Weather Forecast for Cape Cod

Massachusetts, United States of America

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Overcast

Current Weather - Cape Cod: 17°C

Massachusetts, United States of America

Overcast

Feels like 15°C

Wind

14 km/h WNW

Humidity

68%

Pressure

1022 mb

UV Index

1

Visibility

10 km

Overcast

Overcast

Tuesday, September 08, 2026

High

25°C

Low

14°C

Rain Chance

13%

Hourly Forecast

Sunny 20°C
14:00
Partly Cloudy 21°C
15:00
Partly Cloudy 20°C
16:00
Partly Cloudy 20°C
17:00
Partly Cloudy 19°C
18:00
Overcast 18°C
19:00
Overcast 18°C
20:00
Overcast 19°C
21:00
Overcast 19°C
22:00
Overcast 19°C
23:00
Sep 09

Day Statistics

Maximum Wind

26 km/h

Humidity

68%

Precipitation

0 mm

UV Index

6

Visibility

10 km

Rain Chance

13%

Snow Chance

0%

Sun & Moon

Sunrise

06:14 AM

Sunset

07:03 PM

Moonrise

02:35 AM

Moonset

05:40 PM

Moon Phase

Waning Crescent

Moon Illumination

6%

Air Quality

PM2.5

5

μg/m³

PM10

5.9

μg/m³

NO₂

7.5

μg/m³

O₃

82.3

μg/m³

SO₂

0.8

μg/m³

CO

168.1

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

28.05

Diffuse Radiation

12.78

DNI

0

GTI

0

Weather Alerts

Gale Watch issued September 8 at 1:22AM EDT until September 10 at 12:00PM EDT by NWS Boston/Norton MA

Cape Cod Bay; Nantucket Sound; Vineyard Sound; Buzzards Bay Sep 8, 01:22 AM - Sep 8, 02:30 PM
Severity: Moderate Urgency: Future

* WHAT...Southwest winds 15 to 20 kt with gusts up to 35 kt and seas 3 to 5 feet possible. * WHERE...Cape Cod Bay, Nantucket Sound, Vineyard Sound and Buzzards Bay. * WHEN...From Wednesday evening through Thursday morning. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and seas.

Event: Gale Watch Certainty: Possible Category: Met