The current weather window switches Tonight to Today, and Tomorrow to Tonight correctly at midnight. However, it shows N/A for High under Today. It’s the only one that it shows N/A for, all the others (condition, humidity, wind, precipitation, etc.) have values.
Looking more carefully to it, it seems that it displays the values for the previous day. I can confirm this by looking at the daily window. As it is after midnight, today is supposed to be Sunday, but the values displayed are those for Saturday.
The same is happening with the the values under Tonight, which are the ones for Saturday night, instead of Sunday night.