Phoenix hit 110 degrees on Saturday, marking the city’s first 110-degree temperature of 2026 as Arizona moved into a hotter, more unsettled stretch. By Sunday evening, showers and storms were firing up across the high country and southern Arizona, while the Valley was still expected to stay mostly dry.

For people watching Tucson weather and the wider state pattern, that shift mattered because the heat had not let up even as monsoonal moisture started to arrive. Friday reached 106 degrees in Phoenix, and Saturday’s high was four degrees above normal, with clouds building across the Valley as moisture moved in from the south. The weekend also brought only light precipitation in the Valley, even as rain chances increased elsewhere.

Ashley Loaeza said the start of the week could still bring more storms, with rain chances holding and temperatures remaining above average and near 110 degrees before readings ease later in the week. Storm chances in the high country were expected to continue next week, and gusty winds were possible in the Valley by Tuesday night. The same setup also raised the risk of gusty winds, blowing dust and dry lightning along northern and eastern Maricopa County, where storms nearby could send out wind without much rain reaching the Valley itself.

The early 110-degree reading came during what forecasters described as a hot and humid start to the weekend, with an unseasonably hot ridge of high pressure settled over Arizona. The average first 110-degree day arrives on June 11, so this one landed early. That leaves the key question for the start of the workweek less about whether storms will exist and more about where they will fall, because the Valley may hear the thunder without getting much relief from it.