Here is a time lapse video of weather conditions at Monument Park in South Plainfield on August 22, 2013. On this day, threatening skies were all around and eventually, the skies opened up with an afternoon downpour. Rainfall amounts at GWC totaled 0.89 for the day. Thunderstorms brought 0.15 inches of rain in the morning, and then the rest came in the downpour after lunch.