Hard! My normal morning headwind returned today. And I had a box on my front rack, adding a lot to my frontal area in the worst possible way. Yesterday, I think I had my fastest time into work, and today, I think I had my slowest. One saving grace was that the wind wasn't shifty or gusty, just steady. But hard! But really, I'm not complaining. Like most of my rides, I enjoyed it.
It's still windy and cold here in NYC, but some people are dressing for the season, not the day, wearing things like short sleeve shirts, no over clothes, no hat, no gloves. I don't get cold as easily as some people, but I would be cold if I dressed like that in this weather. Maybe they're not going as far.