Forecast Details for Tok, AK

Recent Locations: Rosamond, CA Sylmar, CA Tok, AK

Tonight: A 20 percent chance of rain before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Northwest wind 5 to 10 mph becoming light west after midnight.

Tuesday: Sunny, with a high near 68. Southeast wind 5 to 10 mph.

Tuesday Night: Partly cloudy, with a low around 45. Southeast wind 5 to 10 mph.

Wednesday: Mostly sunny, with a high near 70. Calm wind becoming southeast around 5 mph in the afternoon.

Wednesday Night: Mostly cloudy, with a low around 46. West wind around 5 mph.

Thursday: A 30 percent chance of rain, mainly after 4pm. Cloudy, with a high near 63.

Thursday Night: A 30 percent chance of rain, mainly before 10pm. Cloudy, with a low around 44.

Friday: A chance of rain. Cloudy, with a high near 63.

Friday Night: A chance of rain. Cloudy, with a low around 42.

Saturday: A chance of rain. Cloudy, with a high near 60.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 41.

Sunday: A chance of rain. Mostly cloudy, with a high near 58.

Sunday Night: A chance of rain. Mostly cloudy, with a low around 42.

Monday: A slight chance of rain. Partly sunny, with a high near 61.

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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

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