A few weeks ago, we spent three days in a row above 10 degrees (50F). It rained all of those days, but my feet were hot in my boots. I was thrilled at the idea of removing them and moving on to strappy flats. I suggested to the housemate that we turn the heat off. She pointed out that it is February. The heat is still set to winter.
We are now misty.
With bouts of sunshine.
Both are sure signs of March.
I think these are crocus. Are they I wonder? What are your sure signs of spring?