it depends on What the deviation from the NORM is ..If Rainfall is 30 % higher ..or 30 % Lower we could get a 30% drop in Stocks. That is part of the Study .. BUT….That was before Government started manipulating S&P Futures Prices ..according to Statistical Study done in 1939 .
Yes there is a connection.. the Worse the weather ..the bigger the Drop in stocks can be. The KEY is the ” the % deviation from the NORM “..