South Yarmouth, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jul 7 		Rain
Close Hourly 		70º / 63º 100% ENE 15 mph 93%
8am Rain 68º 94% E 14 mph 93%
9am Rain 68º 100% E 15 mph 93%
10am Rain 68º 88% E 14 mph 94%
11am Light Rain 69º 72% E 14 mph 92%
12pm Rain 69º 73% ENE 14 mph 90%
1pm Light Rain 68º 62% ENE 14 mph 95%
2pm Showers 68º 57% ENE 15 mph 93%
3pm Showers 68º 58% ENE 14 mph 91%
4pm Light Rain 68º 60% ENE 14 mph 92%
5pm Rain 67º 62% NE 14 mph 93%
6pm Rain 67º 63% NE 14 mph 94%
7pm Showers 66º 58% NE 14 mph 96%
8pm Showers 66º 50% NE 12 mph 97%
9pm Showers 66º 49% NE 11 mph 100%
10pm Showers 65º 43% NE 11 mph 100%
11pm Showers 65º 35% NE 11 mph 99%
Wed
Jul 8 		AM Clouds/PM Sun
View Hourly 		74º / 65º 24% N 14 mph 78%
12am Showers 65º 35% NE 11 mph 98%
1am Showers 65º 39% NNE 10 mph 97%
2am Few Showers 65º 30% NNE 11 mph 96%
3am Showers 65º 35% NNE 11 mph 97%
4am Showers 64º 44% NNE 11 mph 97%
5am Showers 65º 52% NNE 12 mph 93%
6am Showers 65º 46% NNE 13 mph 93%
7am Showers 66º 39% NNE 13 mph 95%
8am Cloudy 67º 24% NNE 14 mph 91%
9am Cloudy 68º 12% NNE 14 mph 87%
10am Mostly Cloudy 68º 9% NNE 13 mph 85%
11am Mostly Cloudy 70º 8% NNE 13 mph 79%
12pm Mostly Cloudy 71º 16% NNE 13 mph 76%
1pm Partly Cloudy 71º 7% N 12 mph 75%
2pm Partly Cloudy 72º 4% N 11 mph 72%
3pm Mostly Sunny 72º 3% N 10 mph 70%
4pm Sunny 73º 3% N 9 mph 68%
5pm Sunny 72º 3% N 7 mph 67%
6pm Sunny 71º 3% N 5 mph 69%
7pm Sunny 70º 4% N 3 mph 74%
8pm Sunny 69º 5% N 1 mph 79%
9pm Clear 66º 6% NNW 1 mph 85%
10pm Mostly Clear 66º 6% WSW 2 mph 89%
11pm Clear 66º 6% WSW 4 mph 90%
Thu
Jul 9 		Partly Cloudy
View Hourly 		81º / 69º 6% SW 15 mph 73%
12am Clear 66º 6% WSW 6 mph 90%
1am Mostly Clear 66º 7% WSW 5 mph 90%
2am Clear 67º 7% WSW 7 mph 91%
3am Clear 67º 7% WSW 7 mph 92%
4am Clear 67º 8% WSW 6 mph 92%
5am Clear 67º 8% WSW 6 mph 92%
6am Sunny 68º 8% WSW 6 mph 90%
7am Partly Cloudy 71º 6% WSW 7 mph 87%
Fri
Jul 10 		PM Showers 81º / 68º 56% SW 9 mph 79%
Sat
Jul 11 		Partly Cloudy 77º / 66º 13% NNE 10 mph 66%
Sun
Jul 12 		Mostly Sunny 76º / 66º 13% NNE 8 mph 62%
Mon
Jul 13 		Partly Cloudy 78º / 69º 15% SSW 14 mph 68%
Tue
Jul 14 		Partly Cloudy 82º / 72º 20% SW 14 mph 69%

Weather Radar for South Yarmouth, MA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Yarmouth, MA

Tuesday
High : 78ºF
E wind 11 to 13 kt, with gusts as high as 22 kt. Showers and possibly a thunderstorm before 11am, then showers likely. Patchy fog before 9am. Seas 1 ft or less.
Tuesday Night
Low : 64ºF
NNE wind 7 to 10 kt. Showers likely, mainly between 8pm and 10pm. Patchy fog before 2am. Seas 1 ft or less.
Wednesday
High : 79ºF
NNE wind 8 to 10 kt. A slight chance of showers before 9am. Seas 1 ft or less.
Wednesday Night
Low : 66ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Thursday
High : 86ºF
SW wind 6 to 11 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
Low : 71ºF
SW wind around 8 kt. A slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.
Friday
High : 90ºF
SW wind 6 to 9 kt. A chance of showers after 5pm. Seas 1 ft or less.
Friday Night
Low : 70ºF
Variable winds 5 kt or less. A chance of showers. Seas 1 ft or less.
Saturday
High : 86ºF
N wind 5 to 8 kt. Mostly sunny. Seas 1 ft or less.

NOAA Buoy Data Near South Yarmouth, MA See Map

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    Wind Speed Forecast for South Yarmouth, MA

    TuesdayWednesdayThursday
    Wind Speed (MPH) 14141412111114139166
    12pm4pm8pm12am4am8am12pm4pm8pm12am4am8am
    MPH 14141412111114139166
    DIR EENEENENENENNENNENNENNWSWWSW

    Current Weather Conditions In South Yarmouth, MA

    As Of: 4 seconds ago

    • 68ºF
    • 68ºF
    • 14mph
    • 0º (E)
    • 24mph
    • Rain
    • 3mi
    • 30.05"
    • 93%
    • 0ºF

    The weather right now in South Yarmouth, MA is Rain. The current temperature is 68°F, and the expected high and low for today, Tuesday, July 7, 2026, are 70° high temperature and 63°F low temperature. The wind is currently blowing at 14 miles per hour, and coming from the East. The wind is gusting to 24 mph. With the wind and the atmosphere the temperature feels like 68° Fahrenheit. Expected precipitation is 94 percent, with current humidity at 93 percent, and air pressure at 30.05 in. Visibility is 3 nautical miles. There are 2 current weather alert(s).

    Weather Alerts
    Flood Watch - 1:52am Tue Jul 7 2026

    ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON...

    WHAT: Flash flooding caused by excessive rainfall continues to be
    possible.

    WHERE: A portion of southeastern Massachusetts, including the
    following areas, Barnstable MA, Eastern Plymouth MA, Northern
    Bristol MA, Southern Plymouth MA and Western Plymouth MA.

    WHEN: Through this afternoon.

    IMPACTS: Excessive runoff may result in flooding of rivers,
    creeks, streams, and other low-lying and flood-prone locations.

    ADDITIONAL DETAILS: - Periods of heavy rain are expected at times through this
    morning. Heavy rain will be most likely through this
    afternoon. Widespread additional rainfall amounts of 1-3
    inches are expected. However, narrow bands of torrential
    rainfall may result in localized amounts of 2-4 inches of
    rain
    - http://www.weather.gov/safety/flood

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    You should monitor later forecasts and be prepared to take action
    should Flash Flood Warnings be issued.

    &&

    Small Craft Advisory - 1:54am Tue Jul 7 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

    WHAT: East winds 10 to 20 kt with gusts up to 25 kt and seas
    2 to 4 feet expected.

    WHERE: Cape Cod Bay, Nantucket Sound, Vineyard Sound and
    Buzzards Bay.

    WHEN: Until 8 PM EDT this evening.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&