6. Do the Dew
Ever heard this one? When the dew is on the grass, rain will never come to pass. When grass is dry at morning light, look for rain before the night. There's some pretty sound meteorology behind this one. When dew has the conditions form overnight, it's because clear skies allowed the earth to cool and water condensed to make dew (or frost in colder times of the year). But on cloudy nights, the clouds keep atmospheric heat in and prevent dew from forming. What does it all mean? Unless you have a very odd weather pattern coming, if the night skies make dew, the following day will be clear.