Weather Outlook

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Date & Time: 09/26/2017 8:30 AM MST

Forecaster: Henz, D.

Synopsis:
Yesterday’s forecast remains on track for today with mild temperatures and quiet weather before a slow warming trend through the remainder of the week. Looking at the big picture, general troughing across the western US continues as a follow-up disturbance takes shape across the Desert Southwest later today into Wednesday. This system will have little effect on the weather across southcentral AZ outside of an uptick in cloud cover and delaying an inevitable warming trend. It’s worth noting, some moisture will move back into the eastern third of the state and isolated shower/t-storm activity is expected there tomorrow into Thursday. After the system moves east, plan on daily highs returning into the mid to upper 90s to round out the work week.

For today plan on partly to mostly sunny skies with periods of passing high clouds. Afternoon temperatures will warm into the 89˚F-91˚F range around the Valley with mid 80s across the higher terrain locales. Variable winds will generally remain in the 3-8mph with no gusts of any consequence throughout the day. Overnight lows will once again dip into the mid to low 60s around the urban corridor with outlying locations reaching the upper 50s.

Similar conditions will persist into tomorrow with lingering high clouds and daytime highs climbing into the upper 80s to low 90s around the Valley. Southwest winds will generally remain in the 3-7mph range with localized gusts around 10-15mpn into the evening. Don’t be surprised to see afternoon/evening storm activity across the higher terrain areas north/east of the county. No storms are expected across the Valley. A steady warming trend will get underway heading into Thursday and Friday. Plan on daily highs returning to the mid to upper 90s under sunny skies.

Summer Heat Products

Forecast Today Tomorrow Day 3
Heat Risk Low Low Low
Air Quality (O3) Moderate Moderate Moderate

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