the LM35 output is 10mV per degree C. You are displaying the raw value you read, and not converting it first.
int Temp = analogRead(SensorPin);
should be something like:
int Temp = analogRead(SensorPin) * 500 / 1024;
int Temp = (analogRead(SensorPin) * 900 / 1024 ) + 32;
That is a rearrangement of * 5 / 1024 * 100 and (* 9 / 5) + 32
* 5 / 1024 gives the actual voltage on the pin.
* 100 converts that to the number of 10 mV steps
(* 9 / 5) + 32 converts C to F if desired
Note: as wired, you cannot measure less than 0c
Note: change 5 in the above formulas if the arduino is changed from running at 5v.