The first three days of the Ann Arbor Art Fair have seen oppressive heat, high humidity and a passing rainstorm. As the final day of the event dawns, there could be a taste of all three.

The forecast calls for highs temperatures nearing 90. It's expected to be humid again, and there's a 40 percent chance of rain—but primarily after the fair closes at 6 p.m.

The heat index today is forecast to be around 95. Winds will be light.

Rain remains possible overnight tonight and into tomorrow. Sunday is also expected to be hot, but Monday's high temperature is currently forecast for the low 80s.

For more, see AnnArbor.com's weather page.