Every forecast across The Central Valley,
highway-clear.

Every California region shares one system — the same maps, the same live radar, the same climate record. The valley makes its own weather by sitting still. Tule fog settles in for days every winter and takes the visibility to nothing on 99 and I-5, summer runs weeks of triple digits with the heat trapped between two ranges, and the whole thing depends on a Sierra snowpack that arrives a few storms at a time.