What to know
- Beautiful Saturday: Sunny, dry and seasonably warm today.
- Rain returns Sunday: Showers develop late Sunday afternoon, with periods of rain and a few thunderstorms Sunday night. Some downpours could be locally heavy Sunday night, with a risk of minor urban and poor-drainage flooding and isolated flash flooding for the morning commute Monday.
- Boat and beach conditions deteriorate Sunday: Increasing winds and seas, with a moderate rip current risk and the potential for a high risk at some ocean beaches.
- Dry stretch: Tuesday and Wednesday look mainly dry and seasonably warm.
Rest of Today
Saturday remains the pick of the weekend. Skies will be mostly sunny during the day, with dry weather continuing into the evening. Clouds increase somewhat tonight, but it should remain dry. Winds become light and variable, making for a pleasant Saturday night.
Boat and Beach
Boating conditions will be favorable today, with light winds and seas remaining well below Small Craft Advisory levels. The rip current risk is low today at ocean beaches.
Conditions change Sunday as winds turn increasingly southerly and strengthen. Seas will build, especially Sunday night, with ocean waves becoming rough. The rip current risk will increase to moderate Sunday, particularly during the afternoon as winds and seas build. The risk could become high on Sunday.
Anyone heading to the beach Sunday should check the latest beach warnings and rip current conditions before entering the water.
Sunday Late Day Storms
Sunday starts relatively quiet, but the weather deteriorates as the day goes on. Clouds will increase, humidity will rise and southerly winds will strengthen. A few showers could develop late in the afternoon, with more widespread showers arriving Sunday evening.
The greatest concern comes Sunday night when showers and a few thunderstorms could produce locally heavy downpours. Atmospheric moisture will be unusually high, allowing some storms to produce very heavy rainfall over a short period. The overall flash flood threat remains limited, but localized flooding is possible, especially in poor-drainage and urban areas.
Early Work Week
Monday starts wet, particularly early in the morning, with lingering showers and perhaps an isolated thunderstorm. Conditions should gradually improve through the morning as the system moves offshore, with increasing sunshine during the afternoon.
Monday night turns quieter, with partly cloudy skies and mild conditions. High pressure then builds back into the region, setting up mainly dry and seasonably warm weather for Tuesday and Wednesday.
Rest of next week
Tuesday and Wednesday look like the most consistently dry days of the week, with plenty of sunshine and seasonably warm temperatures.
The next weather system approaches Thursday, bringing another chance for showers and a few thunderstorms. The exact timing remains uncertain, but there is a chance for unsettled weather Thursday into Thursday night. Behind that system, Friday currently looks mainly sunny and somewhat cooler.
Beach and Tide Forecast
Futurecast
Here is a look at the latest future radar for Long Island through the weekend.
Water Quality
Every Thursday, there is an update to water quality at 30 sites around Long Island from The Gobler Laboratory at Stony Brook University. This week, the water quality is generalized as "fair," with 10 sites having good water quality, 13 having fair water quality and seven having poor water quality.
The main issue at the "poor" sites was harmful algal blooms that are harmful to marine life, but not humans. Reminder: check with the county health departments for more information on where swimming is permitted as well as more information.