Forecast Details for Westerville, OH

Recent Locations: Chengdu, Westerville, OH

Today: Sunny, with a high near 77. East wind 6 to 9 mph becoming south in the afternoon.

Tonight: Mostly clear, with a low around 63. South wind 8 to 10 mph, with gusts as high as 20 mph.

Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 81. Southwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Low around 52. Southwest wind 8 to 14 mph becoming north after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: A slight chance of showers after noon. Partly sunny, with a high near 69. Northeast wind 3 to 7 mph. Chance of precipitation is 20%.

Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. 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 thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

Friday: A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 50%.

Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.

Saturday: Mostly sunny, with a high near 61.

Saturday Night: Mostly clear, with a low around 43.

Sunday: Sunny, with a high near 69.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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