Some of the latest long-range climate models indicate portions of the Pacific Northwest, Great Basin and north-central California likely will see slightly warmer than normal April temperatures.
As a result, these regions are projected to see a little lower than average total heating degree-days for month and slightly lower heating costs.
In contrast, temperatures are forecast to be at least slightly colder than normal across parts of the Midwest, Ozarks, southern Plains and possibly parts of the Northeast. A surplus of total monthly heating degree-days of between 20 and 60 is expected throughout these areas. Late-season heating costs also are likely be higher than average.
Closer to normal temperatures are expected throughout the Rockies, Great Lakes and Southeast. As for the ENSO phase, it remains neutral to possibly a weak El Nino.
Sea-surface temperatures across the Equatorial Pacific Ocean have not changed much during the past month and remain slightly warmer than average. This neutral to weak El Nino phase likely will persist and have only a minor impact on spring temperatures across the U.S.