Plymouth (US)
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Weather Forecast for Plymouth (US)

Massachusetts, United States of America

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Patchy rain nearby

Current Weather - Plymouth (US): 14°C

Massachusetts, United States of America

Patchy rain nearby

Feels like 9°C

Wind

26 km/h ENE

Humidity

67%

Pressure

1031 mb

UV Index

0

Visibility

10 km
Overcast

Overcast

Wednesday, September 23, 2026

High

16°C

Low

13°C

Rain Chance

18%

Hourly Forecast

Overcast 16°C
13:00
Patchy rain nearby 16°C
14:00
Overcast 16°C
15:00
Overcast 15°C
16:00
Overcast 14°C
17:00
Overcast 14°C
18:00
Clear 13°C
19:00
Clear 13°C
20:00
Clear 13°C
21:00
Clear 13°C
22:00
Clear 13°C
23:00
Sep 24

Day Statistics

Maximum Wind

30 km/h

Humidity

60%

Precipitation

0 mm

UV Index

5

Visibility

10 km

Rain Chance

18%

Snow Chance

0%

Sun & Moon

Sunrise

06:31 AM

Sunset

06:38 PM

Moonrise

05:23 PM

Moonset

03:23 AM

Moon Phase

Waxing Gibbous

Moon Illumination

95%

Air Quality

PM2.5

7.9

μg/m³

PM10

11.4

μg/m³

NO₂

2

μg/m³

O₃

68.6

μg/m³

SO₂

0.5

μg/m³

CO

125.4

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

1.31

Diffuse Radiation

0.62

DNI

0

GTI

0

Weather Alerts

Gale Warning issued September 22 at 4:29PM EDT until September 24 at 8:00PM EDT by NWS Boston/Norton MA

Cape Cod Bay Sep 22, 04:29 PM - Sep 23, 05:30 AM
Severity: Moderate Urgency: Expected

* WHAT...Northeast winds 20 to 25 kt with gusts up to 35 kt and seas 4 to 6 feet expected. * WHERE...Cape Cod Bay. * WHEN...From 8 PM Wednesday to 8 PM EDT Thursday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.

Event: Gale Warning Certainty: Likely Category: Met

Small Craft Advisory issued September 23 at 2:24AM EDT until September 23 at 8:00PM EDT by NWS Boston/Norton MA

Cape Cod Bay Sep 23, 02:24 AM - Sep 23, 03:30 PM
Severity: Minor Urgency: Expected

* WHAT...For the Small Craft Advisory, northeast winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 feet. For the Gale Warning, northeast winds 20 to 30 kt with gusts up to 40 kt and seas 4 to 6 feet expected. For the Storm Watch, northeast winds 30 to 35 kt with gusts up to 50 kt and seas 6 to 9 feet possible. * WHERE...Cape Cod Bay. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Warning, from 8 PM this evening to 8 AM EDT Friday. For the Storm Watch, from Friday morning through Saturday evening. * IMPACTS...Storm force winds and hazardous seas could capsize or damage vessels and reduce visibility.

Mariners should prepare to remain in port, alter course, and/or secure the vessel before the onset of severe conditions.

Event: Small Craft Advisory Certainty: Likely Category: Met

Gale Warning issued September 23 at 2:24AM EDT until September 25 at 8:00AM EDT by NWS Boston/Norton MA

Cape Cod Bay Sep 23, 02:24 AM - Sep 23, 03:30 PM
Severity: Moderate Urgency: Expected

* WHAT...For the Small Craft Advisory, northeast winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 feet. For the Gale Warning, northeast winds 20 to 30 kt with gusts up to 40 kt and seas 4 to 6 feet expected. For the Storm Watch, northeast winds 30 to 35 kt with gusts up to 50 kt and seas 6 to 9 feet possible. * WHERE...Cape Cod Bay. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Warning, from 8 PM this evening to 8 AM EDT Friday. For the Storm Watch, from Friday morning through Saturday evening. * IMPACTS...Storm force winds and hazardous seas could capsize or damage vessels and reduce visibility.

Mariners should prepare to remain in port, alter course, and/or secure the vessel before the onset of severe conditions.

Event: Gale Warning Certainty: Likely Category: Met

Storm Watch issued September 23 at 2:24AM EDT until September 26 at 8:00PM EDT by NWS Boston/Norton MA

Cape Cod Bay Sep 23, 02:24 AM - Sep 23, 03:30 PM
Severity: Severe Urgency: Future

* WHAT...For the Small Craft Advisory, northeast winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 feet. For the Gale Warning, northeast winds 20 to 30 kt with gusts up to 40 kt and seas 4 to 6 feet expected. For the Storm Watch, northeast winds 30 to 35 kt with gusts up to 50 kt and seas 6 to 9 feet possible. * WHERE...Cape Cod Bay. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Warning, from 8 PM this evening to 8 AM EDT Friday. For the Storm Watch, from Friday morning through Saturday evening. * IMPACTS...Storm force winds and hazardous seas could capsize or damage vessels and reduce visibility.

Mariners should prepare to remain in port, alter course, and/or secure the vessel before the onset of severe conditions.

Event: Storm Watch Certainty: Possible Category: Met