Sub-zero temperatures are hitting Iowa right before Monday's high-stakes caucuses. Subscribe: https://www.youtube.com/user/WVECTV/?sub_confirmation=1 Download the 13News Now App: http://bit.ly/13NewsNowApp Check out our website: https://www.13newsnow.com/ Like us on Facebook: https://www.facebook.com/13NewsNow/ Follow us on Twitter: https://twitter.com/13newsnow Follow us on Instagram: https://www.instagram.com/13newsnow/