Nantucket Weather Forecast
Nantucket weather: 71°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Nantucket
Derived from the current forecast window - not an official warning.
Peak gusts of 39 mph and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,5 in, 1,5 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day forecast for Nantucket
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | 🌧️ Rain | 73° / 68° | 76% · 0,5 in | 18 mph | 3 |
| Sat, Aug 22 | 🌦️ Light drizzle | 72° / 68° | 56% · 0,0 in | 16 mph | 3 |
| Sun, Aug 23 | 🌦️ Light showers | 75° / 71° | 68% · 0,2 in | 16 mph | 7 |
| Mon, Aug 24 | 🌦️ Light drizzle | 75° / 74° | 30% · 0,0 in | 22 mph | 7 |
| Tue, Aug 25 | 🌦️ Light drizzle | 74° / 71° | 6% · 0,0 in | 21 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 75° / 74° | 12% | 18 mph | 7 |
| Thu, Aug 27 | 🌦️ Light showers | 75° / 73° | 30% · 0,2 in | 19 mph | 3 |
| Fri, Aug 28 | 🌧️ Heavy drizzle | 76° / 73° | 38% · 0,4 in | 26 mph | 5 |
| Sat, Aug 29 | ☁️ Overcast | 75° / 73° | 14% | 19 mph | 7 |
| Sun, Aug 30 | 🌦️ Light drizzle | 73° / 69° | 15% · 0,0 in | 13 mph | 4 |
| Mon, Aug 31 | 🌦️ Light drizzle | 72° / 68° | 21% · 0,0 in | 13 mph | 7 |
| Tue, Sep 1 | 🌦️ Light drizzle | 72° / 69° | 24% · 0,1 in | 14 mph | 6 |
| Wed, Sep 2 | ☁️ Overcast | 72° / 69° | 29% | 10 mph | 7 |
| Thu, Sep 3 | 🌦️ Drizzle | 75° / 72° | 26% · 0,1 in | 13 mph | 7 |
| Fri, Sep 4 | 🌦️ Light drizzle | 74° / 72° | 29% · 0,0 in | 11 mph | 7 |
| Sat, Sep 5 | ☀️ Clear sky | -- / -- | 23% | -- | — |
What this means for Nantucket
Today is about average for August. The forecast high of 73°F is in line with the 71°F typical for this month.
A 76% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,5 in is forecast, which is enough to soak trails and slow traffic.
Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 68°F.
See the Nantucket forecast by time range
Nantucket weather - more answers
Explore Nantucket
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Nantucket?
Nantucket is an island in Massachusetts. Its coordinates are 41.2835, -70.0995. It lies in North America.
What is the weather like in Nantucket right now?
It is currently 71°F (22°C) with overcast. Humidity is 91% and wind is 12 mph.
When is the best time to visit Nantucket?
June and August offer the most comfortable conditions in Nantucket, which has a temperate climate. January, February and March are usually the hardest months for outdoor plans.
What time zone is Nantucket in?
Nantucket observes America/New_York (UTC-04:00). The local time is 2:52 AM.
What is the nearest airport to Nantucket?
The closest airports are Boston Logan International Airport (BOS), 88 mi away, John F. Kennedy International Airport (JFK), 197 mi away and LaGuardia Airport (LGA), 200 mi away.
What are the top things to do in Nantucket?
Popular options include Martha's Vineyard, Cape Cod National Seashore, Central Park, Times Square, Empire State Building and Hudson River.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 2:52 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
