NASCAR Weather Report Chicago: Rain Falling on Sunday Afternoon

What a weekend of NASCAR weather in Chicago so far.

To start, the XFINITY Series race was postponed due to lightning on Saturday, only to face the same weather issues again on Sunday.

In an unprecedented move, NASCAR declared the XFINITY Series race as official on Sunday without running a single lap even though the event had yet to get to halfway.

Now it's the Cup Series turn to take on the NASCAR weather forecast for Chicago.

So let's go ahead and check out the latest NASCAR weather report for Sunday, including how rain will affect today's Grand Park 220.

NASCAR Weather Report Chicago

According to the National Weather Service, showers are likely in Chicago on Sunday.

The NASCAR weather forecast shows a 70% chance of rain today, including a chance of rain and thunderstorms after 3 p.m.

However, a later start for today's Grant Park 220 could help NASCAR avoid the rain.

The hourly breakdown shows a 33% chance at 5 p.m. ET, which then drops to just 14% three hours later.

This suggests that the rain could hit Chicago early in the afternoon before potentially clearing out for today's race.

And even if the course is wet and or it's still raining at the start of the Grant Park 220, NASCAR still has the option to use rain tires until the street's surface is dry enough to switch over to slick tires.

With that said, Chicago weather is notoriously unpredictable, so it'll be important to monitor the forecast throughout the day on Sunday and even during today's race.

Based on live NASCAR odds for Chicago, Tyler Reddick is the race favorite at +400, followed by Denny Hamlin (+500), Martin Truex Jr. (+700), Shane van Gisbergen (+800), Christopher Bell (+1000) and Daniel Suarez (+1000) via bet365.