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Forecast

The following is the 7 day weather and marine forecast for the Chatham, MA area. This Information was last updated Wednesday, September 2019 at 10:42 PM. These forecasts are provided by NOAA.

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

Wednesday - September 18

Mostly Sunny
Low: 52 ºF
High: 63 ºF

Marine forcast for Wednesday Night
Winds from the North East. 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 25 knots. Seas around 7 feet.

Thursday - September 19

Mostly Sunny
Low: 62 ºF
High: 72 ºF

Marine forcast for Thursday
Winds from the North East. 10 to 15 knots with gusts up to 20 knots. Seas around 6 feet.
Marine forcast for Thursday Night
Winds from the North East. 10 to 15 knots, becoming North West 5 to 10 knots after midnight. Seas around 6 feet, building to 8 feet after midnight.

Friday - September 20

Mostly Sunny
Low: 61 ºF
High: 72 ºF

Marine forcast for Friday
Winds from the West. 5 to 10 knots. Seas around 11 feet.
Marine forcast for Friday Night
Winds from the West. 5 to 10 knots. Seas around 10 feet, subsiding to 8 feet after midnight.

Saturday - September 21

Mostly Sunny
Low: 63 ºF
High: 72 ºF

Marine forcast for Saturday
Winds from the North. 5 to 10 knots. Seas 6 to 7 feet.
Marine forcast for Saturday Night
Winds from the South East. Around 5 knots, becoming South after midnight. Seas around 5 feet, subsiding to 3 feet after midnight.

Sunday - September 22

Chance Rain Showers
Low: 62 ºF
High: 72 ºF

Marine forcast for Sunday
Winds from the South. 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 3 feet.
Marine forcast for Sunday Night
Winds from the South West. 10 to 15 knots. Gusts up to 20 knots after midnight. Seas around 4 feet.

Monday - September 23

Chance Rain Showers
Low: 58 ºF
High: 71 ºF

Marine forcast for Monday
Winds from the South West. 15 to 20 knots. Seas around 5 feet.
Marine forcast for Monday Night
Winds from the South West. 10 to 15 knots. Gusts up to 20 knots in the evening. Seas around 5 feet.

Tuesday - September 24

Partly Sunny
Low: na
High: 68 ºF

Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.