During the core of winter, January and February, you often get a lot of sunny days associated with polar or Arctic high-pressure systems overhead or nearby.  Once you get into March and April, you tend to have more cloudy days again as the storm track shifts farther north, or this region will be nearby to opposing air-masses which also tends to trigger more cloud cover.  In other words, our sunniest periods of the year tend to be in the middle of the summer or the middle of the winter. Spring and autumns with the transitions to warmer or colder periods of time will trigger more clouds, meaning, the next few weeks likely will be a bit cloudier.

Daryl Ritchison