Mine

scn EWSummer1
float fQuestDelayTime
short randval

Begin GameMode
set fQuestDelayTime to 300
ReleaseWeatherOverride
set randVal to 1 + GetRandomPercent * (3-1) / 99
if randVal == 1
if IsCloudy
set randVal to 1 + GetRandomPercent * (7-1) / 99
if randVal == 1
SetWeather EWRainSum1 1
elseif randVal == 2
SetWeather EWRainSum2 1
elseif randVal == 3
SetWeather EWRainSum3 1
elseif randVal == 4
SetWeather EWSumClr1 1
elseif randVal == 5
SetWeather EWSumClr2 1
elseif randVal == 6
SetWeather EWSumClr3 1
elseif randVal == 7
SetWeather EWSumClr4 1
endif
elseif IsPleasant
set randVal to 1 + GetRandomPercent * (5-1) / 99
if randVal == 1
SetWeather EWOvercast1 1
elseif randVal == 2
SetWeather EWOvercast2 1
elseif randVal == 3
SetWeather EWOvercast3 1
elseif randVal == 4
SetWeather EWOvercast4 1
elseif randVal == 5
SetWeather EWOvercast5 1
endif
elseif IsRaining
set randVal to 1 + GetRandomPercent * (12-1) / 99
if randVal == 1
SetWeather EWOvercast1 1
elseif randVal == 2
SetWeather EWOvercast2 1
elseif randVal == 3
SetWeather EWOvercast3 1
elseif randVal == 4
SetWeather EWOvercast4 1
elseif randVal == 5
SetWeather EWOvercast5 1
elseif randVal == 6
SetWeather EWSumClr1 1
elseif randVal == 7
SetWeather EWSumClr2 1
elseif randVal == 8
SetWeather EWSumClr3 1
elseif randVal == 9
SetWeather EWSumClr4 1
elseif randVal == 10
SetWeather EWStormSum1 1
elseif randVal == 11
SetWeather EWStormSum2 1
elseif randVal == 12
SetWeather EWStormSum3 1
endif
else
set randVal to 1 + GetRandomPercent * (10-1) / 99
if randVal == 1
SetWeather EWOvercast1 1
elseif randVal == 2
SetWeather EWOvercast2 1
elseif randVal == 3
SetWeather EWOvercast3 1
elseif randVal == 4
SetWeather EWOvercast4 1
elseif randVal == 5 
SetWeather EWOvercast5 1
elseif randVal == 6
SetWeather EWSumClr1 1
elseif randVal == 7
SetWeather EWSumClr2 1
elseif randVal == 8
SetWeather EWSumClr3 1
elseif randVal == 9
SetWeather EWSumClr4 1
elseif randVal == 10
endif
endif
endif
End