NOAA’s National Weather Service is already issuing real forecasts for Independence Day (find your local forecast), but here’s a historical look at the probability that your Fourth of July picnic will be rained on, based on observations from 1981-2010. Double click on the map (or use controls at upper left) to zoom in. SIngle click on a dot to see the chances for rain based on a location's climate history. More explanation and static maps for download are available in this week's Beyond the Data blog post. Interactive by NOAA Climate.gov, based on U.S. Climate Normals data from Deke Arndt, National Centers for Environmental Informaiton.