Allegany, New York climate: Normal weather by month, frost dates and records
Allegany's normal year runs from 15°F January nights to 79°F July afternoons, with 46.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.8°C, January lows of −9°C, July highs of 26°C, 1,185 mm of precipitation a year.
- NOAA stationAllegany State Park
- Station IDUSC00300093
- Location42.10°N 78.75°W
- Elevation1,500 ft (457 m)
- From the center13 miles
- Population1,608
On October 14, the normal high in Allegany is 60°F and the normal low 39°F, and the chance of measurable rain or snow is 43%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Allegany.
- Jan 32° 15°
- Feb 34° 15°
- Mar 42° 21°
- Apr 56° 32°
- May 68° 43°
- Jun 76° 52°
- Jul 79° 56°
- Aug 78° 55°
- Sep 71° 48°
- Oct 59° 38°
- Nov 47° 30°
- Dec 36° 22°
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 Allegany each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 15°F. The most precipitation falls in July (5.10 in), the least in February (2.49 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 32°F | 15°F | 23.3°F | 3.46 | 18 | <1 | 29 | 9 h 30 min |
| February | 34°F | 15°F | 24.4°F | 2.49 | 14 | <1 | 26 | 10 h 30 min |
| March | 42°F | 21°F | 31.9°F | 2.88 | 12 | <1 | 27 | 11 h 50 min |
| April | 56°F | 32°F | 44.0°F | 4.00 | 13 | <1 | 18 | 13 h 20 min |
| May | 68°F | 43°F | 55.4°F | 4.07 | 13 | <1 | 5 | 14 h 30 min |
| June | 76°F | 52°F | 63.9°F | 4.61 | 12 | <1 | <1 | 15 h 10 min |
| July | 79°F | 56°F | 67.6°F | 5.10 | 12 | 1 | <1 | 15 h |
| August | 78°F | 55°F | 66.2°F | 4.16 | 11 | <1 | <1 | 14 h |
| September | 71°F | 48°F | 59.6°F | 4.17 | 11 | <1 | 1 | 12 h 30 min |
| October | 59°F | 38°F | 48.5°F | 4.27 | 14 | <1 | 9 | 11 h 10 min |
| November | 47°F | 30°F | 38.4°F | 3.76 | 13 | <1 | 20 | 9 h 50 min |
| December | 36°F | 22°F | 29.0°F | 3.67 | 16 | <1 | 27 | 9 h 10 min |
| Year (annual) | 56°F | 36°F | 46.0°F | 46.64 | 159 | 1 | 161 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 0°C | −9°C | −4.8°C | 88 mm |
| February | 1°C | −9°C | −4.2°C | 63 mm |
| March | 6°C | −6°C | −0.1°C | 73 mm |
| April | 13°C | 0°C | 6.7°C | 102 mm |
| May | 20°C | 6°C | 13.0°C | 103 mm |
| June | 24°C | 11°C | 17.7°C | 117 mm |
| July | 26°C | 13°C | 19.8°C | 130 mm |
| August | 25°C | 13°C | 19.0°C | 106 mm |
| September | 22°C | 9°C | 15.3°C | 106 mm |
| October | 15°C | 3°C | 9.2°C | 108 mm |
| November | 8°C | −1°C | 3.6°C | 96 mm |
| December | 2°C | −6°C | −1.7°C | 93 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Salamanca (4 miles away), gets 96 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00300093; 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 Allegany?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (11).
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 USC00300093.
When is the last frost in Allegany?
In Allegany, the last spring frost (32°F) comes after May 12 in half of years and after May 28 in one year in ten; the first autumn frost comes before October 9 in half of years and before September 28 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 121 year in 10 after May 28; 9 in 10 after April 27
- First autumn frost, half of years before
- October 91 year in 10 before September 28; 9 in 10 before October 24
NOAA puts the median frost-free season at 150 days, and the season without a hard freeze (28°F) at 174 days.
A hard freeze (28°F) comes after April 30 in half of springs and before October 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Allegany in zone 5b in ZIP code 14778, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Allegany's NOAA station is in zone 5b: the coldest night of a typical year reaches −10°F (19 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 USC00300093; 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 Allegany?
In a normal year in Allegany, 1 day a year reaches 90°F, 161 nights fall to 32°F or colder and 159 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 161a normal year
- Days that stay below freezing
- 56high of 32°F or less
- Days with 0.01 inch of precipitation
- 159a normal year
The highest temperature in this station's record (since 1924) is 101°F, on July 9, 1936; the lowest is −35°F, on February 9, 1934.
The wettest calendar year on that record is 2017, with 57.38 in; the snowiest season is 2010–11, with 148.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00300093; records: ACIS (NOAA Regional Climate Centers), station USC00300093. Records use complete months only; a month missing more than three days is left out.
How sunny is Allegany?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Allegany, 3.6 kWh per square metre a day. August is the sunniest month (76%) and December the cloudiest (48%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 51% | 1.4 |
| February | 55% | 2.1 |
| March | 60% | 3.3 |
| April | 64% | 4.4 |
| May | 69% | 5.4 |
| June | 72% | 5.9 |
| July | 76% | 5.9 |
| August | 76% | 5.2 |
| September | 74% | 4.1 |
| October | 61% | 2.5 |
| November | 57% | 1.6 |
| December | 48% | 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 Allegany need?
A normal year in Allegany brings 7,204 heating degree days, 34% more than the median U.S. place (5,373), and 317 cooling degree days, 65% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,138 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,293 | 0 |
| February | 1,137 | 0 |
| March | 1,026 | 0 |
| April | 630 | 1 |
| May | 318 | 21 |
| June | 97 | 63 |
| July | 36 | 115 |
| August | 50 | 87 |
| September | 192 | 29 |
| October | 512 | 2 |
| November | 800 | 0 |
| December | 1,114 | 0 |
| Year (annual) | 7,204 | 317 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00300093. 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 Allegany been warmer than normal lately?
2025 averaged 45.8°F, 0.2°F below the 1991-2020 normal of 46.0°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 48.0°F | +2.0°F | 49.73 |
| 2023 | 47.6°F | +1.6°F | 36.01 |
| 2024 | 48.2°F | +2.2°F | 46.02 |
| 2025 | 45.8°F | −0.2°F | 46.54 |
Over 73 complete years from 1925 to 2025, the station's annual mean temperature rose at a fitted 2.3°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00300093; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Allegany's climate compare?
Allegany is warmer than 42 of the other 130 places with their own NOAA record in New York, and wetter than 85. Across the 7,247 U.S. stations with normals, its annual mean of 46.0°F is warmer than 23%.
In the Köppen classification computed from these normals, Allegany is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Allegany share this climate record?
University of Pittsburgh Bradford 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.
- University of Pittsburgh Bradford, PA894 people · 11 mi S
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 Allegany's climate
What is the coldest month in Allegany?
January, with a normal high of 32°F and a normal low of 15°F. The warmest is July (79°F by day, 56°F at night).
Does it snow in Allegany?
Yes. NOAA publishes no 1991-2020 snowfall normal for Allegany's NOAA station; the nearest record that keeps one, Salamanca (4 miles away), records 96 inches of snow in a normal year.
What is the rainiest month in Allegany?
July, with 5.10 in of precipitation in a normal year; the driest is February with 2.49 in.
What plant hardiness zone is Allegany in?
The USDA's 2023 map puts Allegany in zone 5b in ZIP code 14778, the nearest ZIP area. By the same method at Allegany's NOAA station, the coldest night of a typical year reaches −10°F (19 years, 1991-2020): zone 5b.
How late can frost come in Allegany?
In half of years the last 32°F night comes after May 12; in one year in ten it comes after May 28. Waiting until May 28 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
- Salamanca, NY4 miles from this station, 45.8°F a year
- Little Valley, NY11 miles from this station, 44.9°F a year
- Olean, NY16 miles from this station, 46.3°F a year
- Jamestown, NY21 miles from this station, 47.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made