Penn Yan, NY climate
Penn Yan has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 81°, a January night drops to 17°, and about 57 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Penn Yan feels like
Winter
Spring
Summer
Fall
Penn Yan weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 17° | 1.8" | 13.5" | 14 | 21 | 14° – 34° |
| February | 35° | 18° | 1.7" | 13.3" | 11 | 21 | 12° – 35° |
| March | 43° | 25° | 2.3" | 12.8" | 12 | 15 | 27° – 47° |
| April | 56° | 34° | 2.8" | 1.8" | 13 | 1 | 39° – 51° |
| May | 69° | 46° | 3.0" | 0 | 13 | 0 | 51° – 63° |
| June | 77° | 56° | 3.3" | 0 | 13 | 0 | 63° – 71° |
| July | 81° | 60° | 3.8" | 0 | 12 | 0 | 66° – 75° |
| August | 80° | 59° | 3.1" | 0 | 12 | 0 | 65° – 74° |
| September | 73° | 52° | 3.5" | 0 | 12 | 0 | 59° – 67° |
| October | 60° | 41° | 3.3" | 0.1" | 16 | 0 | 46° – 57° |
| November | 48° | 32° | 2.3" | 4.7" | 12 | 4 | 34° – 46° |
| December | 37° | 24° | 2.3" | 10.4" | 13 | 15 | 22° – 41° |
| Year | 58° | 39° | 33.2" | 56.6" | 153 | 77 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Penn Yan
Penn Yan gets 33 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 153 days a year. Snow covers the ground about 77 days of the year.
About 173 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 22. That leaves about 173 frost-free days for gardens, shorter than 57% of U.S. towns.
Heating and cooling a home in Penn Yan
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Penn Yan, 92% of that work is heating and 8% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Penn Yan and its neighbors
Penn Yan borders 3 towns with climate data. January nights across them vary by 0.9°. Milo has the coldest January nights (16°) and Jerusalem the hottest July afternoons (81°). Penn Yan’s January low is 17° and its July high 81°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Penn Yan compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Penn Yan averaged 1.3° warmer than the 1900s. The biggest change is in February (+2.7°). The shift is larger than in 55% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Penn Yan’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 12° to 35°. September is the most reliable, staying within 7°.
Common questions about Penn Yan’s climate
What is the coldest month in Penn Yan?
January, with a typical high of 32° and a low of 17°.
What is the hottest month in Penn Yan?
July, with a typical high of 81° and a low of 60°. About 9 days a year reach 90°.
How much snow does Penn Yan get?
About 57 inches in a normal winter, most of it in January.
When is the first frost in Penn Yan?
In half of years the first 32° night comes by October 22, and the last spring frost by April 30.
What is the rainiest month in Penn Yan?
July, with 3.8 inches of rain and melted snow. The year totals 33 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Penn Yan itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Geneva Rsch Farm, NY (15 mi, snow) and Penn Yan Airport, NY (1 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.