An example of La Niña is what causes unusually wet weather.
(plural La Niñas)
la niÃ±a - Investment & Finance Definition
A cold-weather event, or cold episode, in contrast to El NiÃ±o, which is often referred to as a “warm event.” In the United States, La NiÃ±a causes winter temperatures that are warmer than normal in the Southeast and cooler than normal in the Northwest. The effects of both El NiÃ±o and La NiÃ±a are seen more in the winter than in the summer. La NiÃ±a impacts agricultural products and thus is watched by traders and others involved in agricultural commodities. Typically the effects last for several months to a year. La NiÃ±a is Spanish for “the little girl.” See also El NiÃ±o.