By late afternoon, the tomatoes are in shade, looking healthy but the soil
is somewhat dry. I know it is bad for any plants to be wet overnight

Get some plastic gallon milk jugs. Poke a hole in the bottom of each
one with an ice pick. Place one beside each tomato plant, on the
north side, so as snsot to shade the plant. Bury them slightly-- an
inch or so.

Water your tomatoes by filling each jug with water. The water will go
into the soil where the roots are, and the foliage will not get wet.

An additional advantage is that you will not be watering surface
weeds.

vince norris