Do you want to input temperature in Fahrenheit (F) or Celsius (C)?
F
Enter a value in Fahrenheit for temperature (-80F - 121F inclusive): 
-20
You entered -20 degrees Fahrenheit.
Enter a speed for the wind in MPH (0 - 231, inclusive): 
30
You entered 30 miles per hour.
For -20 degrees F and 30 mph the wind chill is: -53.0284