National Weather Service hydrologist Mike Callahan says light rain is possible in Louisville – just enough to make the Churchill Downs infield muddy Saturday. Callahan says the first batch of rain could reach Louisville by late morning, with scattered showers in the afternoon.

With the Kentucky Derby 2011 post time being 6:24 EST, it looks like the odds of rain are that of a coin toss.
1 pm
* Temp: 66° F
* Chance of Rain: 60%

2 pm
* Temp: 66° F
* Chance of Rain: 35%

3 pm
* Temp: 66° F
* Chance of Rain: 15%

4 pm
* Temp: 67° F
* Chance of Rain: 60%

5 pm
* Temp: 67° F
* Chance of Rain: 50%

6 pm
* Temp: 67° F
* Chance of Rain: 50%