So far this May, D.C. has had a record number of rainy days (19 of 23) and the coolest high temperatures since 1882. This May’s afternoon highs are running an incredible 15 degrees cooler than last May’s. And we still haven’t hit 80 degrees. The Southeast Regional Climate Center says D.C.’s recent temperatures most resemble San Francisco’s.

Why has D.C.’s weather been so awful this month? There’s a very simple explanation. The storm track has been stuck over the Mid-Atlantic, continuously cycling weather system after weather system through the region — like a conveyor belt. READ MORE