Nearby Harbors
42.3483’ N, 70.9600’ W

Deer Island, MA

57°
H 59°
L 45°
NE
8mph
Low tide
12:15 pm
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Deer Island, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Oct 19 		Mostly Sunny
Close Hourly 		59º / 45º 3% ENE 11 mph 61%
12pm Sunny 57º 1% NE 8 mph 59%
1pm Sunny 58º 1% ENE 9 mph 59%
2pm Mostly Sunny 58º 1% ENE 11 mph 57%
3pm Partly Cloudy 55º 1% ENE 10 mph 63%
4pm Partly Cloudy 55º 1% ENE 10 mph 65%
5pm Partly Cloudy 54º 2% ENE 9 mph 68%
6pm Partly Cloudy 53º 2% NE 8 mph 70%
7pm Partly Cloudy 52º 5% NE 7 mph 73%
8pm Partly Cloudy 51º 6% NE 7 mph 75%
9pm Mostly Cloudy 50º 6% NNE 7 mph 77%
10pm Partly Cloudy 50º 7% NNE 8 mph 79%
11pm Partly Cloudy 49º 7% N 8 mph 80%
Tue
Oct 20 		Partly Cloudy
View Hourly 		60º / 46º 6% NNE 18 mph 64%
12am Partly Cloudy 49º 8% N 8 mph 81%
1am Partly Cloudy 48º 9% N 8 mph 83%
2am Partly Cloudy 47º 14% NNW 8 mph 84%
3am Mostly Cloudy 47º 9% N 9 mph 85%
4am Mostly Cloudy 47º 7% N 10 mph 84%
5am Mostly Cloudy 46º 7% N 10 mph 85%
6am Mostly Cloudy 47º 7% N 10 mph 82%
7am Partly Cloudy 47º 6% N 11 mph 80%
8am Mostly Cloudy 49º 5% N 12 mph 78%
9am Cloudy 51º 4% N 14 mph 74%
10am Mostly Cloudy 54º 3% NNE 15 mph 68%
11am Mostly Cloudy 57º 1% NNE 17 mph 63%
12pm Partly Cloudy 58º 1% NNE 17 mph 60%
1pm Mostly Cloudy 59º 0% NNE 18 mph 57%
2pm Partly Cloudy 59º 0% NNE 18 mph 55%
3pm Partly Cloudy 59º 0% NE 17 mph 55%
4pm Partly Cloudy 58º 0% NE 15 mph 58%
5pm Partly Cloudy 57º 1% NE 14 mph 59%
6pm Partly Cloudy 56º 2% NNE 12 mph 63%
7pm Partly Cloudy 55º 3% NNE 12 mph 65%
8pm Clear 55º 3% NNE 12 mph 66%
9pm Clear 54º 2% NNE 14 mph 65%
10pm Clear 54º 2% NNE 16 mph 64%
11pm Clear 53º 2% NNE 17 mph 65%
Wed
Oct 21 		AM Clouds/PM Sun
View Hourly 		53º / 44º 5% NNE 19 mph 69%
12am Clear 52º 2% NNE 18 mph 66%
1am Clear 51º 2% NNE 17 mph 69%
2am Clear 50º 3% NNE 17 mph 70%
3am Clear 49º 3% NNE 17 mph 74%
4am Partly Cloudy 48º 4% NNE 17 mph 76%
5am Partly Cloudy 48º 4% NNE 16 mph 77%
6am Mostly Cloudy 47º 5% NNE 16 mph 79%
7am Cloudy 47º 5% NNE 16 mph 79%
8am Cloudy 49º 3% NNE 16 mph 75%
9am Cloudy 50º 2% NNE 17 mph 73%
10am Cloudy 51º 2% NNE 18 mph 70%
11am Cloudy 51º 2% NNE 19 mph 69%
Thu
Oct 22 		Partly Cloudy 60º / 43º 9% N 13 mph 58%
Fri
Oct 23 		Sunny 53º / 38º 3% N 15 mph 48%
Sat
Oct 24 		Sunny 59º / 40º 3% NW 8 mph 52%
Sun
Oct 25 		Sunny 63º / 44º 3% WSW 7 mph 53%
Mon
Oct 26 		Partly Cloudy 69º / 46º 3% WSW 9 mph 53%

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

This Afternoon
High : 58ºF
E wind 5 to 7 kt. Mostly sunny. Seas 1 ft or less.
Tonight
Low : 47ºF
NE wind 5 to 8 kt becoming N after midnight. Mostly cloudy. Seas 1 ft or less.
Tuesday
High : 60ºF
NNE wind 11 to 16 kt, with gusts as high as 27 kt. Partly sunny. Seas 1 ft or less.
Tuesday Night
Low : 51ºF
NNE wind 10 to 13 kt increasing to 13 to 16 kt after midnight. Winds could gust as high as 25 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
High : 54ºF
NE wind 16 to 18 kt, with gusts as high as 25 kt. Partly sunny. Seas 1 ft or less.
Wednesday Night
Low : 48ºF
N wind around 12 kt. A slight chance of showers after 11pm. Seas 1 ft or less.
Thursday
High : 59ºF
N wind 7 to 10 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
Low : 48ºF
N wind 12 to 16 kt. Mostly clear. Seas 1 ft or less.
Friday
High : 55ºF
N wind around 17 kt. Sunny. Seas 1 ft or less.

NOAA Buoy Data Near Deer Island, MA See Map

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    Constitution Marina with downtown Boston in the background.

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    Wind Speed Forecast for Deer Island, MA

    MondayTuesdayWednesday
    Wind Speed (MPH) 810781012171512181716
    4pm8pm12am4am8am12pm4pm8pm12am4am8am12pm
    MPH 810781012171512181716
    DIR NEENENENNNNNENENNENNENNENNE

    Current Weather Conditions In Deer Island, MA

    As Of: 5 minutes ago

    • 57ºF
    • 55ºF
    • 8mph
    • 0º (NE)
    • 8mph
    • Sunny
    • 10mi
    • 30.45"
    • 59%
    • 0ºF

    The weather right now in Deer Island, MA is Sunny. The current temperature is 57°F, and the expected high and low for today, Monday, October 19, 2026, are 59° high temperature and 45°F low temperature. The wind is currently blowing at 8 miles per hour, and coming from the Northeast. The wind is gusting to 8 mph. With the wind and the atmosphere the temperature feels like 55° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 59 percent, and air pressure at 30.45 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 10:03am Mon Oct 19 2026

    ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 4 PM EDT WEDNESDAY...

    WHAT: Northeast winds 15 to 25 kt with gusts up to 30 kt and
    waves 2 to 4 feet expected.

    WHERE: In Massachusetts coastal waters, Boston Harbor. In
    Rhode Island coastal waters, Narragansett Bay.

    WHEN: From 8 AM Tuesday to 4 PM EDT Wednesday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

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

    &&

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