One of the essential ways to save on airfare from Washington, D.C. to Hermosillo is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 33% on airfare.
In terms of precipitation, rainfall in Hermosillo ranges from 0.1 - 3.2 inches per month. July is typically the wettest month, when rainfall can reach 3.2 in. April is typically the driest time to visit Hermosillo when rainfall is around 0.1 in.
If weather is an important factor for your trip to Hermosillo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 89.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).