When it rains, rain falls in the house has a roof.
Edit By Crinrict: Adjusted Title, Added tag.
Ideas
This issue is still occurring With mods on and in a vanilla save with no mods. I wish I didn't re-design my roof thinking I screwed it up. My sims get the longing for the indoors de-buff among many other issues and de-buffs, ruining gameplay. Temp fix looks to be shutting off seasons and/or weather which again ruins gameplay we paid for on the x-packs.