The morning commute (15 miles) had a nice steady headwind the whole time. I looked it up when I got to work and the weather website said 8mph, but I could've sworn it felt like more. Anyways, I only got about 12 mph the whole time because of it.
I got to work thinking that the wind wouldn't keep up for the ride home, but it did. The headwind from the morning ride become the tail wind on my afternoon ride and I was cruising at a nice 18 mph the whole time.
Too bad the wind doesn't always go in the direction I want to go