GC's weather is always in flux. Expect snow on the ground but not a lot of snow storms. But if that snow comes, it could be a road closing event. Rain is also likely. Because the weather is so unpredictable, plan for everything and hope for nothing.
Remember, just this year there was snow falling on Memorial Day at the GC. Not enough to close the park, but enough to make one realize the weather at GC is way to unpredictable during the spring and fall transition periods. April 2018 was equally as weird with one day being in the 70's and the next dropped to the low 40's.
1994 Itasca SunDancer 21RB - Chevy G-30 chassis.