Save seed + game hour Front curve cloud · rain chance · fog wind · temperature Forecast Cloud Nine · the paper Roll per period SimRandom(seed, period) Actual weather rains, or doesn't Sky & rain Weather.cs, game clock Lawn wetness load · clumps · bag Soil moisture growth → bookings Every sibling computes this. Only the clock is synced (already). hourly shown same % players plan with it

Two rolls, one chance: the forecast and the truth come from the same number, which is why the percentage can be trusted.