You probably want to use a question mark rather than a character class with the hyphen. 

  if ( $info =~ /(hi|lo)\s+-?\d{1,3}°F/i ) {
    # whatever
  }

If you want to capture the actual temperature, you're going to need to put parens around \d{1,3}

Originally posted as a Categorized Answer.

In reply to Re: How to set a delimiter. by eg
in thread How to set a delimiter. by damian1301

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