Forecast Details for Holtsville, NY

Recent Locations: Holtsville, NY  
Current Alerts for Holtsville, NY: Coastal Flood Statement
This Afternoon: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 62. Windy, with a south wind 29 to 31 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Tonight: Rain before midnight, then a chance of showers between midnight and 2am. The rain could be heavy at times. Low around 35. Breezy, with a south wind 16 to 22 mph becoming west in the evening. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday: Sunny, with a high near 40. Wind chill values between 25 and 30. West wind 16 to 18 mph, with gusts as high as 33 mph.
Thursday Night: Mostly clear, with a low around 22. West wind 7 to 11 mph, with gusts as high as 28 mph.
Friday: Sunny, with a high near 37. Northwest wind 6 to 8 mph.
Friday Night: Mostly clear, with a low around 25.
Saturday: Mostly sunny, with a high near 41.
Saturday Night: Mostly cloudy, with a low around 31.
Sunday: A 30 percent chance of rain after 1pm. Mostly cloudy, with a high near 48.
Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Monday: A 30 percent chance of rain. Mostly cloudy, with a high near 51.
Monday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Tuesday: A 40 percent chance of rain. Partly sunny, with a high near 53.

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Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Stratocumulus Clouds Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds