Is “Thundershower” a Scrabble word?
Yes
THUNDERSHOWER
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Thundershower
noun
1.A rain shower accompanied by thunder and lightning.
“The thundershower poured down on us as we ran home, but returned to a drizzle after several minutes.”