Persistent fog, cross-winds, and heavy snow trap aircraft on the ramp so often that these five hubs routinely log the steepest weather-delay tallies.

TONIGHT: Cloudy and damp with lingering showers, low 52. FRIDAY: Clouds continue to dominate with a few scattered showers around, high 65. SATURDAY: Clouds, some sun, high 64. An isolated shower ...

The answer is likely toward the beginning of June as high pressure builds over the region. We could be trading in one extreme for another next month.