At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Norwich and Grand Forks for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
When travelling, we recommend packing in preparation to handle common weather conditions. The rainfall in Norwich is typically similar to Grand Forks. We can gather that this will continue over the next 20 days.
You can imagine temperatures to be in the 29 °C range in July. The weather in Grand Forks is generally hotter than Norwich's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.