The outlook for June was updated from the Climate Prediction Center (CPC) and it has several changes from the forecast issued only two weeks ago. An area of cooler than normal temperatures has been moved and is now centered in the Tennessee Valley. The warmer than average readings have been pushed to the far Northeast and Southeast, but remain in the West. Wetter than average conditions have been expanded from the Rockies to the Gulf of Mexico, stretching northward into Southern New England.
— NWSCPC (@NWSCPC) May 31, 2017
No influences are expected in June from an El Nino or La Nina as the CPC notes that neutral water temperatures are still being found in the Pacific Ocean. Therefore, forecasters relied heavily on current overall meteorological trends, past climatology, and future weather model predictions.
Soil moisture levels are slightly higher than normal from the Midwest into the Mississippi Valley. At this time of the year, this usually supports a trend of cooler and wetter than average weather. Water temperatures along the Mid Atlantic Coast are slightly cooler than expected, leading to the reduction in the area of above average temperatures.
For WeatherNation: Meteorologist Mace Michaels