NWS Forecast Office Phoenix, AZ

Increasing moisture from the south late this week will lead to slight (15-20%) chances for showers and storms across the Arizona lower deserts. Chances will mostly be focused on Friday and Saturday morning for the lower deserts, before better chances become relegated to the Arizona high terrain by Saturday afternoon. Lingering moisture on Sunday could result in additional shower/storm activity over the Arizona high terrain. The main concerns with lower desert showers and storms will be the potential for lightning and locally gusty winds. The rainfall potential is expected to be limited with this activity, though a quick 0.10" is conceivable with some of the stronger showers.

Afternoon high temperatures are likely to reach a 5 to 10 degree above normal range by this weekend, which could result in some areas of Major HeatRisk across the lower deserts. Never underestimate the heat, and plan your weekend accordingly! Remember to drink plenty of water and take breaks in air conditioning.