Which books take down lines when the weather is bad?

[BetWeather]

Hi Guys,
Interested in Rain, Snow and Wind.

Why does the Totals line only drop a couple points for bad weather when it
seems obvious that the passing game will suffer.

Is it because the "books" are already balanced and weather bettors are an insignificant
market share ?

Does your book take down Totals line (just) before game time when the weather
is bad ? If so how long before?

[tofuman]

most books take down lines when the game is called off due to weather and has not passed 5 innings