I'm interested in the same thing and from the small amount of research I did a few months ago it seems most people are going with a standard indoor temp / humidity sensor and placing under cover. They also were saying that the performance isn't as good as a true weather station. Hopefully someone with more experience will chime in.
Outdoor Temperature Sensor
I’d like to get an outdoor Temperature Sensor that can be used with HA and Google Home. Anyone have any recommendations?