Churchill Downs will see overcast skies with rain showers. Temperatures will be in the mid-60s with winds blowing between 5-15 mph.
At 5:00 p.m. ET, roughly 85 minutes before the race, the forecast calls for nine mph winds going south with showers.
No horse has an edge in the sloppy conditions. All 19 horses are inexperienced on muddy tracks, according to UPI.
"It'll make the Derby much more wide open," said Frac Daddy and Java's War trainer Kenny McPeek. "How they handle it and what kind of trips they get are completely out of our control."
Normandy Invasion trainer Chad Brown said he doesn't train his horses on wet tracks.
"I don't know if you can teach them to like it. We're going to find out with them," Brown said to UPI.
Golden Soul's trainer, Dallas Stewart, says that his horse is "out of a Mr. Prospector mare and they love the mud."
Here's the odds for the race:
Normandy Invasion +1,000
Java's War +1,500
Will Take Charge +2,000
Palace Malice +2,200
Frac Daddy +2,500
Lines Of Battle +3,000
Golden Soul +4,500
Falling Sky +5,000
Black Onyx has been scratched from the race due to a bone chip in his front left ankle.
All lines courtesy of TopBet.eu