Lm35 values capped at 31degree C

Other Hardware Sensors
7

If you want a higher resolution (0.1C) from that LM35 sensor, then add this line to void setup()

analogReference(INTERNAL); // use internal 1.1volt Aref

and replace the two temperature lines in void loop() with this line

temperature = ((analogRead(lm35_pin) * 0.1039)); // calibrate by changing the last digit(s) of "0.1039"

Then you can print the temperature with one decimal place.

lcd.print(temperature, 1);

Assuming you have declared temperature as a float.
Leo..