Hail in Contra Costa County, California
Radar recorded hail of 1 inch or larger in Contra Costa County on 4 days since October 2020. That is more than 5% of US counties. It ranks 21 of 58 in California.
The largest radar estimate was 3.25 inches on July 27, 2022. The most recent 1-inch day was August 23, 2025. Radar estimates and ground reports often differ, so see how they compare.
See the county center on the map
Days of 1-inch hail by year
| Year | Days |
|---|---|
| 2020 (from October) | 0 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 1 |
| 2026 | 0 |
Largest hail days
| Storm day | Radar estimate |
|---|---|
| July 27, 2022 | 3.25 in |
| July 25, 2021 | 2.25 in |
| July 22, 2021 | 1.5 in |
| August 23, 2025 | 1.05 in |
Ground reports
Within this area, storm spotters and weather offices logged 1 hail reports since October 2020, and 4 tornadoes started here since 1950.
Figures cover a circle with the same land area as the county, centered on it, so edges are approximate.
Most hail days in California
- Riverside County: 35 days
- Siskiyou County: 24 days
- Lassen County: 20 days
- San Bernardino County: 20 days
- Imperial County: 19 days
- Mono County: 15 days