Election Day forecast: Heavy rain, snow, record heat could impact voters

As millions of Americans head to the polls, thunderstorms are forecast from the Great Lakes to the Gulf Coast, with the potential to cause inconveniences to voters across the country.

The heaviest concentration of rain is expected in Wisconsin, Louisiana, eastern Texas and Arkansas but heavy rain along the Mississippi River and Ohio River valleys could bring flash flooding and approximately 2 to 4 inches of rain between Louisiana and southern Indiana.

Meanwhile, heavy snow is forecast in the Rockies from Montana down to Colorado and winter weather alerts have been issued in those regions.

In California, strong winds and dry conditions will create a threat for wildfires from the San Francisco Bay area down to Los Angeles where a red flag warning has been issued.

Much of the eastern half of the U.S. is seeing unseasonably warm temperatures on Election Day.

Temperatures are 10 to 25 degrees above normal, with record highs possible in cities such as Nashville, Tennessee; Louisville, Kentucky; Indianapolis; Detroit; and Pittsburgh.