Montauk NY to Marthas Vineyard out 20 NM South of Block Island Marine Forecast
| Overnight...Sw Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: S 3 Ft At 6 Seconds And E 1 Foot At 2 Seconds. |
| Tue...W Winds 10 To 15 Kt. Gusts Up To 20 Kt In The Afternoon. Seas 2 To 3 Ft. Wave Detail: Sw 3 Ft At 6 Seconds And Se 1 Foot At 9 Seconds. |
| Tue Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming Nw 5 To 10 Kt After Midnight. Seas 2 To 3 Ft. Wave Detail: W 2 Ft At 5 Seconds And Se 1 Foot At 9 Seconds. |
| Wed...N Winds Around 5 Kt, Becoming Se In The Afternoon. Seas Around 2 Ft. Wave Detail: S 2 Ft At 5 Seconds And N 1 Foot At 2 Seconds. |
| Wed Night...Sw Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds And W 1 Foot At 3 Seconds. |
| Thu And Thu Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: S 3 Ft At 7 Seconds And W 2 Ft At 3 Seconds. A Chance Of Showers. |
| Fri Through Sat Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. 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. |
| Area Forecast Discussion National Weather Service Boston/Norton MA 811pm EDT Monday August 10 2026 .WHAT HAS CHANGED... Lowered rainfall chances this evening. .KEY MESSAGES... - Above normal temperatures and humidity continues through Tuesday. Relief from the heat and humidity comes late week and especially this weekend. - Unsettled weather continues this week with shower and thunderstorms chances returning this evening as well as Wednesday night/Thursday morning. KEY MESSAGE 1...Above normal temperatures and humidity continues through Tuesday. Relief from the heat and humidity comes late week and especially this weekend. A bit of a persistence temperature forecast to start the week as the pattern is overall pretty zonal. Model soundings indicate mixing up to near 850 mb where temperatures are/will be hovering around 16C resulting in highs in the upper 80s, perhaps touching 90s in the warmest spots today and Tuesday. We'll then see a gradual cooling down through the work week and especially by the weekend. 850 mb temps drop to near 13C by mid week leading to highs in the upper 70s (high elevations) to mid 80s. The weekend, though, looks quite comfortable as dewpoints which will be elevated at times through the week but never oppressive, really drop by the weekend into the upper 40s to low 50s! This leads to the chance for some cooler nigheights in the 50s while afternoon temps may not make it out of the 70s for many locations. KEY MESSAGE 2...Unsettled weather continues this week with shower and thunderstorms chances returning this evening, as well as some time from late Wednesday night into Thursday night. Showers and thunderstorms diminished quickly after sunset. Recent radar trends supported the idea of mainly dry weather for most. Lowered rainfall chances this evening. Tuesday and Wednesday should remain dry and mostly sunny with more comfortable humidity. Complicated forecast from late Wednesday night into Thursday night. Expecting a frontal boundary to meander across southern New England. Thus, the timing is not well known. This front should provide a trigger for some showers at times, but it should not be a washout. A high pressure should finally get close enough on Friday to push this front offshore, and return drier and cooler weather into early next week. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Through Tuesday night... High Confidence. Relatively light winds and seas expected. SW winds shift W overnight through Tuesday, then NW Tuesday night. Outlook /Tuesday Night through Saturday/... Wednesday through Wednesday Night: Winds less than 25 kt. Thursday: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain showers. Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Friday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. Friday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Saturday: Winds less than 25 kt. Seas locally approaching 5 ft. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...None. RI...None. Marine None. |
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