Precipitation analyses for the month of June show very little precipitation over Arizona over the month of June, with just some spits of precipitation in spots, including the southeastern corner of the state.
In contrast, over the past seven days, most of Arizona has observed measurable precipitation. Local accumulations reach as high as 1.5 inches.
Temperature and dewpoint time series from Tucson also show the transition quite well. Monsoon moisture surged into the region late on July 3rd, the last day that temperatures reached or exceeded 100ºF. Since then, dewpoints have been higher and maximum temperatures lower. Overnight last night the dewpoint briefly reached 70ºF. But it's a dry heat right?