Weather Forecast for Nantucket
Massachusetts, United States of America
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Current Weather - Nantucket: 23°C
Current Weather - Nantucket: 23°C
Massachusetts, United States of America
Partly cloudy
Feels like 25°C
Wind
20 km/h NNE
Humidity
50%
Pressure
1019 mb
UV Index
5
Visibility
16 km
Sunny
Thursday, July 23, 2026
High
24°C
Low
18°C
Rain Chance
17%
Hourly Forecast
24°C
19°C
19°C
18°C
18°C
Day Statistics
Maximum Wind
29 km/h
Humidity
71%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
05:27 AM
Sunset
08:06 PM
Moonrise
04:00 PM
Moonset
12:19 AM
Moon Phase
Waxing Gibbous
Moon Illumination
74%
Air Quality
PM2.5
7.3
μg/m³
PM10
10.2
μg/m³
NO₂
2.3
μg/m³
O₃
80.9
μg/m³
SO₂
0.5
μg/m³
CO
117.3
μg/m³
Sunny
Friday, July 24, 2026
High
21°C
Low
17°C
Rain Chance
4%
Hourly Forecast
18°C
17°C
20°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
20°C
20°C
20°C
20°C
20°C
20°C
21°C
21°C
20°C
20°C
20°C
20°C
20°C
20°C
Day Statistics
Maximum Wind
30 km/h
Humidity
60%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
4%
Snow Chance
0%
Sun & Moon
Sunrise
05:28 AM
Sunset
08:05 PM
Moonrise
05:03 PM
Moonset
12:56 AM
Moon Phase
Waxing Gibbous
Moon Illumination
82%
Air Quality
PM2.5
7.7
μg/m³
PM10
11.3
μg/m³
NO₂
1.5
μg/m³
O₃
80.5
μg/m³
SO₂
0.6
μg/m³
CO
101.4
μg/m³
Overcast
Saturday, July 25, 2026
High
20°C
Low
19°C
Rain Chance
23%
Hourly Forecast
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
19°C
19°C
19°C
Day Statistics
Maximum Wind
38 km/h
Humidity
67%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
23%
Snow Chance
0%
Sun & Moon
Sunrise
05:29 AM
Sunset
08:04 PM
Moonrise
05:59 PM
Moonset
01:40 AM
Moon Phase
Waxing Gibbous
Moon Illumination
90%
Air Quality
PM2.5
10.1
μg/m³
PM10
14.6
μg/m³
NO₂
0.6
μg/m³
O₃
84.5
μg/m³
SO₂
0.4
μg/m³
CO
98.8
μg/m³
Cloudy
Sunday, July 26, 2026
High
20°C
Low
19°C
Rain Chance
68%
Hourly Forecast
20°C
20°C
19°C
20°C
20°C
20°C
20°C
20°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
19°C
Day Statistics
Maximum Wind
32 km/h
Humidity
92%
Precipitation
1 mm
UV Index
4
Visibility
10 km
Rain Chance
68%
Snow Chance
0%
Sun & Moon
Sunrise
05:30 AM
Sunset
08:03 PM
Moonrise
06:46 PM
Moonset
02:32 AM
Moon Phase
Waxing Gibbous
Moon Illumination
95%
Air Quality
PM2.5
7.6
μg/m³
PM10
11.3
μg/m³
NO₂
0.3
μg/m³
O₃
80.8
μg/m³
SO₂
0.3
μg/m³
CO
102.8
μg/m³
Partly Cloudy
Monday, July 27, 2026
High
20°C
Low
19°C
Rain Chance
15%
Hourly Forecast
19°C
19°C
19°C
19°C
19°C
19°C
19°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
Day Statistics
Maximum Wind
18 km/h
Humidity
87%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
15%
Snow Chance
0%
Sun & Moon
Sunrise
05:31 AM
Sunset
08:02 PM
Moonrise
07:26 PM
Moonset
03:30 AM
Moon Phase
Full Moon
Moon Illumination
99%
Air Quality
PM2.5
4.7
μg/m³
PM10
8
μg/m³
NO₂
0.5
μg/m³
O₃
48.6
μg/m³
SO₂
0.3
μg/m³
CO
121.4
μg/m³
Sunny
Tuesday, July 28, 2026
High
21°C
Low
20°C
Rain Chance
68%
Hourly Forecast
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
Day Statistics
Maximum Wind
23 km/h
Humidity
88%
Precipitation
3 mm
UV Index
6
Visibility
10 km
Rain Chance
68%
Snow Chance
0%
Sun & Moon
Sunrise
05:31 AM
Sunset
08:01 PM
Moonrise
07:58 PM
Moonset
04:32 AM
Moon Phase
Full Moon
Moon Illumination
100%
Partly Cloudy
Wednesday, July 29, 2026
High
22°C
Low
21°C
Rain Chance
20%
Hourly Forecast
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
22°C
21°C
21°C
21°C
21°C
22°C
22°C
22°C
21°C
21°C
Day Statistics
Maximum Wind
28 km/h
Humidity
90%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
20%
Snow Chance
0%
Sun & Moon
Sunrise
05:32 AM
Sunset
08:00 PM
Moonrise
08:25 PM
Moonset
05:35 AM
Moon Phase
Full Moon
Moon Illumination
99%
Solar Radiation Data
Shortwave Radiation
766.51
Diffuse Radiation
82.94
DNI
0
GTI
0
Weather Alerts
Small Craft Advisory issued July 23 at 2:39AM EDT until July 23 at 11:00PM EDT by NWS Boston/Norton MA
* WHAT...Northeast winds 10 to 15 kt and seas 4 to 7 feet. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...Until 11 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.
Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
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