Nantucket County weather, town by town
3 places in Nantucket County, Massachusetts, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1948 to 2025. Station extremes, not official state records.
Nantucket County Weather Facts
Nantucket County has 3 places on myweatherrock (2 census-designated places, 1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 100°F at Nantucket Mem Ap on August 2, 1975. The coldest night is -3°F at Nantucket Mem Ap on December 31, 1962. The wettest day brought 6.48 inches of rain at Nantucket Mem Ap on May 25, 1967. The biggest single-day snow measured 15.98 inches at Edgartown on January 23, 2005. Those are station measurements from NOAA's daily records, 1948 to 2025, not official state records. By area the largest place is Nantucket, about 46 square miles.
About Nantucket County weather
The map on the Now tab shows every Nantucket County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 3 Nantucket County towns with station normals, the warmest month is July, when the day usually reaches 76°F, and the coldest is January, when the night usually falls to 27°F. August is the wettest, with rain on about 13 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Nantucket County weather records
Measured at the NOAA stations serving these towns, daily records 1948 to 2025. Station extremes, not official state records.
Common questions about Nantucket County weather
- What is the hottest temperature recorded at a Nantucket County station?
- 100°F at Nantucket Mem Ap on August 2, 1975, in the NOAA daily station records myweatherrock holds (1948 to 2025).
- What is the coldest temperature recorded at a Nantucket County station?
- -3°F at Nantucket Mem Ap on December 31, 1962.
- What is the most rain a Nantucket County station has measured in one day?
- 6.48 inches at Nantucket Mem Ap on May 25, 1967.
- What is the biggest one-day snowfall at a Nantucket County station?
- 15.98 inches at Edgartown on January 23, 2005.
- How many Nantucket County towns have a weather page here?
- 3: 2 census-designated places, 1 towns. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Nantucket County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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