Arizona weather forecast: Valley braces for overnight storms before triple-digit heat returns

Name: Evening Weather Forecast - 3/9/26
Uploaded: 2026-03-09T06:22:40-07:00
Description: After a sunny and warm day in the Valley, the chance for showers and storms are ramping up for Monday evening. FOX 10's Erica Horvatin has more on the cooler temps and moisture heading our way.

Evening Weather Forecast - 3/9/26

After a sunny and warm day in the Valley, the chance for showers and storms are ramping up for Monday evening. FOX 10's Erica Horvatin has more on the cooler temps and moisture heading our way.

PHOENIX - Active weather is in the forecast today into Tuesday, before a big warm up impacts the state.

A storm system will shift from the southwest of our state, crossing over far southern Arizona into the night and early Tuesday morning. Ahead of the system, scattered showers and a few thunderstorms are expected to impact our state. Particularly, southern and southeastern Arizona have the best chance of rain.

Today:

Monday was a mostly sunny and cooler day across Arizona, but showers and thunderstorms are expected throughout the evening and overnight. A low pressure system is moving toward southern Arizona, bringing tropical moisture into the state.

Isolated showers and thunderstorms will be possible in the Valley during the early evening, and a couple rounds of scattered showers and thunderstorms from around 8 p.m. to 2 a.m. on Tuesday. These storms will have the potential to bring heavy rain, strong winds and small hail to the Valley.

The mountains of central and eastern Arizona will also see rain moving in this evening, with the best chance of showers and storms from around 8 p.m. through 6 a.m.

This week:

Tuesday will be a mainly dry day across Arizona, except for the Mogollon Rim and White Mountains, where showers and storms will be possible into the afternoon hours. Temperatures will stay cooler on Tuesday, with highs in the mid-70s in the Valley.

High pressure will rebuild across the west Wednesday through Friday, causing temperatures to spike back into the 80s on Wednesday, and the 90s on Thursday through the weekend.

You can always check the latest weather conditions by visiting the FOX 10 Phoenix weather page, or download the Free FOX 10 Weather app, which is available on Apple iOS and Android.

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