Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Yosemite National Park to Paraguay as you normally would.
In terms of precipitation, rainfall in Paraguay ranges from 1.6 - 5.5 inches per month. January is typically the wettest month, when rainfall can reach 5.5 in. August is typically the driest time to visit Paraguay when rainfall is around 1.6 in.
If weather is an important factor for your trip to Paraguay, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 64.4 F).