Well, same problem with millis() function as blink without delay sketch.... Updates LCD just fine every second but clears the characters....
EDIT:I'm a noob that's what happening hahahaha! I had an lcd.clear() in the void loop. The same thing is happening with every different way of doing it. Ends up being extra characters on the display after output to lcd is < 100. Say old temp was 118 and next temp was 88. Display shows 888. Its hard being a noob lolol.
I used my original code and got rid of the lcd.clear() in the void loops and it acts exactly like it did with all the other tries after removing it(lcd.clear).
Any ideas?