The weak El Nino phase in the Equatorial Pacific Ocean is persisting as sea-surface temperatures continue to be slightly warmer than average for the most part. The latest long-range climate models suggest that this weak El Nino will remain in place throughout the rest of the spring season and then may gradually weaken back to a neutral phase as we head toward the summer months.
As for the April temperature outlook, parts of the Pacific Northwest, Mid-Atlantic, and Southeast are forecast to see temperatures average slightly above normal. A monthly deficit of late-season heating degree days of between 20 and 40 is projected across these regions of the country.
Late-season energy costs with respect to heating may also be a little lower in these areas during the month of April. On a whole, temperatures are predicted to be closer to normal across much of the Plains, Rockies, Midwest, Great Lakes, and Northeast during the month of April.