Forecast Details for Bryn Mawr, PA

Recent Locations: Bryn Mawr, PA  
Tonight: Partly cloudy, with a low around 31. East wind 3 to 5 mph.
Friday: Mostly cloudy, with a high near 50. Southeast wind 3 to 7 mph.
Friday Night: Rain. Low around 42. Southeast wind around 8 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday: A chance of rain. Mostly cloudy, with a high near 60. South wind 8 to 10 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night: Rain, mainly after 1am. Low around 50. Southeast wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday: Rain. High near 60. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night: Rain. Low around 42. Chance of precipitation is 80%.
Monday: A chance of rain before 1pm. Mostly cloudy, with a high near 49. Chance of precipitation is 40%.
Monday Night: Mostly cloudy, with a low around 37.
Tuesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 51. Chance of precipitation is 70%.
Tuesday Night: Rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
New Year's Day: Rain and snow likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night: A chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Thursday: A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 30%.

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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 is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog

Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain