When it rains, rain falls in the house has a roof.
Edit By Crinrict: Adjusted Title to fit archived thread, Added tag.
Archived thread had around 187 me toos
Ideas
It's snowing inside an apartment in San Myshuno. The residents have the "Central Heating" buff but they are also all wearing their cold weather clothing and have the "talk about freezing temperature" option under "Small Talk".