Weather Forecast for Martha's Vineyard
Massachusetts, United States of America
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Current Weather - Martha's Vineyard: 20°C
Current Weather - Martha's Vineyard: 20°C
Massachusetts, United States of America
Overcast
Feels like 17°C
Wind
26 km/h NW
Humidity
72%
Pressure
1014 mb
UV Index
1
Visibility
10 km
Sunny
Monday, September 14, 2026
High
22°C
Low
18°C
Rain Chance
36%
Hourly Forecast
22°C
21°C
20°C
19°C
19°C
19°C
18°C
18°C
Day Statistics
Maximum Wind
28 km/h
Humidity
70%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:21 AM
Sunset
06:53 PM
Moonrise
10:22 AM
Moonset
08:20 PM
Moon Phase
Waxing Crescent
Moon Illumination
14%
Air Quality
PM2.5
4.7
μg/m³
PM10
5.7
μg/m³
NO₂
3.3
μg/m³
O₃
78
μg/m³
SO₂
0.5
μg/m³
CO
146.8
μg/m³
Sunny
Tuesday, September 15, 2026
High
19°C
Low
16°C
Rain Chance
5%
Hourly Forecast
17°C
17°C
17°C
16°C
16°C
16°C
16°C
16°C
16°C
16°C
17°C
17°C
18°C
18°C
19°C
19°C
18°C
18°C
17°C
17°C
17°C
16°C
16°C
16°C
Day Statistics
Maximum Wind
26 km/h
Humidity
63%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
5%
Snow Chance
0%
Sun & Moon
Sunrise
06:22 AM
Sunset
06:52 PM
Moonrise
11:35 AM
Moonset
08:53 PM
Moon Phase
Waxing Crescent
Moon Illumination
23%
Air Quality
PM2.5
3.6
μg/m³
PM10
5.4
μg/m³
NO₂
1.7
μg/m³
O₃
69
μg/m³
SO₂
0.4
μg/m³
CO
148.2
μg/m³
Overcast
Wednesday, September 16, 2026
High
21°C
Low
16°C
Rain Chance
12%
Hourly Forecast
16°C
16°C
16°C
16°C
16°C
16°C
16°C
16°C
16°C
17°C
18°C
19°C
20°C
20°C
21°C
21°C
20°C
20°C
20°C
19°C
19°C
19°C
19°C
19°C
Day Statistics
Maximum Wind
20 km/h
Humidity
70%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
12%
Snow Chance
0%
Sun & Moon
Sunrise
06:23 AM
Sunset
06:50 PM
Moonrise
12:44 PM
Moonset
09:33 PM
Moon Phase
First Quarter
Moon Illumination
32%
Air Quality
PM2.5
7.8
μg/m³
PM10
12.8
μg/m³
NO₂
0.5
μg/m³
O₃
71.7
μg/m³
SO₂
0.5
μg/m³
CO
146.3
μg/m³
Overcast
Thursday, September 17, 2026
High
23°C
Low
19°C
Rain Chance
17%
Hourly Forecast
19°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
20°C
21°C
22°C
22°C
22°C
23°C
23°C
23°C
22°C
22°C
21°C
21°C
21°C
21°C
21°C
Day Statistics
Maximum Wind
20 km/h
Humidity
78%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
06:24 AM
Sunset
06:48 PM
Moonrise
01:47 PM
Moonset
10:21 PM
Moon Phase
First Quarter
Moon Illumination
42%
Air Quality
PM2.5
11.9
μg/m³
PM10
18
μg/m³
NO₂
0.5
μg/m³
O₃
93.4
μg/m³
SO₂
1.1
μg/m³
CO
141.6
μg/m³
Sunny
Friday, September 18, 2026
High
21°C
Low
17°C
Rain Chance
36%
Hourly Forecast
21°C
21°C
21°C
21°C
21°C
21°C
21°C
21°C
18°C
21°C
19°C
19°C
20°C
21°C
19°C
19°C
18°C
18°C
18°C
17°C
17°C
17°C
17°C
17°C
Day Statistics
Maximum Wind
30 km/h
Humidity
76%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:25 AM
Sunset
06:47 PM
Moonrise
02:41 PM
Moonset
11:16 PM
Moon Phase
First Quarter
Moon Illumination
53%
Air Quality
PM2.5
11.2
μg/m³
PM10
18.5
μg/m³
NO₂
0.4
μg/m³
O₃
74.3
μg/m³
SO₂
0.5
μg/m³
CO
171.2
μg/m³
Sunny
Saturday, September 19, 2026
High
18°C
Low
16°C
Rain Chance
6%
Hourly Forecast
17°C
17°C
17°C
17°C
17°C
17°C
17°C
17°C
17°C
17°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
17°C
17°C
17°C
17°C
17°C
17°C
16°C
Day Statistics
Maximum Wind
31 km/h
Humidity
65%
Precipitation
0 mm
UV Index
5
Visibility
10 km
Rain Chance
6%
Snow Chance
0%
Sun & Moon
Sunrise
06:26 AM
Sunset
06:45 PM
Moonrise
03:27 PM
Moonset
Does not set today
Moon Phase
First Quarter
Moon Illumination
63%
Overcast
Sunday, September 20, 2026
High
18°C
Low
16°C
Rain Chance
57%
Hourly Forecast
16°C
16°C
16°C
16°C
16°C
16°C
16°C
17°C
17°C
17°C
17°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
18°C
17°C
17°C
Day Statistics
Maximum Wind
17 km/h
Humidity
71%
Precipitation
1 mm
UV Index
5
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:27 AM
Sunset
06:43 PM
Moonrise
04:04 PM
Moonset
12:15 AM
Moon Phase
Waxing Gibbous
Moon Illumination
73%
Solar Radiation Data
Shortwave Radiation
206.18
Diffuse Radiation
83.78
DNI
0
GTI
0
Weather Alerts
Small Craft Advisory issued September 14 at 3:03AM EDT until September 15 at 2:00AM EDT by NWS Boston/Norton MA
* WHAT...North winds 10 to 20 kt with gusts up to 25 kt and seas around 3 feet expected. * WHERE...In Massachusetts coastal waters, 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...From 11 AM this morning to 2 AM EDT Tuesday. * 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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