Phoenix weather: Pacific storm system brings rain to the Valley this weekend

Posted: Updated:
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland

PHOENIX -- A storm system tracking out of the Pacific Northwest is expected to bring rain the Arizona, including the Valley, this weekend.

This system will tap into moisture already in place across the state and produce storms that may be severe at times with damaging winds, hail and localized flooding. An isolated tornado is also not out of the question across Northern Arizona.

The storms will start firing off today across the higher elevations. The Valley could see storms starting tonight. The heaviest rain will happen late Saturday morning through Saturday evening. The frontal system is expected to move out of Arizona Sunday.

Anywhere from a quarter of an inch to an inch and a half of rain can be expected in Valley communities by Saturday evening. The high country will see higher totals of one to three inches.

This system will usher in cooler and produce a temperature tumble. By Monday morning, we could see frost in the higher elevations. Dry weather and unseasonably cool temperatures next week will bring the monsoon to a close.

Friday afternoon in the Phoenix-metro, look for a high of around 100 under mostly sunny to partly cloudy skies with an overnight low of 78. By Saturday, the high dips to 87 with a low of 71. Sunday, look for a high of 89 with mostly sunny skies and lows dropping into the 60s.

Get the latest forecast for your neighborhood