My First Control Structure in Java

Here is my first original program, written after 5 days of learning java. The goal was to include a looping control structure with decision making paths (if/else).
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import java.util.Scanner;

public class AverageTemp 
{
//Calculates the average temperature of weekdays in centigrade 

public static void main(String[] args) 
{
Scanner keyboard = new Scanner (System.in);

double monday, tuesday, wednesday,thursday,friday;
char option;

//User input for five weekdays
do
{
System.out.println ("What was the average temperature on Monday?:");
monday = keyboard.nextDouble();
System.out.println ("What was the average temperature on Tuesday?:");
tuesday = keyboard.nextDouble();
 System.out.println ("What was the average temperature on Wednesday?:");
wednesday = keyboard.nextDouble();
System.out.println ("What was the average temperature on Thursday?:");
thursday = keyboard.nextDouble();
System.out.println ("What was the average temperature on Friday?:");
friday = keyboard.nextDouble();

double average = (monday + tuesday + wednesday + thursday + friday)/5;

System.out.println ("The average temperature this week was: " + average);

//Decision Tree comments on temperature

if (average >= 38)
{ System.out.println("Wow, that is hot!");
}

else if (average <= -10)
{ System.out.println ("Brrr!");
}

else 
{ System.out.println ("That's all right.");
}
//option to continue or end program

System.out.println ("Enter Y to continue or N to quit: ");
option = keyboard.next().charAt(0);
} 
while (option == 'Y' || option == 'y');

}
}