BROOKINGS, S.D.(WNAX)- Weather observers expect the La Nina climate driver to finally fade away this spring and summer. That is a cooling of the Pacific Ocean surface which has an impact on North American weather.

South Dakota State Climatologist Laura Edwards says this La Nina has been persistent.

Edwards says they can still get some guidance on weather this month.

Edwards says spring can be unpredictable in any case.

Edwards says the expectation is that an El Nino, or a warming of sea surface temperatures, will begin this summer into the fall.