2023-2024 Rainfall Season in Review and Comparison

Sunday, June 30th, marks the end of the California Rainfall Season that began last July 1st. This is a review of the past 12 months' precipitation and a comparison to last year and the 30-year normals. Overall, Northern California checks in close to normal, while Central and Southern California locations were above normal. In general, totals were less than the 2022-2023 rainfall season. The distribution was fairly typical for an El Niño winter, with the largest positive anomalies south of the Tehachapis. It should be noted that all three of the Sierra Precipitation Indices ended up below normal, a critical source of the State's water supply, but given last year's abundant precipitation, most reservoirs are close to full.