Centerport, New York climate: Normal weather by month, frost dates and records
Centerport's normal year runs from 25°F January nights to 83°F July afternoons, with 48.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.7°C, January lows of −4°C, July highs of 28°C, 1,232 mm of precipitation a year.
- NOAA stationCenterport
- Station IDUSC00301309
- Location40.88°N 73.37°W
- Elevation30 ft (9 m)
- From the center1 miles
- Population (census place)6,219
On October 23, the normal high in Centerport is 60°F and the normal low 46°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Centerport.
- Jan 38° 25°
- Feb 40° 25°
- Mar 47° 31°
- Apr 60° 41°
- May 70° 51°
- Jun 78° 60°
- Jul 83° 66°
- Aug 81° 65°
- Sep 74° 59°
- Oct 63° 49°
- Nov 52° 39°
- Dec 43° 31°
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 Centerport each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 25°F. The most precipitation falls in September (4.67 in), the least in February (3.09 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 25°F | 31.2°F | 3.72 | – | <1 | 24 | 9 h 30 min |
| February | 40°F | 25°F | 32.7°F | 3.09 | – | <1 | 22 | 10 h 40 min |
| March | 47°F | 31°F | 39.3°F | 4.24 | – | <1 | 17 | 11 h 50 min |
| April | 60°F | 41°F | 50.4°F | 4.09 | – | <1 | 2 | 13 h 20 min |
| May | 70°F | 51°F | 60.1°F | 3.88 | – | 1 | <1 | 14 h 30 min |
| June | 78°F | 60°F | 69.3°F | 4.29 | – | 2 | <1 | 15 h 10 min |
| July | 83°F | 66°F | 74.5°F | 3.83 | – | 6 | <1 | 14 h 50 min |
| August | 81°F | 65°F | 73.2°F | 4.32 | – | 2 | <1 | 13 h 50 min |
| September | 74°F | 59°F | 66.7°F | 4.67 | – | 1 | <1 | 12 h 30 min |
| October | 63°F | 49°F | 55.7°F | 4.26 | – | <1 | <1 | 11 h 10 min |
| November | 52°F | 39°F | 45.5°F | 3.48 | – | <1 | 5 | 10 h |
| December | 43°F | 31°F | 36.8°F | 4.64 | – | <1 | 18 | 9 h 20 min |
| Year (annual) | 61°F | 45°F | 53.0°F | 48.51 | – | 11 | 88 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −4°C | −0.4°C | 94 mm |
| February | 4°C | −4°C | 0.4°C | 78 mm |
| March | 8°C | 0°C | 4.1°C | 108 mm |
| April | 15°C | 5°C | 10.2°C | 104 mm |
| May | 21°C | 10°C | 15.6°C | 99 mm |
| June | 26°C | 16°C | 20.7°C | 109 mm |
| July | 28°C | 19°C | 23.6°C | 97 mm |
| August | 27°C | 18°C | 22.9°C | 110 mm |
| September | 24°C | 15°C | 19.3°C | 119 mm |
| October | 17°C | 9°C | 13.2°C | 108 mm |
| November | 11°C | 4°C | 7.5°C | 88 mm |
| December | 6°C | −1°C | 2.7°C | 118 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Islip (15 miles away), gets 32 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00301309; 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 Centerport?
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 USC00301309.
When is the last frost in Centerport?
In Centerport, the last spring frost (32°F) comes after April 9 in half of years and after April 23 in one year in ten; the first autumn frost comes before November 10 in half of years and before October 30 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
- April 91 year in 10 after April 23; 9 in 10 after March 30
- First autumn frost, half of years before
- November 101 year in 10 before October 30; 9 in 10 before November 26
NOAA puts the median frost-free season at 215 days, and the season without a hard freeze (28°F) at 237 days.
A hard freeze (28°F) comes after March 30 in half of springs and before November 21 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Centerport in zone 7b in ZIP code 11721. By the map's own method, the average of each year's coldest night over 1991-2020, Centerport's NOAA station is in zone 7b: the coldest night of a typical year reaches 6°F (16 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 USC00301309; 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 Centerport?
In a normal year in Centerport, 11 days a year reach 90°F and 88 nights fall to 32°F or colder.
- Days at 90°F or more
- 11a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 88a normal year
- Days that stay below freezing
- 22high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00301309.
How sunny is Centerport?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Centerport, 4.0 kWh per square metre a day. July is the sunniest month (82%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.9 |
| February | 70% | 2.8 |
| March | 71% | 3.8 |
| April | 73% | 5.0 |
| May | 73% | 5.6 |
| June | 78% | 6.1 |
| July | 82% | 6.2 |
| August | 81% | 5.5 |
| September | 79% | 4.5 |
| October | 72% | 3.0 |
| November | 72% | 2.1 |
| December | 66% | 1.6 |
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 Centerport need?
A normal year in Centerport brings 5,218 heating degree days, 3% fewer than the median U.S. place (5,373), and 855 cooling degree days, 6% fewer than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,244 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,048 | 0 |
| February | 904 | 0 |
| March | 797 | 0 |
| April | 443 | 4 |
| May | 184 | 31 |
| June | 29 | 158 |
| July | 1 | 295 |
| August | 3 | 257 |
| September | 52 | 101 |
| October | 298 | 10 |
| November | 587 | 0 |
| December | 874 | 0 |
| Year (annual) | 5,218 | 855 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00301309. 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 Centerport been warmer than normal lately?
2025 averaged 53.2°F, 0.2°F above the 1991-2020 normal of 53.0°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 54.3°F | +1.3°F | 51.06 |
| 2022 | 53.6°F | +0.6°F | 49.09 |
| 2023 | 55.0°F | +2.0°F | 52.44 |
| 2024 | 54.8°F | +1.8°F | 54.60 |
| 2025 | 53.2°F | +0.2°F | 36.98 |
Source: observed years: ACIS, station USC00301309. A year counts only with all twelve months complete.
How does Centerport's climate compare?
Centerport is warmer than 118 of the other 130 places with their own NOAA record in New York, and wetter than 94. Across the 7,247 U.S. stations with normals, its annual mean of 53.0°F is warmer than 54%.
In the Köppen classification computed from these normals, Centerport is Dfa: continental, no dry season, hot 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 Centerport share this climate record?
28 places have no NOAA station with 1991-2020 normals of their 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.
- Norwalk, CTalso near: Stamford (7 mi, 52.6°F a year); Westchester County Airport (15 mi, 52.0°F a year)93,661 people · 15 mi N
- Commack, NY36,353 people · 5 mi SE
- Huntington Station, NY33,283 people · 3 mi SW
- Dix Hills, NY25,042 people · 6 mi S
- Huntington, NY20,117 people · 2 mi W
- East Northport, NY19,672 people · 3 mi E
- Kings Park, NY16,249 people · 7 mi E
- Greenlawn, NY14,986 people · 1 mi S
- Elwood, NY11,140 people · 3 mi SE
- Fort Salonga, NY10,203 people · 4 mi NE
- South Huntington, NY10,150 people · 4 mi S
- Northport, NY7,317 people · 2 mi NE
- Oyster Bay, NY6,900 people · 8 mi W
- West Hills, NY5,138 people · 5 mi SW
- Lloyd Harbor, NY3,565 people · 5 mi NW
- Compo, CT3,561 people · 17 mi N
- Cold Spring Harbor, NY3,123 people · 5 mi W
- Saugatuck, CT3,091 people · 16 mi N
- Westport Village, CT2,863 people · 18 mi N
- East Norwich, NY2,703 people · 8 mi W
- Tokeneke, CT2,466 people · 13 mi N
- Halesite, NY2,348 people · 2 mi W
- Oyster Bay Cove, NY2,257 people · 7 mi W
- Laurel Hollow, NY1,945 people · 6 mi W
- Huntington Bay, NY1,445 people · 2 mi NW
- Eatons Neck, NY1,158 people · 4 mi NW
- Asharoken, NY608 people · 4 mi N
- Cove Neck, NY293 people · 6 mi W
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 Centerport's climate
What is the coldest month in Centerport?
January, with a normal high of 38°F and a normal low of 25°F. The warmest is July (83°F by day, 66°F at night).
Does it snow in Centerport?
Yes. NOAA publishes no 1991-2020 snowfall normal for Centerport's NOAA station; the nearest record that keeps one, Islip (15 miles away), records 32 inches of snow in a normal year.
What is the rainiest month in Centerport?
September, with 4.67 in of precipitation in a normal year; the driest is February with 3.09 in.
What plant hardiness zone is Centerport in?
The USDA's 2023 map puts Centerport in zone 7b in ZIP code 11721. By the same method at Centerport's NOAA station, the coldest night of a typical year reaches 6°F (16 years, 1991-2020): zone 7b.
How late can frost come in Centerport?
In half of years the last 32°F night comes after April 9; in one year in ten it comes after April 23. Waiting until April 23 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
- Farmingdale, NY11 miles from this station, 53.5°F a year
- Setauket, NY15 miles from this station, 53.4°F a year
- Islip, NY16 miles from this station, 53.1°F a year
- Mineola, NY17 miles from this station, 55.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made