Mattituck, New York climate: Normal weather by month, frost dates and records
Mattituck's normal year runs from 23°F January nights to 82°F July afternoons, with 45.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.9°C, January lows of −5°C, July highs of 28°C, 1,144 mm of precipitation a year.
- NOAA stationMattituck
- Station IDUSC00305142
- Location40.99°N 72.51°W
- Elevation20 ft (6 m)
- From the center2 miles
- Population (census place)4,204
On October 23, the normal high in Mattituck is 61°F and the normal low 44°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mattituck.
- Jan 38° 23°
- Feb 40° 24°
- Mar 47° 30°
- Apr 57° 39°
- May 67° 48°
- Jun 75° 59°
- Jul 82° 65°
- Aug 81° 64°
- Sep 74° 57°
- Oct 64° 46°
- Nov 53° 36°
- Dec 43° 28°
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 Mattituck each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 23°F. The most precipitation falls in December (4.26 in), the least in July (3.08 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 23°F | 30.4°F | 3.61 | – | <1 | 26 | 9 h 30 min |
| February | 40°F | 24°F | 32.0°F | 3.12 | – | <1 | 23 | 10 h 40 min |
| March | 47°F | 30°F | 38.3°F | 4.25 | – | <1 | 19 | 11 h 50 min |
| April | 57°F | 39°F | 47.8°F | 4.06 | – | <1 | 5 | 13 h 20 min |
| May | 67°F | 48°F | 57.7°F | 3.45 | – | <1 | <1 | 14 h 30 min |
| June | 75°F | 59°F | 67.0°F | 3.75 | – | 1 | <1 | 15 h 10 min |
| July | 82°F | 65°F | 73.3°F | 3.08 | – | 3 | <1 | 14 h 50 min |
| August | 81°F | 64°F | 72.9°F | 4.12 | – | 2 | <1 | 13 h 50 min |
| September | 74°F | 57°F | 65.6°F | 3.79 | – | <1 | <1 | 12 h 30 min |
| October | 64°F | 46°F | 54.8°F | 4.04 | – | <1 | 1 | 11 h 10 min |
| November | 53°F | 36°F | 44.6°F | 3.50 | – | <1 | 10 | 10 h |
| December | 43°F | 28°F | 35.8°F | 4.26 | – | <1 | 20 | 9 h 20 min |
| Year (annual) | 60°F | 43°F | 51.7°F | 45.03 | – | 7 | 105 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −5°C | −0.9°C | 92 mm |
| February | 5°C | −5°C | 0.0°C | 79 mm |
| March | 8°C | −1°C | 3.5°C | 108 mm |
| April | 14°C | 4°C | 8.8°C | 103 mm |
| May | 19°C | 9°C | 14.3°C | 88 mm |
| June | 24°C | 15°C | 19.4°C | 95 mm |
| July | 28°C | 18°C | 22.9°C | 78 mm |
| August | 27°C | 18°C | 22.7°C | 105 mm |
| September | 24°C | 14°C | 18.7°C | 96 mm |
| October | 18°C | 8°C | 12.7°C | 103 mm |
| November | 12°C | 2°C | 7.0°C | 89 mm |
| December | 6°C | −2°C | 2.1°C | 108 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Bridgehampton (11 miles away), gets 27 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00305142; 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 Mattituck?
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 USC00305142.
When is the last frost in Mattituck?
In Mattituck, the last spring frost (32°F) comes after April 19 in half of years and after May 4 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 17 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 191 year in 10 after May 4; 9 in 10 after April 5
- First autumn frost, half of years before
- November 11 year in 10 before October 17; 9 in 10 before November 14
NOAA puts the median frost-free season at 196 days, and the season without a hard freeze (28°F) at 221 days.
A hard freeze (28°F) comes after April 4 in half of springs and before November 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mattituck in zone 7a in ZIP code 11952.
Frost dates for every NOAA station in New York · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00305142; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Mattituck?
In a normal year in Mattituck, 7 days a year reach 90°F and 105 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
- 105a normal year
- Days that stay below freezing
- 15high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00305142.
How sunny is Mattituck?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Mattituck, 4.0 kWh per square metre a day. August is the sunniest month (82%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.8 |
| February | 69% | 2.7 |
| March | 71% | 3.8 |
| April | 73% | 5.0 |
| May | 73% | 5.6 |
| June | 77% | 6.1 |
| July | 82% | 6.1 |
| August | 82% | 5.5 |
| September | 79% | 4.4 |
| October | 72% | 3.0 |
| November | 70% | 2.1 |
| December | 64% | 1.5 |
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 Mattituck need?
A normal year in Mattituck brings 5,530 heating degree days, 3% more than the median U.S. place (5,373), and 699 cooling degree days, 23% 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 2,921 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,072 | 0 |
| February | 925 | 0 |
| March | 829 | 0 |
| April | 518 | 0 |
| May | 237 | 11 |
| June | 40 | 100 |
| July | 2 | 259 |
| August | 2 | 246 |
| September | 64 | 80 |
| October | 320 | 4 |
| November | 614 | 0 |
| December | 907 | 0 |
| Year (annual) | 5,530 | 699 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00305142. 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 Mattituck been warmer than normal lately?
2021 averaged 52.8°F, 1.1°F above the 1991-2020 normal of 51.7°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.8°F | +1.1°F | 44.81 |
Source: observed years: ACIS, station USC00305142. A year counts only with all twelve months complete.
How does Mattituck's climate compare?
Mattituck is warmer than 115 of the other 130 places with their own NOAA record in New York, and wetter than 74. Across the 7,247 U.S. stations with normals, its annual mean of 51.7°F is warmer than 48%.
In the Köppen classification computed from these normals, Mattituck 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 Mattituck share this climate record?
8 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.
- Southold, NY6,600 people · 7 mi NE
- Cutchogue, NY2,903 people · 3 mi NE
- Shinnecock Hills, NY1,944 people · 8 mi SE
- Jamesport, NY1,538 people · 4 mi SW
- Laurel, NY1,340 people · 3 mi SW
- Tuckahoe, NY1,078 people · 7 mi SE
- Peconic, NY771 people · 4 mi NE
- New Suffolk, NY293 people · 2 mi E
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 Mattituck's climate
What is the coldest month in Mattituck?
January, with a normal high of 38°F and a normal low of 23°F. The warmest is July (82°F by day, 65°F at night).
Does it snow in Mattituck?
Yes. NOAA publishes no 1991-2020 snowfall normal for Mattituck's NOAA station; the nearest record that keeps one, Bridgehampton (11 miles away), records 27 inches of snow in a normal year.
What is the rainiest month in Mattituck?
December, with 4.26 in of precipitation in a normal year; the driest is July with 3.08 in.
What plant hardiness zone is Mattituck in?
The USDA's 2023 map puts Mattituck in zone 7a in ZIP code 11952.
How late can frost come in Mattituck?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 4. Waiting until May 4 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
- Riverhead, NY11 miles from this station, 54.0°F a year
- Bridgehampton, NY11 miles from this station, 50.8°F a year
- Westhamptn Gabreski Airport, NY12 miles from this station, 50.2°F a year
- Baiting Hollow, NY12 miles from this station, 51.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made