CTP botched the coop reports for lows. They used the at ob temps instead of actual lows. As an example, I reported -2 for low and -1 for my 7a ob. Kane shows up as -17 but actually reported -20 as their low. Not a super big deal, but it does make a difference.
https://forecast.weather.gov/product.php?site=NWS&issuedby=CTP&product=HYD