It's true that the summer makes things better in so many ways. This may not be as applicable, or perhaps even the reverse is true, if you happen to live in a perpetually sunny clime--but here in the Northeast, I feel like the quality of life increases exponentially when the warm weather arrives. Mmm. Pretty mini-roses in my yard.
It certainly affects working from home. That sounds a little odd...or perhaps even unprofessional, but let me explain.
I work from home some days, as you know if you read this. I have an "office" of sorts...where I can close the door and seal off the kids/nanny/playdates/etc. With that said, sometimes it gets a little loud; I can still manage to block it out mentally, but I have to give the high sign to J when I have a conference call so I can make sure I have peace and quiet. Usually they will go upstairs to play (now a viable option since we actually have human-size bedrooms up there).
But spring, summer...the options multiply. You can all go outside. Oh, the benefits. You get the much needed focus-time, and your kids get fresh air...or, you get fresh air: take that conference call outside on your patio if you have a quiet neighborhood.
Mandatory for option maximization: wireless for your house to tote that work-issued laptop around, and an outdoor outlet to plug in when the battery is dying but the weather isn't.