Rainfall totals Portland, OR
Through Oct 7, 2026, Portland has received 18.13 inches of rain for the year, according to the official daily climate report. The normal year-to-date total is 22.83 inches. The normal figure is what the city would typically have seen by this point in the calendar. This reading comes from the station gauge at PORTLAND INTL ARPT in the National Weather Service's daily climate report.
as of
Data from Portland International Airport, with records back to 1938. Across the record from 1938, 100 percent of days have a reading, with 100 percent in 2025.
Most recent rainfall
0.01 inches of rain fell on Sep 25, 2026, the latest measurable rainfall this year.
PORTLAND INTL ARPT saw no measurable rain on Oct 7, 2026, according to the National Weather Service daily climate report.
Official rainfall report for Oct 7, 2026
| Measured | Normal | vs normal | |
|---|---|---|---|
| Rain on Oct 7, 2026 | 0.00 inches | 0.09 inches | -0.09 inches |
| Last 48 hours | 0.00 inches | ||
| Last 72 hours | 0.00 inches | ||
| Last 7 days | 0.00 inches | ||
| Month to date | 0.00 inches | 0.55 inches | -0.55 inches (-100%) |
| Year to date | 18.13 inches | 22.83 inches | -4.70 inches (-21%) |
| Record for Oct 7 | 0.79 inches | 1962 |
Source: National Weather Service daily climate report for PORTLAND INTL ARPT, issued the morning after Oct 7, 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.
How much rain did Portland get?
Days with measurable rain, 2026
| Date | Rainfall |
|---|---|
| Sep 25, 2026 | 0.01 inches |
| Sep 24, 2026 | 0.25 inches |
| Sep 13, 2026 | 0.01 inches |
| Sep 6, 2026 | 0.13 inches |
| Sep 4, 2026 | 0.15 inches |
| Sep 3, 2026 | 0.08 inches |
| Sep 2, 2026 | 0.30 inches |
| Aug 29, 2026 | 0.04 inches |
| Jul 22, 2026 | 0.16 inches |
| Jun 29, 2026 | 0.01 inches |
| Jun 27, 2026 | 0.28 inches |
| Jun 26, 2026 | 0.03 inches |
| Jun 25, 2026 | 0.35 inches |
| Jun 8, 2026 | 0.37 inches |
| Jun 6, 2026 | 0.15 inches |
| May 29, 2026 | 0.03 inches |
| May 26, 2026 | 0.06 inches |
| May 25, 2026 | 0.13 inches |
| May 16, 2026 | 0.10 inches |
| May 15, 2026 | 0.05 inches |
| May 14, 2026 | 0.17 inches |
| May 13, 2026 | 0.11 inches |
| Apr 22, 2026 | 0.43 inches |
| Apr 21, 2026 | 0.30 inches |
| Apr 15, 2026 | 0.54 inches |
| Apr 14, 2026 | 0.18 inches |
| Apr 13, 2026 | 0.12 inches |
| Apr 12, 2026 | 0.16 inches |
| Apr 11, 2026 | 0.32 inches |
| Apr 10, 2026 | 0.27 inches |
With 1.73 inches on Mar 12, 2026, this is the 62nd wettest of the 13,477 measurable rain days in the Portland International Airport record, which begins in 1938. That is the most rain recorded at this station on March 12 since 1938.
Through Oct 3, 2026, the GHCN-Daily station record shows 18.13 inches of measurable rain so far this year, falling over a 77-day span. Station observations are from GHCN-Daily, with a 1-3 day lag and quality checks by NOAA.
Portland rainfall by month, 2026
| Month | Rainfall | Normal | vs normal |
|---|---|---|---|
| January | 2.63 inches | 5.03 inches | -2.40 inches (-48%) |
| February | 4.75 inches | 3.68 inches | +1.07 inches (+29%) |
| March | 5.03 inches | 3.97 inches | +1.06 inches (+27%) |
| April | 2.75 inches | 2.89 inches | -0.14 inches (-5%) |
| May | 0.65 inches | 2.51 inches | -1.86 inches (-74%) |
| June | 1.19 inches | 1.63 inches | -0.44 inches (-27%) |
| July | 0.16 inches | 0.51 inches | -0.35 inches (-69%) |
| August | 0.04 inches | 0.54 inches | -0.50 inches (-93%) |
| September | 0.93 inches | 1.52 inches | -0.59 inches (-39%) |
| October | 0.00 inches | 3.42 inches |
October is still in progress; figures run through Oct 3, 2026. Averages are 1991-2020 normals from NCEI.
Rainfall days at each threshold in Portland
| Year | 0.5+ in. | 1+ in. | 2+ in. | 3+ in. |
|---|---|---|---|---|
| 2025 | 23 | 4 | 1 | 0 |
| 2024 | 25 | 4 | 0 | 0 |
| 2023 | 23 | 4 | 0 | 0 |
| 2022 | 23 | 9 | 1 | 0 |
| 2021 | 19 | 6 | 0 | 0 |
| 2020 | 15 | 2 | 0 | 0 |
| 2019 | 10 | 2 | 0 | 0 |
| 2018 | 13 | 2 | 0 | 0 |
| 2017 | 33 | 7 | 2 | 0 |
| 2016 | 24 | 4 | 0 | 0 |
| Average | 20.7 | 4.6 | 0.3 | 0.0 |
A day counts when its rainfall total meets or passes the column amount, from Portland International Airport records in GHCN-Daily. Every complete year starting with 1938 counts toward the average, 87 years in total.
Past rainfall years in Portland
All-time rainfall records
| Wettest day | 2.69 inches | Nov 19, 1996 |
|---|---|---|
| Wettest year | 63.20 inches | 1996 |
| Driest year | 22.48 inches | 1985 |
| Average year | 36.92 inches | 87 complete years on record |
| Rain days a year | 153 | average, 0.01 inch or more |
| Record begins | 1938 | 32,310 daily readings |
Monthly rainfall normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | 5.03 | 3.68 | 3.97 | 2.89 | 2.51 | 1.63 | 0.51 | 0.54 | 1.52 | 3.42 | 5.45 | 5.77 | 36.92 |
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.