2026-08-12
California's year ends on September 30, and the snowpack is why
The water year runs October to September because the wet season does. A calendar year would cut the state's only rainy period in half.
Mechanisms and seasons, filed against the measured record. Never an event report.
This desk shares its store with Golden State Weather, and every piece is an explainer, a seasonal outlook or a site notice — the kind is on every card. Nothing here reports an event, because neither site carries a live feed to report one from; that rule is written into the build.
The water year runs October to September because the wet season does. A calendar year would cut the state's only rainy period in half.
The North American Monsoon reaches the southeastern deserts and nowhere else in the state. On the precipitation charts, those stations break the pattern visibly.