title: NSString Containing the Temperature for todays weather
body: <p>I'm trying to detect if the temperature is in-between two sets of numbers. i.e. 70 - 79
  If its in that range, perform an action, in my case set a specific image. I've tried using <code>rangeOfString:</code> but it was only looking for a number anywhere. I need it to look inside of a 10 digit area like 70 - 79.</p>
  
  <p>Here is what I have for the temperature code</p>
  
  <p><code>NSString *temperature = [NSString stringWithFormat:@"%d", weather.temperature];</code></p>
  
  <p>How would I take the string and search in-between 0-9, 10-19, 20-29...60-69, 70-79 etc etc etc?</p>
  
  <p>If anyone can point me to an apple document or something I would greatly appreciate it.</p>
  
  <p>Thanks</p>