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Unfortunately, El Nino, on average, does not have a strong influence on weather in Chicago. It tends to be warmer-than-average to the north and cooler-than-average to the south during winter, so Chicago is in between the two temperature signals. El Nino does bring a slight tendency for drier-than-average winters in the region. Please feel free to check CPC's seasonal outlooks to see how they expect conditions to evolve over Chicago. 

In reply to by Chuck D