Why Do The Seasons Lag Behind The Calendar?

Tools

By By Steve Pool

SEATTLE - Statistically, Seattle is at its warmest in late July and its coldest in late January. But the first day of summer is in late June and winter starts in December, so why the lag time?

Just like a pot of water doesn't boil the instant you turn on the heat, the atmosphere takes some time to warm up or cool down, as the case may be. Even though we get the most daylight in late June, it takes about 30 days for the atmosphere to transfer that maximum warmth to the surface. The same, but opposite effect works in winter.

The oceans and lakes take even longer to respond to heating and cooling. They typically take until late September to be at their warmest, and late March to be at their coldest.

Your Photos

YouNews The Eagle Has Landed The Eagle Has Landed
This image of the Eagle Nebula (M16) was taken Saturday evening with a 5 inch APO refractor, an AP1100 mount and a
QSI imaging camera. LRGB combined images.
YouNews Meteor Trail & M15 Meteor Trail & M15
Imaged a meteor trail during some calibration runs as it past the field of view of M15 Tuesday night around 11pm.
This single 4 minute exposure was taken with a 6-inch refractor (Meade AR6) and a Nikon D3000 at prime focus.