When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Aberdeen is roughly less than Eugene. You can assume this to be the case over the next 24 days.
You can imagine temperatures to be in the 29 °C range in July. The weather in Eugene is generally hotter than Aberdeen's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.