Deer Island, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Fri
Jul 3 		Clear -º / 78º 1% W 9 mph 64%
Sat
Jul 4 		PM Showers
View Hourly 		92º / 70º 45% WNW 12 mph 52%
3am Clear 82º 1% WNW 9 mph 62%
4am Clear 81º 1% W 9 mph 64%
5am Clear 79º 1% W 8 mph 68%
6am Sunny 78º 1% W 8 mph 72%
7am Sunny 80º 1% W 8 mph 68%
8am Sunny 82º 1% W 8 mph 64%
9am Sunny 83º 1% WNW 9 mph 60%
10am Mostly Sunny 86º 1% WNW 10 mph 54%
11am Partly Cloudy 89º 1% WNW 9 mph 50%
12pm Partly Cloudy 90º 15% WNW 11 mph 47%
1pm Partly Cloudy 91º 15% WNW 11 mph 45%
2pm Partly Cloudy 91º 15% WNW 12 mph 44%
3pm Cloudy 90º 15% WNW 11 mph 44%
4pm Showers 90º 42% WNW 10 mph 44%
5pm Showers 86º 45% NW 12 mph 55%
6pm Mostly Cloudy 86º 18% WNW 8 mph 51%
7pm Mostly Cloudy 84º 13% WNW 8 mph 56%
8pm Mostly Cloudy 82º 15% NW 7 mph 62%
9pm Mostly Cloudy 80º 15% NW 6 mph 65%
10pm Few Showers 79º 33% NW 7 mph 68%
11pm Cloudy 77º 16% NW 6 mph 66%
Sun
Jul 5 		Partly Cloudy
View Hourly 		77º / 67º 7% E 10 mph 58%
12am Cloudy 76º 15% NNW 7 mph 66%
1am Mostly Cloudy 76º 15% NNW 7 mph 64%
2am Mostly Cloudy 74º 2% N 6 mph 65%
3am Mostly Cloudy 73º 2% N 6 mph 66%
4am Mostly Cloudy 72º 2% N 5 mph 68%
5am Mostly Cloudy 71º 3% N 5 mph 71%
6am Mostly Cloudy 71º 3% N 5 mph 70%
7am Partly Cloudy 73º 2% NNE 5 mph 65%
8am Mostly Cloudy 74º 1% NNE 5 mph 62%
9am Partly Cloudy 74º 1% NE 5 mph 60%
10am Partly Cloudy 75º 1% ENE 6 mph 56%
11am Mostly Cloudy 76º 1% E 7 mph 54%
12pm Mostly Cloudy 76º 1% E 8 mph 55%
1pm Partly Cloudy 77º 1% E 9 mph 54%
2pm Partly Cloudy 76º 1% E 9 mph 55%
3pm Partly Cloudy 76º 2% ESE 10 mph 56%
4pm Partly Cloudy 75º 2% ESE 10 mph 56%
5pm Partly Cloudy 75º 5% ESE 10 mph 57%
6pm Partly Cloudy 74º 8% ESE 9 mph 60%
7pm Mostly Cloudy 73º 5% ESE 8 mph 62%
8pm Mostly Cloudy 72º 4% SE 7 mph 64%
9pm Mostly Cloudy 72º 6% SE 7 mph 65%
10pm Cloudy 72º 6% SE 7 mph 68%
11pm Mostly Cloudy 71º 7% SSE 5 mph 72%
Mon
Jul 6 		PM Showers
View Hourly 		72º / 64º 52% E 11 mph 73%
12am Mostly Cloudy 70º 7% SSE 5 mph 75%
1am Cloudy 70º 8% SSE 4 mph 76%
2am Cloudy 70º 8% SSE 4 mph 76%
Tue
Jul 7 		Rain 69º / 64º 85% ENE 14 mph 84%
Wed
Jul 8 		Partly Cloudy 75º / 67º 24% NE 8 mph 77%
Thu
Jul 9 		Partly Cloudy 87º / 72º 7% SW 11 mph 62%
Fri
Jul 10 		Scattered Thunderstorms 83º / 70º 44% WSW 10 mph 66%

Weather Radar for Deer Island, MA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Deer Island, MA

Independence Day
High : 93ºF
W wind 7 to 9 kt. A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.
Saturday Night
Low : 70ºF
NW wind 6 to 8 kt. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 10pm. Seas 1 ft or less.
Sunday
High : 75ºF
NNE wind 6 to 9 kt becoming E in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
Low : 65ºF
SE wind 5 to 7 kt becoming variable and less than 5 kt. Mostly cloudy. Seas 1 ft or less.
Monday
High : 77ºF
Variable winds less than 5 kt becoming SE 5 to 9 kt in the morning. A chance of showers, mainly after 10am. Seas 1 ft or less.
Monday Night
Low : 63ºF
ESE wind around 9 kt. Showers likely, with thunderstorms also possible after 2am. Seas 1 ft or less.
Tuesday
High : 68ºF
E wind 10 to 12 kt. Showers likely, with thunderstorms also possible after 2pm. Seas 1 ft or less.
Tuesday Night
Low : 64ºF
E wind 7 to 10 kt becoming NNE after midnight. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 1am. Seas 1 ft or less.
Wednesday
High : 72ºF
N wind around 7 kt becoming E in the afternoon. Partly sunny. Seas 1 ft or less.

NOAA Buoy Data Near Deer Island, MA See Map

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    Featured Local Businesses

    Constitution Marina with downtown Boston in the background.

    Constitution Marina
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    Wind Speed Forecast for Deer Island, MA

    SaturdaySundayMonday
    Wind Speed (MPH) 98911866571085
    7am11am3pm7pm11pm3am7am11am3pm7pm11pm3am
    MPH 98911866571085
    DIR WNWWWNWWNWWNWNWNNNEEESEESESSE

    Current Weather Conditions In Deer Island, MA

    As Of: 13 minutes ago

    • 82ºF
    • 85ºF
    • 9mph
    • 0º (WNW)
    • 9mph
    • Clear
    • 10mi
    • 29.83"
    • 62%
    • 0ºF

    The weather right now in Deer Island, MA is Clear. The current temperature is 82°F, and the expected high and low for today, Saturday, July 4, 2026, are -° high temperature and 78°F low temperature. The wind is currently blowing at 9 miles per hour, and coming from the West Northwest. The wind is gusting to 9 mph. With the wind and the atmosphere the temperature feels like 85° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 62 percent, and air pressure at 29.83 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 2:22am Sat Jul 4 2026

    ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...EXTREME HEAT WARNING IS CANCELLED...

    WHAT: Heat index values 95 to 102 degrees.

    WHERE: All of southern New England except Nantucket.

    WHEN: Until 8 PM EDT this evening.

    IMPACTS: Hot temperatures and high humidity may cause heat
    illnesses.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    &&