Seasonality Core turns your Mac into an advanced home weather station, showing you the latest forecast, observations, and maps for locations worldwide. Our back-end collects and processes data from around the globe. From weather station observations to forecast model data and advanced imagery, we have all your data needs covered.The custom graphing code in Seasonality Core provides a pleasant view of weather observations you won't find anywhere else. Seasonality Core can download up to four days worth of past data, and continues to save data on your Mac as long as it is running. This allows you to watch the weather change from season to season and from year to year.