At the end of every season, NOAA provides an overview of what they got right and wrong with the seasonal outlook. This year they did not do well with the temperature forecast, especially in the northern US. Precipitation was a little better, especially in the southern regions of the US. You can read more about their forecast and what went wrong at https://www.climate.gov/news-features/blogs/enso/winter-outlook-2018-2019-how%E2%80%99d-we-do. (Note that they still did better than the Farmers’ Almanac.)