It used to be that the official start is when there were three days in a row of a 54 degree or higher dewpoint. It has changed in recent years to be from June 15 through September 30.
This is the first year that it has actually stormed on the first calendar day of monsoon season. We got a few thunderstorms in the Tucson area.
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| Storm clouds on the first day of monsoon season in Tucson. This is looking southeast from my patio balcony at Ridgepointe. |
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| A brave Ridgepointe employee walks on damp sidewalks after it rained. |