Tracking heat and humidity for the first day of summer

TODAY: Highs will breach 90 degrees for the first time this year, with dew points in the 70s. This will yield a heat index value near 100.

TONIGHT: Temperatures remain very warm overnight in the mid-70s as skies stay clear.

EXTENDED: Heat and humidity persist through the weekend with lots of sunshine. We expect highs in the 90s and heat index values in the low 100s. As this heat stretches into next week, take care not only during the day, but also overnight with warm lows in the 70s. A few clouds and limited rain chances pop up midweek, but the heat sticks around as the heat index flirts with triple digits.