Yes you can run 2 temp probes from the same circuit.
Use the outlet you have programed for the sump light and use that to assign the light to a timer to turn it on and a second timer to turn it off.
Here's how I have mine just on the opposite schedule of what you want.
Use the outlet you have programed for the sump light and use that to assign the light to a timer to turn it on and a second timer to turn it off.
Here's how I have mine just on the opposite schedule of what you want.