First day of summer will be hot in Bay Area

High temperatures for Wednesday and Thursday are forecast to range from 90 to 105 degrees.|

SAN FRANCISCO - The first full day of summer is going to be a hot one in the San Francisco Bay Area.

The National Weather Service has issued an excessive heat warning for the area through Thursday night.

The weather service had previous extended a heat advisory for the region until 9 p.m. Thursday.

High temperatures for Wednesday and Thursday are forecast to range from 90 to 105 degrees across most inland areas with locally hotter temperatures possible.

Overnight cooling will provide some relief but nighttime lows are forecast only to drop into the upper 50s and 60s for most inland areas.

For communities in the thermal belt at higher elevations, expect warmer overnight lows in the lower to mid 70s.

Residents are advised to avoid heavy activity in the heat and not leave children or pets in vehicles.

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