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Rainfall totals Portland, OR

For Portland, the official rainfall for the year to date is 17.16 inches through Aug 21, 2026, according to the National Weather Service daily climate report. The normal for that date is 20.53 inches.

Data from Portland International Airport, with records back to 1938.

Official rainfall report for Aug 21, 2026

National Weather Service daily climate report for Portland, Aug 21, 2026
MeasuredNormal
Rain on Aug 21, 20260.00 inches0.02 inches
Month to date0.00 inches0.31 inches
Year to date17.16 inches20.53 inches
Record for Aug 210.54 inches2004

Source: National Weather Service daily climate report for PORTLAND INTL ARPT, 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

Days with measurable rain in Portland during 2026, newest first
DateRainfall
Jul 22, 20260.16 inches
Jun 29, 20260.01 inches
Jun 27, 20260.28 inches
Jun 26, 20260.03 inches
Jun 25, 20260.35 inches
Jun 8, 20260.37 inches
Jun 6, 20260.15 inches
May 29, 20260.03 inches
May 26, 20260.06 inches
May 25, 20260.13 inches
May 16, 20260.10 inches
May 15, 20260.05 inches
May 14, 20260.17 inches
May 13, 20260.11 inches
Apr 22, 20260.43 inches
Apr 21, 20260.30 inches
Apr 15, 20260.54 inches
Apr 14, 20260.18 inches
Apr 13, 20260.12 inches
Apr 12, 20260.16 inches
Apr 11, 20260.32 inches
Apr 10, 20260.27 inches
Apr 2, 20260.02 inches
Apr 1, 20260.41 inches
Mar 31, 20260.01 inches
Mar 29, 20260.03 inches
Mar 25, 20260.02 inches
Mar 24, 20260.24 inches
Mar 19, 20260.03 inches
Mar 17, 20260.01 inches

Through Aug 19, 2026, the GHCN-Daily station record shows 17.16 inches of measurable rain so far this year, falling over a 69-day span. Station observations are from GHCN-Daily, with a 1-3 day lag and quality checks by NOAA.

All-time rainfall records

All-time rainfall records for Portland since 1938
Wettest day2.69 inchesNov 19, 1996
Wettest year63.20 inches1996
Driest year22.48 inches1985
Average year36.92 inches87 complete years on record
Rain days a year153average, 0.01 inch or more
Record begins193832,281 daily readings

Monthly rainfall normals

Average monthly rainfall for Portland, 1991 to 2020
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Inches5.033.683.972.892.511.630.510.541.523.425.455.7736.92

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.

All Oregon rainfall totals