Climate Prediction Center (CPC): http://www.cpc.ncep.noaa.gov/products/predictions/


NCEP CFSv2:http://www.cpc.ncep.noaa.gov/products/people/wwang/cfsv2fcst/


NIWA seasonal outlook: https://www.niwa.co.nz/climate/sco


IRI forecast product: http://iri.columbia.edu/our-expertise/climate/forecasts/