Forecast Details for South Deerfield, MA

Recent Locations: Echo Lake, CA Horse Creek, WY South Deerfield, MA

Today: Sunny and hot, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.

Tonight: Mostly clear, with a low around 65. Calm wind.

Wednesday: A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny and hot, with a high near 91. Heat index values as high as 96. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Light south wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 88. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 40%.

Thursday Night: A slight chance of showers before 10pm. Mostly clear, with a low around 63. Light north wind. Chance of precipitation is 20%.

Friday: Sunny, with a high near 86. North wind around 5 mph.

Friday Night: Mostly clear, with a low around 58. Calm wind.

Saturday: Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

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

Sunday: Sunny and hot, with a high near 92. West wind 3 to 7 mph.

Sunday Night: Partly cloudy, with a low around 63. West wind around 5 mph becoming light and variable.

Monday: Sunny, with a high near 84. North wind around 6 mph.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle