Precipitation is a phenomenon that occurs as a part of normal weather changes. This feature is introduced in The Sims 2: Seasons and The Sims Castaway Stories. Unlike the real world, precipitation in the Sims' universe is essentially a random event; while Sims can get weather forecasts by reading the newspaper or watching the weather station on TV, they are not notably useful for predicting precipitation. There are three kinds of natural precipitation (rain, hail, and snow), and an artificial one (rain of fire). Each of the natural precipitation types may occur early in the following or preceding season, not only the current one. Thus, heavy snow may occur on the first day of Spring if Winter was just over, and a heavy snowfall occurring when Winter changes to Spring will continue. Of course, it will not snow in the middle of the Summer.
Precipitation can be described by its type, intensity, accumulation, and duration. All of these depend on the season. The type, as described above, is the kind of precipitation, whether it's rain, hail, or snow. The intensity determines how heavy the precipitation is. For example, hail may or may not be heavy enough to damage crops and injure Sims, snow may occur in light flurries or in a heavy snowfall that eventually covers the ground, and rain may fall in showers or in a thunderstorm. The duration is random.
Each season also brings different chances of daily precipitation:
- Spring: 30% daily chance
- Summer: 20% daily chance
- Fall: 15% daily chance
- Winter: 50% daily chance
Additionally, precipitation will neither occur nor stop if Tempus Interruptus spell is cast by a witch[TS2:AL]. Precipitation, as well as the current season, can be controlled by weather-controlling machines. Some Sims usually want or fear to see certain precipitation types.[TS2]
- Seasons: Spring (30%), Summer (10%), Fall (15%)
- Intensities: Light, heavy, torrential
- Accumulation Levels: Puddles
Sims are more likely to do indoor activities while it is raining. Rain also satisfies a PlantSim’s Water need and revives Sims who suffer from heatstroke. Servos are rain-resistant, though they can get short-circuited when splashing in the puddles. Cats don’t seem to be afraid of rain. Rain can be made by Evil Witches’ spell Corruptus Locus, while it can be stopped by Good Witches’ spell Beautificus Locus.
In The Sims 3: Seasons, rain occurs more in Spring. When Sims stay outside rain for too long, they'll get a moodlet "Soaked" which is -30 to the mood, but +30 if the sim is mermaid[TS3:IP]. Sim can use an umbrella to prevent this. Simbot goes outside the rain will get Short Out moodlet and stop functioning[TS3:A], but a Plumbot is water-resistant and won't become Short Out [TS3:ITF].
Rain never stops in the Fortress of Eternal Darkness.
Rain puddlesEditRain puddles begin to appear after it has been raining for a while. This kind of puddle is different from regular puddles, in that Sims can splash in the puddles for fun. Rain puddles can be mopped up, but generally do not have to be, as they will evaporate on their own after the rain has stopped. Indoor rain puddles still need to be mopped.
Rain puddles and normal puddles can be easily distinguished by their colors — rain puddles are paler in color and will not mix with other puddles even if they're adjacent to each other. Only rain puddles can evaporate.
How quickly the rain puddles form depends on the intensity of the rain. Thus, the heavier the rain is, the sooner rain puddles appear.
- Distant Strike. This lightning strikes beyond the lot. It causes thunder, and sometimes causes a flash, but does not affect the current lot. The apparent distance from the lot may vary.
- Local Strike. Local lightning strikes something in the lot, either objects or Sims. An actual lightning bolt can be seen striking in the lot, in addition to a big flash in the sky and heavy thunder sound.
Local lightning strikes can be dangerous, causing fire, mayhem, and even death. Lightning strikes random objects, but some objects are more likely to get struck.
- Trees. Most trees other than orchard trees can get struck by lightning.
- Lightning Rod. The EZ120v Lightning Finial is a functional roof object, that can be used as a decoration and a lightning strike prevention. Unlike real-world lightning rods, it is also effective if placed on the ground.
- Large Objects. The larger the object, the more likely it is to get hit.
- Pools and Hot Tubs. Sims who are in a pool or hot tub are the frequent targets of lightning strikes. The difference is, only one Sim gets struck in the hot tub, while all Sims in the same pool get electrocuted. When your sims get struck, drowning animation will play.
Most of the time, fires caused by lightning strikes are extinguished immediately by the rainfall, but in rare situations, the rain stops after the very last lightning strike. In this situation, the fire won't be extinguished. If this happens to a tree, the fire cannot be extinguished, but may disappear if the player saves, exits and reloads the lot. (This appears to be a case of the FX being stuck, rather than the fire itself persisting.)
Lightning in The Sims 3: Seasons occurs like in The Sims 2: Seasons, but it less dangerous than The Sims 2. When lightning strikes Sims, it is treated as death by electrocution. Unlike The Sims 2: Seasons, sims cannot be struck in a hot tub and pool. Lightning in The Sims 3: Seasons also won't cause fire
- Seasons: Summer (10%)
- Intensities: Light and heavy
- Accumulation Levels: Hail on Ground
Hail tends to be briefer than other forms of precipitation, but heavy hail may last long enough to accumulate on the ground and on roofs, though it will not build up as snow does. However, unlike real-world hail, even heavy hail will not damage objects that are outdoors.
Hail is not present as a weather type in The Sims 4: Seasons.
- Seasons: Winter (50%)
- Intensities: Light and heavy
- Accumulation Levels: Snow on Ground
In The Sims 3: Seasons, staying outside when there are snow for too long without outerwear can cause death by freezing.
These activities can mostly be done if there is heavy snow accumulation.
- Sims can have snowball fights with others. This is similar to having water balloon fights.
- Sims can build snowmen alone or together. Snowmen, partial or finished, attract penguins.
- In The Sims 3: Seasons, Sims can build an igloo and two young adult or more older Sims can make WooHoo in it if there is no child or teen inside it.
- Sims can create snow angels on the ground.
- If heavy snow falls until morning, there is a chance that school will be canceled for a snow day. Children and teens react to it according to their personality (Cheer/Sigh).[TS2S][TS3S]
- Toddlers can play in snow.
- Toddlers and dogs can eat snow.
- Some interactions are disabled outdoors, i.e. Hanging Out, Stargazing, Working Out, Yoga, and Jumping Rope.
- Snow can damage the quality of crops. But in The Sims 3: Seasons, crops will become dormant in Winter, thus makes them unable to be damaged by snow