Windows in Sioux Falls whistle on the windward wall and leak when thunderstorm rain is blown into the head. Edge houses with little shelter show it first, as dust on the sill and a sash that no longer meets. Older windows nearer the river and the cathedral streets are often wood, sometimes with a storm panel, set in brick that does not forgive a sloppy flange. The gust is the same. The wall it hits is not.
Feel the frame before you replace the glass. A whistle with intact glass may be weatherstrip, a meeting rail, or a sash that racked. Fog between panes is a failed seal. Water stains on the trim below a window are a flashing problem, not a blind problem. Insert replacement leaves the old frame. Full-frame work opens the hole. Soft wood or a frame out of square means the old frame should not stay. Sound wood means you should not tear the wall apart for sport.
New construction on the open edges sometimes leaks at the flange because the wrap was never lapped for sideways rain. Ask how the sill is flashed and what fills the gap. A new unit on a rotten sill repeats the stain. Wind stacks on west and north walls and finds any gap the latch cannot close. Do not buy a whole-house story because one bedroom howls. Count the bad openings and note which elevation faces the fetch.
If a claim is open, photograph the windward glass, the stained trim, and the screens that blew out before they go in the trash. The quiet side of the house is a comparison. Paint bubbles a month later are the path the rain already walked. Say whether the frames feel soft. Brick openings in the older part of town punish a unit that is shimmed casually and then left for the next gust.
Say how many windows, which rooms, and whether this is a whistle, a leak, or broken glass. Name the part of Sioux Falls. Have the deductible ready if the policy is involved. The wind does not need a storm warning to work a tired sash. Call the number on this page.