CLIMATE DIVISION CA-4

Central Coast Drainage

NOAA California climate division CA-4 — the whole measured record, 1895 to 2025.

DIVISION CA-4 CALIFORNIA

The record in brief

GENERATED FROM THE DIVISIONAL TABLE

Central Coast Drainage is NOAA climate division CA-4. The Bay Area and the central coast, where the marine layer governs the annual temperature range more than latitude does.

Warming, 1895–2025: +2.56°F per century (95% interval ±0.57), statistically significant.
Warmest year: 2014, at 61.7°F.
Water-year normal, 1991–2020: 21.5 inches.
Wettest water year: 1983, 42.3 inches. Driest: 1924, 8.7 inches.
Precipitation trend: +0.4 inches per century, not distinguishable from zero.
ENSO correlation: r = 0.348 between the DJF Oceanic Niño Index and water-year precipitation, over 76 winters.

Temperature

ONE STRIPE PER YEAR, AND THE SERIES BENEATH IT

Precipitation

WATER YEARS, AS A PERCENT OF NORMAL

This division against the state

WHERE IT SITS

All seven divisions are side by side here. For the climate of individual places inside this division — named stations, with their elevations and distances — see the same division on Golden State Weather.