Windy : Mundane projectiles deviate depending on wind speed and direction. Flight is hampered depending on wind speed and direction.
Rain : While it is raining, you cannot faint from thirst. Vision is slightly impaired. Can hide yourself inside clouds.
Heavy Rain : "Windy" + "Rain" + Cannot run around on the ground without sliding. You become tired a little easier. You can become ill if you stay out in the rain for too long. Vision is very impaired.
Thunderstorm : "Heavy Rain" + Flying is not suggested, getting cover is. Chances of getting struck by lightning increase depending on the terrain.
Chill : You become tired easier. Your concentration has a lower maximum, especially if you're not wearing warm clothing.
Snow : "Chill" + Running speed is hampered. Your stamina has a lower maximum, especially if you aren't wearing very warm clothing. Can hide yourself inside clouds.
Snowstorm : "Snow" + Running speed is very hampered. You stand a high chance of dying from exposure if you aren't wearing very warm clothing. Vision is extremely hindered. You become tired even easier. Falling asleep in a snowstorm causes you to die from exposure.
Hot : Thirst drains faster depending on how hot it is. Stamina drains depending on how hot it is.
Fog : Vision is impaired depending on how thick it is.
Tornado: Flight is near impossible, or very difficult depending severity and distance from the storm. Caravan travel is suicidal. Run!
Hurricane: Like a tornado, but on the sea. Boat and ship travel are suicidal.
Quake: Flying is suggested, running becomes harder, it is suggested to hide in a sturdy building.
Dust Storm: Like a tornado, but much wider and non-cyclical. Chance of blindness and suffocation.