Does Scripture mention whether it rained before the flood? I've often heard it said that the flood of Noah was the first time that the earth experienced rain. This is the passage people use:


  Genesis 2:5-6 ESV When no bush of the field was yet in the land and no small plant of the field had yet sprung up—for the Lord God had not caused it to rain on the land, and there was no man to work the ground, and a mist was going up from the land and was watering the whole face of the ground


Is this saying that it didn't rain at all until Noah's time, or just in the creation week? The flood didn't happen for over 1000 years after creation--that's a lot of time to not have any rain. Is there more scripture that adds credence to the argument that there was no rain before the flood? Is there scripture that says otherwise?
In support of the idea that it did not rain is the very next verse:

Genesis 2:6


  But a mist went up from the earth and watered the whole face of the
  ground.


No further mention is made of rain until the Flood account. Anything beyond this is conjecture on our part.