Weather events occur occasionally throughout the city. Examples are:
Rain - Washes away smellrot disabling some tracking, will help put out building fires
Snow - ??
Mist - Disables seeing creatures on adjacent map tiles, only on the same map tile the character is on. Commonly encountered in the Underground Mall and in the secret area underneath the Hell House.
Green Spores - Prevent hiding and also the special senses of vampires and zombies [Blood], Smell Rot and the vampirc Sensory Skills tree. Green spores affect an entire suburb for a few days and then move on to a different suburb. In the Underground Mall, spores disable mist.
Red Spores - Prevent hiding, but not special senses. Red spores affect an entire suburb for a few days and then move on to a different suburb. In the Underground Mall, spores disable mist.