Rainfall totals Oakland, CA
For Oakland, the official rainfall for the year to date is 10.20 inches through Aug 21, 2026, according to the National Weather Service daily climate report. The normal for that date is 11.82 inches.
Data from Oakland International Airport, with records back to 1948.
Official rainfall report for Aug 21, 2026
| Measured | Normal | |
|---|---|---|
| Rain on Aug 21, 2026 | 0.00 inches | 0.00 inches |
| Month to date | 0.00 inches | 0.02 inches |
| Year to date | 10.20 inches | 11.82 inches |
| Record for Aug 21 | 0.07 inches | 1951 |
Source: National Weather Service daily climate report for OAKLAND, issued the morning after Aug 21, 2026. The local National Weather Service office issues the daily climate report for the airport station the next morning, and that report is the official figure.
Days with measurable rain, 2026
| Date | Rainfall |
|---|---|
| Jun 27, 2026 | 0.01 inches |
| May 28, 2026 | 0.29 inches |
| May 5, 2026 | 0.05 inches |
| May 4, 2026 | 0.05 inches |
| Apr 22, 2026 | 0.12 inches |
| Apr 21, 2026 | 0.32 inches |
| Apr 20, 2026 | 1.31 inches |
| Apr 12, 2026 | 0.39 inches |
| Apr 11, 2026 | 0.88 inches |
| Apr 10, 2026 | 0.42 inches |
| Apr 1, 2026 | 0.05 inches |
| Mar 31, 2026 | 0.18 inches |
| Feb 25, 2026 | 0.14 inches |
| Feb 24, 2026 | 0.15 inches |
| Feb 23, 2026 | 0.03 inches |
| Feb 19, 2026 | 0.52 inches |
| Feb 18, 2026 | 0.25 inches |
| Feb 17, 2026 | 0.77 inches |
| Feb 16, 2026 | 1.11 inches |
| Feb 15, 2026 | 0.21 inches |
| Feb 11, 2026 | 0.13 inches |
| Feb 10, 2026 | 0.24 inches |
| Jan 27, 2026 | 0.02 inches |
| Jan 7, 2026 | 0.03 inches |
| Jan 6, 2026 | 0.03 inches |
| Jan 5, 2026 | 0.76 inches |
| Jan 4, 2026 | 1.00 inches |
| Jan 3, 2026 | 0.07 inches |
| Jan 2, 2026 | 0.09 inches |
| Jan 1, 2026 | 0.58 inches |
Through Aug 19, 2026, the GHCN-Daily station record shows 10.20 inches of measurable rain so far this year, falling over a 30-day span. Station observations are from GHCN-Daily, with a 1-3 day lag and quality checks by NOAA.
All-time rainfall records
| Wettest day | 5.01 inches | Dec 31, 2022 |
|---|---|---|
| Wettest year | 29.37 inches | 1973 |
| Driest year | 4.89 inches | 2013 |
| Average year | 17.52 inches | 61 complete years on record |
| Rain days a year | 63 | average, 0.01 inch or more |
| Record begins | 1948 | 22,624 daily readings |
Monthly rainfall normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | 3.42 | 3.51 | 2.71 | 1.35 | 0.63 | 0.18 | 0.00 | 0.04 | 0.10 | 0.88 | 2.02 | 3.84 | 18.68 |
Averages are 1991-2020 normals from NCEI.
The daily climate report is issued by the local National Weather Service forecast office and delivered to this page by the Iowa Environmental Mesonet of Iowa State University. Under 17 U.S.C. 105, no copyright attaches to the government-produced figures on this page, including reports, alerts, station observations, and normals, which were created by the National Weather Service and other NOAA offices. The notice that 17 U.S.C. 403 requires appears in this sentence. It does not imply endorsement by or affiliation with those agencies. See: Data sources and attribution.