Yesterday's rain at the airport was officially recorded as 0.36 inches. I think I got more at my place, and the radar indicated heavier rain north of I-40 and in the eastern half of town, so many places may have had more like 1/2 or 3/4 of an inch. Regardless, 0.36" puts us over 2 inches for the month. Flagstaff is now sitting at 2.08 inches for May, making this the 5th wettest May on record. It won't take much rain (if we get any) today to make us # 4 or even #3.
Its been a wet May, but this was after a pretty dry Spring and winter. We are 4.6" down for 2009, and 6" down for the water year which started September 1. I'm hoping for a late monsoon, starting sometime after July 4th. Since we've had so much moisture up here this month it isn't likely we will get the super low dew points, but it would be nice to have a few weeks of dry sunny conditions.
I think Monsoon season will begin around June 20, plus or minus 5 days, not by the calendar according to the NWS, but when dew points rise dramatically, and it begins to rain over the Sacramento Mountains. It will start about 10 days later in Arizona.