What a difference a cold front makes.

Denver is forecast for chilly summer weather Thursday with highs in the lower 70s, according to the National Weather Service in Boulder.

There’s a 60% chance of showers, likely to begin after 3 p.m. Expect cloudy skies and a high of 71 degrees.

“It will be much cooler today with light rain showers and low clouds,” the NWS said. “Isolated to scattered thunderstorms will be possible mainly west of the Continental Divide and south of Interstate 70. Small hail, heavy rain, and wind gusts to 40 mph will be possible under these storms. To the north of I-70, chances for thunderstorms will be low, but can`t be ruled out.”

Looking ahead to Thursday night, a 60% chance of showers continues through midnight and into Friday morning. Expect cloudy skies and a low of 57 degrees.

Similar conditions are expected to linger through Friday and into the weekend with highs jumping back into the 80s Saturday.

Here’s the 4-day forecast from the National Weather Service.

Friday: There’s a 60% chance of showers and thunderstorms in the forecast between noon and 3 p.m. Expect mostly cloudy conditions and a high of 75 degrees.

Saturday: There’s a 40% chance of showers and thunderstorms after noon. Expect partly sunny skies and a high of 85 degrees.

Sunday: There’s a 40% chance of showers and thunderstorms after noon. Expect partly sunny skies and a high of 88 degrees.

Monday: There’s a slight chance of showers and thunderstorms in the forecast afternoon. Expect mostly cloudy skies and a high of 87 degrees.