Much of the United States has experienced significantly below average or above average rainfall; very few places are on par with long-term average precipitation amounts, as shown in the map above ...

They’re drawing from slightly different sets of annual data, with the USDA map using the average temperatures from 1976 to 2005 and NOAA using 1981 to 2010. But the differences go deeper.

The country, like most of the world, is becoming both drier and wetter in the era of climate change. It depends where you live. Change in annual average precipitation, in inches In the last 30 ...

A map from the NWS Climate Prediction Center shows the precipitation outlook for the week ending in December 22, the start of Christmas week. Many states are expecting below-average precipitation.

A new study has investigated how the relationship between mean annual precipitation (MAP) and grassland biomass changes when one or more nutrients are added. The authors show that precipitation ...