$ ./1.wund_wind.pl 
N5
$ cat 1.wund_wind.pl 
#!/usr/bin/env perl
use 5.016;
use HTML::TreeBuilder;

my $tree = HTML::TreeBuilder->new_from_file('1.weather.html') or die;

my $wind = $tree->look_down(
  _tag => 'div',
  class => qr/^condition-wind /,
);

say $wind->as_trimmed_text( extra_chars => '\xA0' );
$