The magnetic compass is an old Chinese invention, probably first made in China during the Qin dynasty (221-206 B.C.). Chinese fortune tellers used lodestones (a mineral composed of an iron oxide which aligns itself in a north-south direction) to construct their fortune telling boards.
Guide to Pennsylvania weather in April. The average maximum daytime temperature in Pennsylvania in April is a comfortable 17Â°C (63Â°F). The average night-time temperature is usually a cold 5Â°C (41Â°F). There are usually 7 hours of bright sunshine each day, which represents 55% of the 13 hours of daylight. Expect 95mm (3.7 inches) of rainfall across the whole of April with 11 days with some rain falling.
April Atlantic Ocean Water Temperatures. Average April Atlantic Ocean water temperatures tend to range from a chilly low to mid 50 degrees in Virginia, to the mid to high 60 degree marks in South Carolina and Georgia, reaching into the mid to upper 70 degree range in mid Florida.1 of 6 Show All.pril brings idyllic spring temperatures and flowers gardens bursting with spring color in many areas of the Southeast. High average temperatures tend to range from the upper 60s to uppers 70s with low average temperatures in the high 40s and 50s in most areas. State-by-State Average April Weather Tables.