Help with python's beautiful soup / HTML question

Hi all, I'm trying pull the value '52' out of this HTML code, but I can't seem to get the bs4 selector right. Due to the format of the website I need to specify the div class name 'hi-low' and then further specify a span class name 'hi'. This is what I've come up with so far. The first print() call prints out a string with the correct info in it. I just can't get the '52' value

My code:

import bs4
import requests

res = requests.get('https://wunderground.com/weather/us/md/baltimore')
res.raise_for_status()
w_u_soup = bs4.BeautifulSoup(res.text, "html.parser")
hi_lo_div = w_u_soup.find('div', class_='hi-lo')
print(hi_lo_div)
for element in hi_lo_div.select('span .hi'):
    print(element.getText())

This is the only output I get <div _ngcontent-c21="" class="hi-lo"><span _ngcontent-c21="" class="hi">52°</span> <span _ngcontent-c21="" class="separator">|</span> <span _ngcontent-c21="" class="lo">30°</span></div>