Forecast Details for Porterville, CA

Recent Locations: Porterville, CA

Today: A 50 percent chance of rain. Mostly cloudy, with a high near 75. West southwest wind 5 to 15 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight: Rain before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of rain after 2am. Low around 44. Northwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Sunday: Partly sunny, then gradually becoming sunny, with a high near 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

Sunday Night: Mostly clear, with a low around 43. Northwest wind 10 to 15 mph becoming light and variable in the evening.

Monday: Sunny, with a high near 71. Calm wind becoming west southwest around 5 mph in the afternoon.

Monday Night: Mostly clear, with a low around 47. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Tuesday: Sunny, with a high near 73. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 15 mph.

Tuesday Night: Mostly clear, with a low around 49. Northwest wind 5 to 10 mph becoming east northeast in the evening. Winds could gust as high as 15 mph.

Wednesday: Sunny, with a high near 77. South wind 5 to 10 mph becoming west southwest in the morning.

Wednesday Night: Clear, with a low around 53. Northwest wind around 5 mph becoming east in the evening.

Thursday: Sunny, with a high near 85. East southeast wind around 5 mph becoming west in the morning.

Thursday Night: Clear, with a low around 57. North wind 5 to 10 mph becoming east in the evening.

Friday: Sunny, with a high near 89. East southeast wind 5 to 10 mph becoming west in the morning.

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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 Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds