Forecast Details for Calpine, CA

Recent Locations: Argillite, KY Trion, GA Calpine, CA

Current Alerts for Calpine, CA: High Wind Warning Winter Weather Advisory

Overnight: Showers likely. Snow level 6700 feet. Mostly cloudy, with a low around 34. Southwest wind around 5 mph. Chance of precipitation is 70%.

Wednesday: Showers. Snow level 6600 feet. High near 45. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Wednesday Night: Rain showers before 8pm, then rain and snow showers between 8pm and 2am, then a chance of snow showers after 2am. Snow level 6600 feet lowering to 5000 feet after midnight . Low around 25. Southwest wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Thursday: A 40 percent chance of snow showers before 11am. Mostly sunny, with a high near 47. West wind 5 to 10 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.

Thursday Night: Mostly clear, with a low around 20. Northwest wind around 5 mph becoming east in the evening.

Friday: Sunny, with a high near 57. East wind around 5 mph.

Friday Night: Clear, with a low around 26.

Saturday: Sunny, with a high near 66.

Saturday Night: Mostly clear, with a low around 31.

Sunday: Sunny, with a high near 69.

Sunday Night: Partly cloudy, with a low around 36.

Monday: Mostly sunny, with a high near 67.

Monday Night: Mostly clear, with a low around 35.

Tuesday: Sunny, with a high near 64.

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

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)

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 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

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