Dangerously hot and humid conditions are expected Wednesday through Friday.

A heat wave will settle in beginning tomorrow. Heat indices of 100 to 110 degrees are possible starting Wednesday afternoon through Friday afternoon. Overnight lows will remain in the mid to upper 70s, and possibly lower 80s in the Twin Cities metro. Offering little relief from the heat for those without air conditioning.

This combination of very hot daytime conditions with very warm overnight lows will result in very dangerous heat conditions. Those without access to air conditioning or working outside Wednesday through Friday should use extreme caution, stay hydrated, and seek relief in air conditioned locations if possible.

Excessive Heat Warning remains in effect from 1 PM Wednesday to 7 PM CDT Friday.

Temperatures: highs in the mid 90s and lows in the mid 70s. To possibly lower 80s in the Twin Cities metro area.
Dew points: 75 to 80 degrees, locally higher.
Heat indices: widespread 100 to 110 degrees, locally higher.
Impacts: A heightened risk of heat related illness. Especially for those active outdoors or for those without air conditioning.

Tips for staying cool:

Drink plenty of fluids
If possible stay out of the sun and in an air-conditioned room.
Check up on relatives and neighbors.
Reschedule strenuous activities to early morning or evening.
Know the signs and symptoms of heat exhaustion and heat stroke.
Heat Stroke is an emergency, call 9 1 1.
Young children and pets should never be left unattended in vehicles under any circumstances. Car Interiors can reach lethal temperatures in a matter of minutes.

— Information courtesy of http://www.weather.gov.