When flying from Auckland to Grand Rapids, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
The rainfall in Auckland is generally more than the rainfall in Grand Rapids. This will continue over the next 8 days.
Expect the weather to be around 29 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Grand Rapids is generally hotter than in Auckland.