N_S_R, I don’t know if stores carry ice melt around here, but it’s branded as Damprid (and others) when it’s used as a desiccant. There are some other chemical dehumidifiers, too. You might want to toss some up in the attic to help things dry out. (They collect the water in a container, so ease of removal is a consideration.)

Forecast says my neighborhood should hit the 70s this weekend. Fingers crossed. We’ve got a leaky window, too…