Only one weather event will happen per season so as to allow clans to recover.

Newleaf
- Chances of miscarriage are 10% lower.
- Chances of death when giving birth are 5% lower.
- Chances of stillborn kits are 5% lower.
- 10% higher chance of large litters.
- 10% higher chance of healthy kits.
- 40% chance of flooding each moon.
- 60% chance of hay fever each moon.

Greenleaf
- 40% chance of a heatwave each moon.
- 10% chance of a drought each moon.
- 20% chance of a storm each moon.
- Double the chances of finding rare and super-rare herbs.
- +20% hunting skill to each cat.

Leaffall
- 40% chance of a storm each moon.
- 10% chance of disease.
- +10% hunting skill to each cat.

Leafbare
- 50% chance of disease.
- -50% hunting skill.
- 10% higher chance of stillborn and unhealthy kits.
- 10% higher chance of miscarriage.
- 10% lower chance of large litters.

Flooding
- Likely to lose prey, herbs and sticks.
- Chance of dying...
Battle skill:
1-> 90%
2-> 80%
3-> 70%
4-> 60%
5-> 50%
6-> 40%
7-> 30%
8-> 25%
9-> 20%
10-> 15%
11-> 10%
12-> 8%
13- 5%
14- 3%
15- 1%
- Cats can save others by using the command: /Have (cat) save (cat).
This will increase the chances of the hero dying by 10%, but the cat they save's chances of living will become the same as their's. (E.g., if a cat with level 10 battle saved a kit with level 1 battle, the cats chance of death would increase to 25%, but the kit's would decrease to 25% at the same time.

Hay fever
- 50% chance that each cat will have it.
- -20% battle and hunting skill.

Storms
- 5% chance per cat of being struck by lightning.
- 10% chance of survival when struck (except elders and kits, who will die inevitably).
- 20% chance of flooding.
- 10% chance of a wildfire.
- 10% chance of each resource being struck by lighting (meaning you will lose all of that resource).

Heatwaves
- 50% chance of killing elders and kits.
- 20% chance of dying per cat.
- 20% chance of causing a drought.
- -20% battle and hunting skill.

Droughts
- 20% chance of killing each cat.
- 40% chance of killing elders and kits.
- -20% hunting skill.

Disease
- 50% chance of being whitecough.
- 30% chance of being greencough.
- 20% chance of being redcough.
- Whitecough will become greencough if not treated in the first moon.
- Greencough will kill any cats who still have it after a moon.
- Redcough will kill any cats who still have it after a moon. It will kill kits and elders immediately.
-The rarer the disease, the lower the chance of successful treatment.
- Whitecough costs 2 herbs to treat.
- Greencough costs 5 herbs to treat.
- Redcough costs 8 herbs to treat.