RECORD RAINFALL AND RAINBOWS Published Jan. 8, 2011 By 452 AMW 452 AMW MARCH AIR RESERVE BASE, CALIF. -- A rainbow arcs over the flagpole and palm trees in front of the wing headquarters building late December, 2010. Senior base meteorologist Mark Ditter said December was a record breaking month. "That was our rainiest December on record on the base, ever," he said. Previously, the record had been 6.1 inches. December 2010 saw 7.6 inches of rain.