Severe weather including golf-ball sized hail, dangerous cloud-to-ground lightning and 70 mph winds are forecast for the Denver metro area and the Eastern Plains on Monday, according to meteorologists.

The National Weather Service in Boulder warned residents to be “weather ready,” on Monday. Although hail can damage cars, meteorologist Kyle Fredin said that the biggest threat to people is lightning.

“You have camps for kids and baseball games and swimming pools. Lightning is always the most dangerous,” Fredin said Monday afternoon.

Window-shattering hail could fall as early as 3 p.m. when thunderstorms move over the Denver metro area, according to the National Weather Service in Boulder. The chance for thunderstorms and severe weather increases from 30 to about 50 percent in the evening, meteorologists says.

The largest hail – golf-ball sized – is expected east of Greeley on the Eastern Plains, Fredin said. Tornadoes are possible. In Denver, one-inch hail is the most likely, he said. People should also be wary of localized flooding, he said.

Be weather-ready today with a few severe thunderstorms possible. Cooler afternoon temperatures with thunderstorms expected east of the Conti pic.twitter.com/KAsqj2zLAd — NWS Boulder (@NWSBoulder) August 6, 2018

Denverites could get another round of rain and thunderstorms on Tuesday, when the high temperature could reach 84 degrees.

The chance for rain and thunderstorms decreases on Wednesday.

A period of sunny weather is expected from Thursday and through the weekend, forecasters say. High temperatures will be in the mid-to- upper 80s.