You could use string manipulation to truncate everything. I'd do it in the convertToLocalTemp function, because you can do it before the degree and Celsius/Fahrenheit symbols are added. I don't have the function to look at, but if you can find it and post it I can probably show you what to edit.
It's possible to do it after the convert function - it just means a few more steps (finding the ".", taking it + one more space to the right, and combining it with the last two characters).