Forecast Details for Princeton, NJ

Recent Locations: Princeton, NJ  
Today: Sunny, with a high near 55. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight: Mostly clear, with a low around 36. Northwest wind 5 to 10 mph.
Saturday: A chance of showers after 2pm. Increasing clouds, with a high near 58. West wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night: A chance of showers, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 45. Southwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday: Partly sunny, with a high near 61. West wind around 10 mph, with gusts as high as 20 mph.
Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 42. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday: Rain likely, mainly between 8am and 2pm. Cloudy, with a high near 51. Chance of precipitation is 60%.
Monday Night: Rain, mainly after 8pm. Low around 43. Chance of precipitation is 80%.
Tuesday: Rain. High near 52. Chance of precipitation is 80%.
Tuesday Night: Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Wednesday: Rain likely. Mostly cloudy, with a high near 54. Breezy. Chance of precipitation is 60%.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.
Thursday: Mostly sunny, with a high near 52. Breezy.

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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)

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.

North American Water Vapor Map

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation