Down to 33 yesterday and 32 this morning in Burke. Chilly, but I'm fine with it as long as the comes out and it's relatively short-lived. And there's little wind.
We've affectionately referred to them as "pollen bombs." We used to have laurel oak catkins everywhere when we lived in Fairlington, but now we're subjected to the circular beech pollen bombs from the multiple 80+' tress in our neighbors' yards. They're beautiful trees, but they shed catkins in the spring; then the squirrels start eating the nuts and dropping the (pointy) casings in the summer; in the autumn, the remaining nuts fall; finally, in winter and early-spring winds bring down the remaining casings.