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A strong area of low pressure is funneling moisture up from the Gulf Of Mexico and into southern Arizona today. Some areas could receive heavy rain, others dust storms. But thunderstorm activity could be diminished, because of the unseasonably cool temperatures coming in. In fact, if the forecast high of 88 holds, it would set a record for the coolest Independence Day ever.

J.J. Brost, Science and Operations Officer with the National Weather Service in Tucson says 88 isn't hot enough to promote thunderstorms growth. Drizzle is a possibility Tuesday night and Wednesday morning.

Brost says the moisture is moving through pretty quickly, and the rain should be over in time for fireworks.