Hail history for San Francisco County, California
Every NOAA hail report filed in San Francisco County since 2017, with preliminary National Weather Service reports to November 3, 2026.
Readout · San Francisco County
- Last hail
- Mar 28, 2023
- 0.25 in, pea size
- Hail days, last 5 years
- 1
- since Nov 3, 2021 · 1 report
- Largest ever
- 0.50 in
- marble · Nov 29, 2018
10 reports on 10 days since 2017 · #33 of 47 California counties
Hail map · San Francisco County
- Under 1 in
- 1–1.75 in
- 1.75–2.5 in
- 2.5–4 in
- 4 in +
- No size
For homeowners
Roof damage after hail? Get a free inspection
Hail bruises shingles and cracks seals in ways you can't see from the ground, and most insurers set a claim deadline after the storm. The latest hail report in San Francisco County is from March 28, 2023. A local roofer can check and document it at no cost.
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What the record says about San Francisco County
The latest hail report in San Francisco County is from March 28, 2023, 0.25 in (pea size). Since November 3, 2021 there has been one hail day; the biggest stones in that time were 0.25 in on March 28, 2023.
Over the 20 years 2006–2025, San Francisco County logged 10 reports on 10 hail days, about 0.5 reports a year. That is 25% more than the median California county (0.4 a year) and ranks #33 of 47 California counties for all-time reports. San Francisco County holds 1% of all 938 hail reports in California.
0% of reports with a size were 2 inches (hen egg) or larger, against 0% for the median California county. The largest hail on record here is 0.50 in (marble) on November 29, 2018 near San Francisco.
Reports were up 1000% in 2016–2025 (10) compared with 2006–2015 (0). The busiest year was 2017, with 4 reports on 4 days. Hail here peaks in January (40% of reports); 0% fall between April and June.
Reports a year 2006–2025 average
- San Francisco County 0.5
- Median California county 0.4
Hail days 2006–2025
- San Francisco County 10
- Median California county 7
Share 2 in or larger of sized reports
- San Francisco County 0%
- Median California county 0%
Hail over time
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0 | ||||||||||||
| 2025 | 0 | ||||||||||||
| 2024 | 0 | ||||||||||||
| 2023 | 1 | 1 | |||||||||||
| 2022 | 0 | ||||||||||||
| 2021 | 1 | 1 | |||||||||||
| 2020 | 1 | 1 | |||||||||||
| 2019 | 1 | 1 | |||||||||||
| 2018 | 1 | 1 | 2 | ||||||||||
| 2017 | 3 | 1 | 4 |
Hail days since Nov 3, 2021
| Date | Reports | Largest | Storm page |
|---|---|---|---|
| Mar 28, 2023 | 1 | 0.25 in | — |
Largest hail on record
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Nov 29, 2018 | 0.50 inmarble | San Francisco | — | 07:00 local · NCEI |
| Mar 28, 2023 | 0.25 inpea | 2.49 E Crissy Aaf | $10 | 14:15 local · NCEI |
| Mar 10, 2021 | 0.25 inpea | San Francisco | — | 12:25 local · NCEI |
| Nov 27, 2019 | 0.25 inpea | 2.79 ESE Crissy Aaf | — | 04:00 local · NCEI |
| Feb 26, 2018 | 0.25 inpea | 3.34 WNW San Francisco | — | 17:00 local · NCEI |
Size of every report
- Under 1 in 10 100%
- 1–2 in 0 0%
- 2 in + 0 0%
Most recent reports
| Date | Size | Location | Damage | Time · source |
|---|---|---|---|---|
| Mar 28, 2023 | 0.25 inpea | 2.49 E Crissy Aaf | $10 | 14:15 local · NCEI |
| Mar 10, 2021 | 0.25 inpea | San Francisco | — | 12:25 local · NCEI |
| Jan 16, 2020 | 0.13 inpea | 2.15 WSW San Francisco | — | 13:19 local · NCEI |
| Nov 27, 2019 | 0.25 inpea | 2.79 ESE Crissy Aaf | — | 04:00 local · NCEI |
| Nov 29, 2018 | 0.50 inmarble | San Francisco | — | 07:00 local · NCEI |
| Feb 26, 2018 | 0.25 inpea | 3.34 WNW San Francisco | — | 17:00 local · NCEI |
| Mar 5, 2017 | 0.25 inpea | 2.12 NE San Francisco | — | 07:10 local · NCEI |
| Jan 23, 2017 | 0.25 inpea | 1.27 SE San Francisco | $10 | 09:58 local · NCEI |
| Jan 22, 2017 | 0.25 inpea | 3.91 S Ocean View | $10 | 14:30 local · NCEI |
| Jan 20, 2017 | 0.25 inpea | 2.14 NE San Francisco | $10 | 04:36 local · NCEI |
Smaller places with fewer than 10 reports
These places have too few reports for a page of their own, so their record lives here.
| Place | Reports | Hail days | Latest |
|---|---|---|---|
| Daly City | 5 | 5 | Mar 10, 2021 |
| Colma | 1 | 1 | Jan 22, 2017 |
Questions about hail in San Francisco County
How often does it hail in San Francisco County, California?
10 hail reports have been logged in San Francisco County since 2017. Over the 20 years 2006–2025 that averages 0.5 reports a year. That ranks #33 of 47 California counties by number of reports.
When is hail season in San Francisco County?
Most reports come in January, March, November. January alone accounts for 40% of all reports.
What is the largest hail recorded in San Francisco County?
0.50 in (marble size) on November 29, 2018 near San Francisco. 0% of reports here were 2 inches or larger.
When did it last hail in San Francisco County?
The most recent report in this data is from March 28, 2023 (0.25 in). Final NOAA data runs to July 31, 2026; preliminary NWS reports run to November 3, 2026.
How many hail storms has San Francisco County had in the last five years?
1 separate days with hail reports since November 3, 2021, adding up to 1 reports. The most recent was March 28, 2023.
Where does this hail data come from?
Hail reports come from the NOAA NCEI Storm Events Database, which the National Weather Service compiles from spotter, public, law enforcement and media reports. Recent days use preliminary NWS Local Storm Reports via the Iowa Environmental Mesonet until NOAA publishes final data. Only reported hail is counted, so areas with fewer people tend to have fewer reports.