Seattle picked up 35.73 inches of rain in 2018. Measurable rain, 0.01 inch or more in a day, fell on 158 days at Seattle Tacoma Airport; the wettest day brought 1.84 inches on Nov 27, 2018. The 1991-2020 normal for a full year is 39.34 inches. The total landed 3.61 inches below the normal, which works out to 9% less. 2018 ranks 47th out of 78 complete years, wettest first, in a record that starts in 1948.
Monthly rain totals for 2018. Dark bars show measured amounts, light bars show the 1991-2020 normal for comparison.
Every day with measurable rain in 2018
Every day with measurable rain in 2018: Seattle
Date
Rainfall
0.63″ inches
0.43″ inches
0.01″ inches
0.14″ inches
0.02″ inches
0.72″ inches
0.30″ inches
0.27″ inches
0.11″ inches
0.70″ inches
0.45″ inches
0.33″ inches
0.06″ inches
0.01″ inches
0.29″ inches
0.07″ inches
0.73″ inches
0.09″ inches
0.59″ inches
0.06″ inches
0.07″ inches
0.19″ inches
0.16″ inches
1.84″ inches
1.42″ inches
0.01″ inches
0.34″ inches
0.48″ inches
0.11″ inches
0.03″ inches
0.02″ inches
0.11″ inches
0.07″ inches
0.04″ inches
0.05″ inches
0.03″ inches
0.18″ inches
0.30″ inches
0.04″ inches
0.02″ inches
0.03″ inches
0.02″ inches
0.61″ inches
0.84″ inches
0.45″ inches
0.66″ inches
0.06″ inches
0.09″ inches
0.10″ inches
0.03″ inches
0.56″ inches
0.01″ inches
0.30″ inches
0.03″ inches
0.03″ inches
0.05″ inches
0.02″ inches
0.05″ inches
0.03″ inches
0.17″ inches
0.01″ inches
0.42″ inches
0.01″ inches
0.13″ inches
0.04″ inches
0.05″ inches
0.11″ inches
0.01″ inches
0.05″ inches
0.01″ inches
0.02″ inches
0.01″ inches
0.04″ inches
0.13″ inches
0.07″ inches
0.02″ inches
0.06″ inches
0.09″ inches
0.25″ inches
0.01″ inches
0.04″ inches
0.04″ inches
0.03″ inches
0.01″ inches
0.31″ inches
0.01″ inches
0.03″ inches
0.01″ inches
0.59″ inches
0.12″ inches
1.70″ inches
0.66″ inches
0.11″ inches
0.21″ inches
0.18″ inches
0.39″ inches
0.82″ inches
0.05″ inches
0.21″ inches
0.29″ inches
0.08″ inches
0.15″ inches
0.04″ inches
0.23″ inches
0.35″ inches
0.46″ inches
0.10″ inches
0.03″ inches
0.27″ inches
0.35″ inches
0.04″ inches
0.13″ inches
0.18″ inches
0.03″ inches
0.15″ inches
0.01″ inches
0.20″ inches
0.06″ inches
0.03″ inches
0.06″ inches
0.06″ inches
0.30″ inches
0.11″ inches
0.01″ inches
0.10″ inches
0.14″ inches
0.05″ inches
0.05″ inches
0.03″ inches
0.01″ inches
0.14″ inches
0.08″ inches
0.57″ inches
1.09″ inches
0.06″ inches
0.55″ inches
0.41″ inches
0.15″ inches
0.44″ inches
0.88″ inches
0.36″ inches
0.11″ inches
0.08″ inches
0.03″ inches
0.40″ inches
0.43″ inches
0.19″ inches
0.06″ inches
0.01″ inches
0.10″ inches
1.12″ inches
0.17″ inches
0.18″ inches
0.16″ inches
0.33″ inches
0.17″ inches
0.51″ inches
0.13″ inches
Daily totals come from Seattle Tacoma Airport, which appears in GHCN-Daily with records going back to 1948. Station observations are from GHCN-Daily, with a 1-3 day lag and quality checks by NOAA.
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.