Driver Hints
About the weather
As far as I was able to find out, there are 7 different types of weather conditions. Behind each type you'll find the cities in which they function. Just add the type you want in the mission-script after DamageBarId and FelonyBarId.
DAWN (Miami, Frisco,NewYork, Newcastle)
NIGHT (All cities)
DUSK (Miami, Frisco, NewYork, Newcastle)
RAINING (All cities)
LIGHTNING (All cities)
SNOWING (New York only)
FOGGY (none)
"foggy" is a valid weather-condition, but I just don't seem to succeed in getting it in a mission-script. It can only be included when dept-cueing of smoke is fixed in fogging.