Penn Yan, NY Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Penn Yan's primary NOAA station, PENN YAN AP.
The climate verdict for Penn Yan
Penn Yan, New York has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 49°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 49°F
- average temperature, NOAA 1991-2020 normal
- 64/100
- comfort score, above 49% of station-mapped location scores
- 30.2"
- annual precipitation
- 175 days
- growing season, frost-free days
Penn Yan: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00054778 · Penn Yan, NY 49°F mean · 30.2" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 49°F
- RANK-COOL #2,333
- PHOTO-FINISH ≈ Oswego
- PRCP-MID 30.2"
- SWING-WIDE 47°F
- COMF-MID 64/100
- LOAD-HEAT 6,505 HDD
- STN-1 USW00054778
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Oswego, NY (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every NY station list.
- Penn Yan (this station) 49°F
- Cold Chippewa Lake, OH 49°F
- Hot Westfield, MA 49°F
- Near Oswego, NY 49°F
- Near Hazelton, ID 49°F
Climate Living Index · Penn Yan
Penn Yan: 52/100 · grade D
Penn Yan publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Penn Yan, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 30.2 in · 4.8 from 35 in | 83/100 · B |
| Normal heat + freeze calendar | 141 calendar days | 52/100 · D |
| Frost-free season | 175 days/year | 46/100 · D |
| Annual temperature balance | 48.7°F · 18.8° from 67.5°F | 35/100 · F |
Penn Yan · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Penn Yan is a continental Köppen climate: Dfb
Coldest-month mean 25.1°F and warmest-month mean 71.6°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 71.6°F
- Coldest month
- 25.1°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Penn Yan sits across the climate record
Three NOAA fields for Penn Yan's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 34th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 40th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- 66th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Penn Yan compares across U.S. station-mapped locations
Penn Yan's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 33°F (0°C) | 18°F (-8°C) | 25°F (-4°C) | 1.5" | 27.7 | 0.0 |
| February | 35°F (2°C) | 19°F (-7°C) | 27°F (-3°C) | 1.3" | 25.3 | 0.0 |
| March | 43°F (6°C) | 25°F (-4°C) | 34°F (1°C) | 2.1" | 22.8 | 0.0 |
| April | 56°F (13°C) | 36°F (2°C) | 46°F (8°C) | 2.8" | 10.9 | 0.0 |
| May | 69°F (20°C) | 47°F (8°C) | 58°F (14°C) | 2.9" | 0.8 | 0.4 |
| June | 77°F (25°C) | 57°F (14°C) | 67°F (19°C) | 2.8" | 0.0 | 1.9 |
| July | 81°F (27°C) | 62°F (17°C) | 72°F (22°C) | 3.4" | 0.0 | 3.8 |
| August | 80°F (27°C) | 60°F (16°C) | 70°F (21°C) | 2.8" | 0.0 | 1.9 |
| September | 73°F (23°C) | 53°F (11°C) | 63°F (17°C) | 3.9" | 0.1 | 0.9 |
| October | 61°F (16°C) | 43°F (6°C) | 52°F (11°C) | 2.9" | 2.8 | 0.0 |
| November | 48°F (9°C) | 33°F (0°C) | 41°F (5°C) | 2.1" | 14.3 | 0.0 |
| December | 38°F (3°C) | 25°F (-4°C) | 31°F (0°C) | 1.8" | 24.7 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 82°F around July 19, short of 90°F on every date, while 141 dates carry a normal low at or below freezing, the coldest 16°F near January 24.
The freezing stretch
The normal low stays at or below 32°F into April 6, then returns to freezing around November 18, covering 141 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is October 13, when 46% of years recorded at least a hundredth of an inch. The driest is January 20 at 33%. Summed across the calendar, that is about 143 wet dates a year.
The widest day
May 9 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Penn Yan.
Where Penn Yan Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Penn Yan earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
10.0 days with precipitation
9.9 days with precipitation
11.3 days with precipitation
12.6 days with precipitation
13.4 days with precipitation
13.2 days with precipitation
11.5 days with precipitation
13.1 days with precipitation
12.0 days with precipitation
14.0 days with precipitation
10.2 days with precipitation
9.8 days with precipitation
Penn Yan spreads its precipitation across the year
Neither half of the year dominates here: June through August take 30% of the annual total and December through February 15%, with neither reaching the 35% that would mark a distinct wet season. Penn Yan has no dry season to plan around, though it does carry a wide 46.5°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: September averages 3.9" and February 1.3". The three wettest months together take 34% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Penn Yan's precipitation splits across the calendar
About 141 days a year record measurable precipitation here, carrying 30.2" between them, or roughly 0.21 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 30
50% probability date
Growing Season
175 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,505
Higher = more heating needed
Cooling Degree Days
596
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside NY closest to Penn Yan on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (49°F here).
- Clarkson, NE 49°F · 0.0°F off
- Cuba, NM 49°F · 0.0°F off
- Dove Creek, CO 49°F · 0.0°F off
- Guernsey, WY 49°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (30.2" here), excluding temperature-peer places.
- Sibley, IA 30.2" · 0.0" off
- Marquette, MI 30.2" · 0.0" off
- York, NE 30.2" · 0.0" off
- Concordia, KS 30.3" · 0.1" off
Data-derived climate profile
How Penn Yan's climate pattern fits together
heating led · moderate · mid swing
Penn Yan's energy balance leans toward cold weather: 6,505 annual heating degree days against 596 for cooling. Its 46.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
Penn Yan's frost-free season lasts about 175 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Penn Yan's middle-range seasonal profile. The measured spread is 46.5°F. The annual average is 49°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Penn Yan's 30.2 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Penn Yan's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Penn Yan, not an official NOAA class or a year-ahead forecast.
Questions about Penn Yan's climate
How much rain does Penn Yan get? ▼
How cold does Penn Yan get in winter? ▼
How much energy does heating and cooling require in Penn Yan? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Penn Yan's primary station: PENN YAN AP (USW00054778). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3657177). Match rule for Penn Yan: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Penn Yan comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.