I wouldn't do that, Rex. It's still daytime & hot. When we moved in to our new house in 2007 our programmer was already set for Wed night/Thurs morning at 2:30. Every house on the street had a day to water based on their address. After reading the Univ of Fl extension news online, I changed to 4:30am for awhile then compromised at 3:30. I don't know why they came out with this new watering schedule but it goes against all the literature.