Forecast Details for South Deerfield, MA

Recent Locations: Rio Vista, CA Sundown, NY South Deerfield, MA

This Afternoon: A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Increasing clouds and hot, with a high near 92. Heat index values as high as 95. South wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms. Some of the storms could be severe. Areas of fog after 4am. Otherwise, cloudy, with a low around 69. South wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 88. Light and variable wind becoming north around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Partly cloudy, with a low around 65. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: Sunny, with a high near 87. Northeast wind around 6 mph.

Friday Night: Mostly clear, with a low around 62. Calm wind.

Saturday: Sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

Saturday Night: Mostly clear, with a low around 64. Light south wind.

Sunday: A chance of showers after 4pm. Mostly sunny and hot, with a high near 91. West wind 3 to 7 mph. Chance of precipitation is 30%.

Sunday Night: A chance of showers before 10pm. Partly cloudy, with a low around 63. North wind around 6 mph. Chance of precipitation is 30%.

Monday: Sunny, with a high near 82. North wind around 6 mph.

Monday Night: Partly cloudy, with a low around 56. North wind 3 to 5 mph.

Tuesday: Mostly sunny, with a high near 77. North wind around 6 mph.

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Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

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