Earlier this month, Weather Underground offered a good look at the two previous times that La Nina occurred three years in a row and how it affected climate. As their analysis shows, temperature was less similar than precipitation, so if this holds, you are more likely to see a dry winter than a warm one. Of course, there are always other factors affecting the atmosphere so just knowing it will be a La Nina is not enough to make the forecast a sure thing. Stay tuned and we will find out!