Forecast Details for Lake Harmony, PA

Recent Locations: Langdon, ND Prairie Village, KS Lake Harmony, PA

Current Alerts for Lake Harmony, PA: Winter Storm Warning

Tonight: A chance of snow, mainly after 3am. Mostly cloudy, with a low around 27. Calm wind. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.

Sunday: Snow. High near 32. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Sunday Night: Snow. The snow could be heavy at times. Areas of blowing snow. Low around 23. Blustery, with a northeast wind 10 to 20 mph becoming north after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

Monday: Snow likely, mainly before 1pm. The snow could be heavy at times. Areas of blowing snow. Cloudy, with a high near 28. Blustery, with a north wind 20 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of 3 to 5 inches possible.

Monday Night: Areas of blowing snow before 1am. Mostly cloudy, with a low around 12. Blustery, with a northwest wind around 20 mph, with gusts as high as 40 mph.

Tuesday: Partly sunny, with a high near 24. Blustery.

Tuesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.

Wednesday: A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.

Wednesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

Thursday: A chance of rain. Partly sunny, with a high near 39. Chance of precipitation is 50%.

Thursday Night: Rain and snow likely. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.

Friday: A chance of rain and snow. Mostly sunny, with a high near 36. Chance of precipitation is 30%.

Friday Night: Mostly clear, with a low around 21.

Saturday: Mostly sunny, with a high near 42.

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

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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - 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