That all depends on temps and humidity in your house. On sunny afternoons I can dry out a batch spread thin on cookie sheets in about 2 hours by putting it underneath a sunny window. Humid or rainy weather it takes more like 3 days.
You can also put it in the oven at 200 degrees. Again, spread it out thinly on a cookie sheet and shake it out every few minutes. It usually takes about a half hour that way.