NWS Tucson Arizona

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6-10 day Temperature and Precipitation Outlook

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Last Map Update: Mon, Sep 28, 2026 at 8:44:51 pm MST

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Flood Watch

Flash Flood Watch

Forecast Rain Amounts Monday and Tuesday

Rain Event: Key Messages

Heavy Rain and Flooding Tuesday

A Flash Flood Watch is in effect 11 am MST this morning 11 pm MST Tuesday. Expect areas of excessive rainfall resulting in the risk for flash flooding of normally dry washes, roadway dips and other low-lying and flood prone locations.

Most likely rain totals will be 1 to 2 inches for most of southeast Arizona, with 2 to 4 inches for Sky Islands and White Mountains. Lowest rain amounts will be over western Pima County.

Tropical moisture will combine with an upper level weather system, resulting in significant rain across southeast Arizona Monday and Tuesday. A Flash Flood Watch is in effect with the potential for flash flooding and river flooding.