Nantucket Mem, MA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Nantucket Mem's primary NOAA station, NANTUCKET MEM AP.
The climate verdict for Nantucket Mem
Nantucket Mem, Massachusetts has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 51°F. Its climate comfort score of 68/100 (good) lands mid-pack nationally, exceeding 56% of station-mapped location scores.
- 51°F
- average temperature, NOAA 1991-2020 normal
- 68/100
- comfort score, above 56% of station-mapped location scores
- 40.9"
- yearly precipitation total
- 209 days
- growing season, frost-free days
Nantucket Mem: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00014756 · Nantucket Mem, MA 51°F mean · 40.9" precip
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-MID · SWING-MID · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 51°F
- RANK-MID #2,950
- PHOTO-FINISH ≈ Toketee Falls
- PRCP-MID 40.9"
- SWING-MID 36°F
- COMF-MID 68/100
- LOAD-HEAT 5,536 HDD
- STN-1 USW00014756
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Toketee Falls, OR (+ 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 MA station list.
- Nantucket Mem (this station) 51°F
- Cold Hat Creek, CA 51°F
- Hot Bland, VA 51°F
- Near Toketee Falls, OR 51°F
- Near Mckenzie Rvr Ra…, OR 51°F
Climate Living Index · Nantucket Mem
Nantucket Mem: 66/100 · grade C
Nantucket Mem publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Nantucket Mem, not an official NOAA rating. Rankings still use Comfort Score 68/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 40.9 in · 5.9 from 35 in | 79/100 · B |
| Normal heat + freeze calendar | 94 calendar days | 78/100 · B |
| Frost-free season | 209 days/year | 71/100 · B |
| Annual temperature balance | 50.7°F · 16.8° from 67.5°F | 43/100 · D |
Nantucket Mem · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Nantucket Mem is a temperate Köppen climate: Cfb
Coldest-month mean 33.1°F and warmest-month mean 69.0°F place this station in temperate, no dry season, warm summer climates (Cfb). Class Cfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, warm summer.
- Köppen code
- Cfb
- Group
- Temperate
- Warmest month
- 69.0°F
- Coldest month
- 33.1°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 Nantucket Mem sits across the climate record
Three NOAA fields for Nantucket Mem's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 43rd percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- 60th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Narrower than 80%
- Warmest-to-coldest month gap for Nantucket Mem is compact versus 6,861 complete station-years.
How Nantucket Mem compares across U.S. station-mapped locations
Nantucket Mem's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 44% score exceeds 56% 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
Nantucket Mem's measured station temperature trend
MethodologyAcross 54 complete annual observations from 1948 to 2025, NANTUCKET MEM AP warmed at a fitted rate of 0.19°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Nantucket Mem primary station fitted change +0.19 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 40°F (4°C) | 27°F (-3°C) | 33°F (1°C) | 3.2" | 21.9 | 0.0 |
| February | 40°F (5°C) | 27°F (-3°C) | 34°F (1°C) | 2.8" | 21.2 | 0.0 |
| March | 44°F (7°C) | 32°F (0°C) | 38°F (3°C) | 3.8" | 16.5 | 0.0 |
| April | 52°F (11°C) | 39°F (4°C) | 46°F (8°C) | 3.6" | 3.6 | 0.0 |
| May | 61°F (16°C) | 47°F (8°C) | 54°F (12°C) | 3.0" | 0.1 | 0.0 |
| June | 69°F (20°C) | 56°F (13°C) | 62°F (17°C) | 3.0" | 0.0 | 0.0 |
| July | 75°F (24°C) | 63°F (17°C) | 69°F (21°C) | 2.7" | 0.0 | 0.1 |
| August | 76°F (24°C) | 62°F (17°C) | 69°F (21°C) | 3.0" | 0.0 | 0.0 |
| September | 70°F (21°C) | 57°F (14°C) | 64°F (18°C) | 3.6" | 0.0 | 0.0 |
| October | 62°F (17°C) | 49°F (9°C) | 55°F (13°C) | 4.4" | 0.4 | 0.0 |
| November | 53°F (12°C) | 40°F (4°C) | 46°F (8°C) | 3.8" | 5.5 | 0.0 |
| December | 45°F (7°C) | 32°F (0°C) | 39°F (4°C) | 3.9" | 16.2 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 77°F around July 27, short of 90°F on every date, while 94 dates carry a normal low at or below freezing, the coldest 26°F near January 24.
The freezing stretch
The normal low stays at or below 32°F into March 19, then returns to freezing around December 17, covering 94 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 August 14, when 43% of years recorded at least a hundredth of an inch. The driest is March 5 at 34%. Summed across the calendar, that is about 141 wet dates a year.
The widest day
April 26 carries the biggest normal gap between afternoon and dawn, 14°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Nantucket Mem.
Where Nantucket Mem Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 14°F.
Nantucket Mem 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
11.6 days with precipitation
10.2 days with precipitation
10.5 days with precipitation
11.9 days with precipitation
11.7 days with precipitation
11.6 days with precipitation
11.9 days with precipitation
13.1 days with precipitation
12.5 days with precipitation
13.1 days with precipitation
10.9 days with precipitation
12.4 days with precipitation
Nantucket Mem spreads its precipitation across the year
Neither half of the year dominates here: June through August take 21% of the annual total and December through February 24%, with neither reaching the 35% that would mark a distinct wet season. Nantucket Mem has no dry season to plan around, though it does carry a 35.9°F seasonal spread.
The gap between the wettest and driest month still matters: October averages 4.4" and July 2.7". The three wettest months together take 30% 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 Nantucket Mem's precipitation splits across the calendar
About 141 days a year record measurable precipitation here, carrying 40.9" between them, or roughly 0.29 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
November 8
50% probability date
Last Spring Freeze
April 13
50% probability date
Growing Season
209 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,536
Higher = more heating needed
Cooling Degree Days
343
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside MA closest to Nantucket Mem 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 (51°F here).
- Decatur, IN 51°F · 0.0°F off
- Ellicott, CO 51°F · 0.0°F off
- Fort Collins, CO 51°F · 0.0°F off
- Fredonia, NY 51°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (40.9" here), excluding temperature-peer places.
- Donora, PA 40.9" · 0.0" off
- Ferris, TX 40.9" · 0.0" off
- Higginsville, MO 40.9" · 0.0" off
- Gallatin, MO 40.8" · 0.0" off
Data-derived climate profile
How Nantucket Mem's climate pattern fits together
heating led · moderate · mid swing
Nantucket Mem's energy balance leans toward cold weather: 5,536 annual heating degree days against 343 for cooling. Its 35.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Nantucket Mem's frost-free season lasts about 209 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 Nantucket Mem's middle-range seasonal profile. The measured spread is 35.9°F. The annual average is 51°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Nantucket Mem's 40.9 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 Nantucket Mem'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 Nantucket Mem, not an official NOAA class or a year-ahead forecast.
Questions about Nantucket Mem's climate
How much rain does Nantucket Mem get? ▼
How much energy does heating and cooling require in Nantucket Mem? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Nantucket Mem's primary station: NANTUCKET MEM AP (USW00014756). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Nantucket Mem; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Nantucket Mem 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.