PHOENIX (AZFamily) — A weather pattern change is underway across Arizona. Look for the warmest days this week both today and tomorrow with afternoon highs in the Valley near 106 degrees. That’s about three degrees above normal for this time of year in Phoenix.

A trough of low pressure off the coast of the Pacific Northwest is helping to amplify a ridge of high pressure over the Southwest. Temperatures will remain fairly warm today and tomorrow across Arizona because of that.

By late Wednesday, the trough begins to move across the Great Basin, which will gradually lower temperatures for Arizona. Look for afternoon highs in the upper 90s in the Valley by Friday and Saturday. The trough will also drive breezy conditions in the Valley with windier conditions in the high country.

Look for w

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