The total seasonal accumulation of rainfall can be obtained from multiple sources, but few sources provide both near-real time global coverage and a historical climatology for comparison.  Here we use the U.S. Climate Prediction Center’s Unified Gauge-based Analysis of Global Daily Precipitation.

Here is the anomalous accumulation of precipitation since the start of the summer season:

The above anomaly is computed relative to a daily climatology from 2006-2013: