Acts of God

One of my neighbours grew a crop under contract to supply a certain quanity to a designated buyer.  It has rained like Billy-oh on it for the last couple of months (basically since it came out of the ground) and even though it has dried up and it has started to grow again he isn't likely to get his required tonnage.  However, he has a clause in his contract that allows him to default if it is an 'Act of God' that prevents him from harvesting the right amount, and the unusually high rainfall (which led to the unusually high flood we've just had) will certainly qualify for that.

Hmmm.

If one of my neighbours can't grow a decent crop because it rains far in excess of what it usually does around here (or it doesn't rain at all), and we collectively blame God, who gets the credit when he does the same work with the same inputs and gets an average yeald in an average year?  Is that solely an 'Act of Dave'?

I know that Greg and Dave and Jason and so on work hard and smart to grow what they can, and sometimes it works out and sometimes it doesn't, but is it only the really crook weather that God is in charge of, or does He deserve some credit when things go right, too?