Forecast Details for Forest Grove, OR

Recent Locations: Forest Grove, OR  
Current Alerts for Forest Grove, OR: Wind Advisory
Tonight: Rain, mainly after midnight. Low around 45. South wind 6 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday: Rain likely before 10am, then showers between 10am and 11am, then showers and possibly a thunderstorm after 11am. High near 55. Southwest wind 6 to 10 mph. Chance of precipitation is 90%.
Monday Night: Showers likely and possibly a thunderstorm before 11pm, then a chance of showers. Mostly cloudy, with a low around 40. West wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 70%.
Tuesday: A 30 percent chance of showers. Partly sunny, with a high near 59. Calm wind becoming west northwest 5 to 9 mph in the afternoon.
Tuesday Night: Partly cloudy, with a low around 39. West northwest wind 5 to 9 mph becoming calm after midnight.
Wednesday: Mostly sunny, with a high near 65.
Wednesday Night: Mostly clear, with a low around 44.
Thursday: Sunny, with a high near 78.
Thursday Night: Clear, with a low around 51. Breezy.
Friday: Sunny, with a high near 84.
Friday Night: Clear, with a low around 55.
Saturday: Sunny, with a high near 85.
Saturday Night: Clear, with a low around 53.
Sunday: Sunny, with a high near 81.

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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).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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

Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

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

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