Butttt …. Jeff Masters said that heavy rain is caused by warm temperatures.
Billings (Montana) had already received more than 3 inches of rain Tuesday, setting an all-time daily precipitation record for the city.
http://www.hprcc.unl.edu/products/maps/acis/wrcc/nw/30dTDeptWRCC-NW.png
98% of climate scientists agree in peer reviewed studies that hotcold rain is every bit as wet as coldhot rain.