru in zone 5a in ZIP code 12972, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Peru's NOAA station is in zone 5a: the coldest night of a typical year reaches −16°F (28 complete years).
Frost dates for every NOAA station in New York · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00306538; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Peru?
In a normal year in Peru, 7 days a year reach 90°F and 152 nights fall to 32°F or colder.
- Days at 90°F or more
- 7a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 152a normal year
- Days that stay below freezing
- 57high of 32°F or less
The highest temperature in this station's record (since 1938) is 102°F, on August 14, 1944; the lowest is −34°F, on January 15, 1957.
The wettest calendar year on that record is 1954, with 38.77 in; the snowiest season is 1970–71, with 107.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00306538; records: ACIS (NOAA Regional Climate Centers), station USC00306538. Records use complete months only; a month missing more than three days is left out.
How sunny is Peru?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Peru, 3.5 kWh per square metre a day. August is the sunniest month (75%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 60% | 1.5 |
| February | 62% | 2.3 |
| March | 65% | 3.4 |
| April | 66% | 4.5 |
| May | 67% | 5.2 |
| June | 69% | 5.6 |
| July | 74% | 5.7 |
| August | 75% | 5.1 |
| September | 75% | 4.0 |
| October | 62% | 2.4 |
| November | 60% | 1.6 |
| December | 54% | 1.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Peru need?
A normal year in Peru brings 7,304 heating degree days, 36% more than the median U.S. place (5,373), and 503 cooling degree days, 45% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,474 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,423 | 0 |
| February | 1,203 | 0 |
| March | 1,035 | 0 |
| April | 609 | 3 |
| May | 260 | 26 |
| June | 61 | 100 |
| July | 9 | 186 |
| August | 27 | 140 |
| September | 159 | 47 |
| October | 495 | 2 |
| November | 825 | 0 |
| December | 1,198 | 0 |
| Year (annual) | 7,304 | 503 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00306538. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Peru been warmer than normal lately?
Over 59 complete years from 1939 to 2016, the station's annual mean temperature rose at a fitted 3.4°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Peru's climate compare?
Peru is warmer than 44 of the other 130 places with their own NOAA record in New York. Across the 7,247 U.S. stations with normals, its annual mean of 46.2°F is warmer than 24%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Peru share this climate record?
Au Sable Forks has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Au Sable Forks, NY559 people · 9 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Peru's climate
What is the coldest month in Peru?
January, with a normal high of 28°F and a normal low of 10°F. The warmest is July (82°F by day, 60°F at night).
Does it snow in Peru?
Yes. NOAA publishes no 1991-2020 snowfall normal for Peru's NOAA station; the nearest record that keeps one, South Hero (14 miles away), records 50 inches of snow in a normal year.
What plant hardiness zone is Peru in?
The USDA's 2023 map puts Peru in zone 5a in ZIP code 12972, the nearest ZIP area. By the same method at Peru's NOAA station, the coldest night of a typical year reaches −16°F (28 years, 1991-2020): zone 5a.
How late can frost come in Peru?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 17. Waiting until May 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- New York climateThe statewide normals and every place in the state
- Plattsburgh, NY7 miles from this station, 45.3°F a year
- Dannemora, NY13 miles from this station, 44.8°F a year
- South Hero, VT14 miles from this station, 46.7°F a year
- Willsboro, NY16 miles from this station, 46.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made