Wet = Rain, Bright = Sunny, Windy = High probability of the Marilyn Monroe effect.

My favorite part of the entire page is the warning at the end:

Don't risk your life or well-being based on these indicators and proverbs. Predicting the weather in this manner is not an exact science.

Considering even Meteorologists are usually batting only about .200, I'd have to agree. That said, the advice isn't totally useless. Though some are better than others.

• Check the grass for dew at sunrise.
• Remember the rhyme: "Red sky at night, sailor's delight; Red sky at morning, sailors take warning."
• Look for a rainbow in the west.
• Take a deep breath. Close your eyes and smell the air.
• Watch the clouds.
• Observe animals. They are more likely to react to changes in air pressure than we are.
• Look at the moon during the night.

How to predict the weather without a forecast. [Wikihow]