The Rainout Number for the Chesterfield Valley Athletic Complex is 636-537-4770 x1 x1. Field conditions on this recording are updated by the city of chesterfield by 3pm on weekdays or at least 1 hour before games on weekends. You can also go to www.chesterfield.mo.us - and select the icon for field status. The city will close the complex when temperature is 45 degrees OR windchill is 40 degrees.