where is the best place to find out if its going to rain today?

Look up at the sky. A lot can be learned from studying the different types of clouds, and what they mean in terms of the upcoming weather.

Iphone apps or Yahoo Weather

Or just look up

TWC.com lists the hour by hour with the percentage chance of rain under the hourly forecast.

So does the "Weather bug"

The National Weather Service is the best place to get the most up-to-date forecasts.

Click on the map at http://www.weather.gov/ for the NWS office.

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My observation is the predictions are usually wrong and are smoke and mirrors. Does a 10% chance of rain mean one drop of rain somewhere in a trillion square meter area, or something else?