The National Weather Service?s website, Weather.gov, publishes information regarding rainfall totals for the previous 24 hours. For local rainfall totals, enter a city in the search bar, and navigate to the Climate and Past Weather link to find the 24-hour summary.
The 24-hour Precipitation Summary shows the short-term observed precipitation for the lower 48 states in the United States and Puerto Rico. The observation period ends at 1200 Greenwich Mean Time or 7 a.m. Eastern Standard Time. The NWS updates the analysis six times per day. However, daily rainfall totals for the entire United States are usually available by 12:30 p.m. EST each day.