It won't be very bright. Warm winters = lots of cloud cover. It's those really frigid days when you need sunglasses to go outside. The real question, however

It won't be very bright. Warm winters = lots of cloud cover. It's those really frigid days when you need sunglasses to go outside. The real question, however, is whether El Niño reduces the odds of a February/March polar vortex in Chicago. I think that it does - a little. The overall odds are still probably > 35%