Forecast Details for Dallastown, PA

Recent Locations: Dallastown, PA  
Today: Rain before noon, then showers, mainly between noon and 2pm. High near 63. Southeast wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight: A chance of showers, mainly before 3am. Patchy fog after 5am. Otherwise, cloudy, with a low around 61. South wind 7 to 9 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 77. Southwest wind around 6 mph becoming west in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night: A slight chance of showers and thunderstorms. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 58. Northwest wind 3 to 5 mph. Chance of precipitation is 20%.
Tuesday: A chance of showers after 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 79. Northeast wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Thursday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 74. Chance of precipitation is 80%.
Thursday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 56. Chance of precipitation is 80%.
Friday: A chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 50%.
Friday Night: A chance of showers. Partly cloudy, with a low around 50. Chance of precipitation is 40%.
Saturday: A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 50%.

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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.

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Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

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

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