In 2020, there is always something unique and exciting happening at Valleyfair with our many Seasons of Fun events. Valleyfair kicks off the year with the return of Peanuts Celebration in June, and then we kick up our heels at Grand Carnivale in the heat of July. Monster Jam Thunder Alley™ roars into Valleyfair in August, and then the fun takes a terrifying turn as the temperatures drop while the park transforms into ValleySCARE this fall.