The temperature outside has hit 19°C, so I've just opened 26 of the 30 windows in my house (the other four are behind furniture and hard to reach). Because I'm moving in about three weeks, and because the forecast says a cold front will come through mid-day tomorrow, I expect that when I close most of the windows tonight they'll stay closed as long as I live here.
Still, with all that sun and warm air on the other side of those open windows, it's time to take Cassie out.