This data visualization shows the minimum surface temperatures across the Western Hemisphere for a 24-hour period from 8:00 a.m. EST on December 9 to 8:00 a.m. EST on December 10. The white and blue areas are the coldest, while yellow areas are the hottest.
Note that a portion of every U.S. state, Hawaii included, is forecast to drop within the 32-degree (Fahrenheit) temperature range.
This graphic was created with data from the Global Forecast System mathematical model, which is used by the National Weather Service to produce forecasts up to 16 days in advance. However, like any prediction model, the forecast accuracy decreases significantly the farther out the prediction period is. The GFS is produced by NOAA's National Centers for Environmental Prediction and contains dozens of atmospheric and land-soil variables ranging from temperatures, winds, and precipitation to soil moisture and atmospheric ozone concentration.