? for the garden gurus

[DCAMama]

We're going to be in the upper 90s the rest of the week from the sounds of it and it's very unusual for here (we usually only get to about the upper 80s in the summer with maybe a could days in the mid 90s). When would be a better time to water my garden, since it's going to need it just about every day this week, I think, early in the am (like around 6) or later in the evening (like 10 or so)? If it makes any difference, sunrise is at like 5:30 and sunset is at like 9:30 or so.