Weather was introduced in The Sims 2 Expansion Pack Seasons. There are four seasons including Winter, Spring, Summer, and Autumn/Fall. The weather can be set within each neighborhood to a type of climate. Regularly each season has four sim days in it, however if a neighborhood is specialized in Winter, for example, there will be eight sim days in Winter and Fall. Sims mood can also change with the weather.
Winter
See main page Winter
During the winter, it may snow or even hail down onto a Residential lot, covering everything outside with snow. Sims are able to freeze or catch a cold if left out in the snow too long. A child, toddler, or baby sim may be taken away by the Social Worker after they become too cold. The player will receive a warning before this happens though. Sims are also able to have snowball fights, make snow angels, and build snowmen. Toddlers can also play in the snow and dogs can eat the snow (Requires Pets). On some days, if the snow is too heavy, Sim children or teenagers that attend school may be able to have a "snow day." Also, if you are wanting to grow plants, don't bother because they won't grow during the Winter unless the lot has a green house. Sims will automatically change into seasonal wear.
A side note, if your Sim's home doesn't have a roof you will definitely notice, as it will start snowing inside! Sims will be affected by the cold temperature, if this happens.
Spring
See main page Spring
During the Spring, it may rain, snow a little, and finally have sunshine. Sims are able to splash in puddles, grow plants (it is still cold so beware!), harvest fruits, and much more! The Sims will still change into their Seasonal clothing though.
- Note: If you have Seasons and Apartment Life installed, the Palace of Neverending Light will constantly be in Spring.
Summer
See main page Summer
During the Summer, Sims may be able to build relationships quicker and easier. Sims can have water balloon fights or splash in the pool. There is a chance of catching heatstroke if your Sim is overheated. Again, a child, toddler, or baby sim may be taken away by the Social Worker if this happens.
Autumn/Fall
See main page Autumn/Fall
During the fall, the temperature begins to drop and it may begin to snow or rain. During this time, Sims are able to maximize their skills easier and faster than the other seasons. Leaves begin to fall, and of course Sims are able to rake them. After raking them, Sims may jump into the pile of leaves and play with them or even burn the leaves. Sims also begin to change back into Outerwear once outside at the end of Autumn. With this comes along a chance of catching a cold, but not freezing to death.
- Note: If you have Seasons and Apartment Life installed, the Fortress of Eternal Darkness will constantly be in Autumn/Fall.