Climate at a Glance
Statewide Rankings
Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2022. For more information, please see Climatological Rankings.
Washington
Precipitation Rankings, May 2018
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2022) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
May 2018 1-Month |
1.08" (27.43mm) | 2.25" (57.15mm) |
-1.17" (-29.72mm) | 8th Driest | Driest since: 1992 | 1924 |
| 121st Wettest | Wettest since: 2017 | 1948 | ||||
|
Apr–May 2018 2-Month |
6.55" (166.37mm) | 5.08" (129.03mm) |
1.47" (37.34mm) | 107th Driest | Driest since: 2016 | 1924 |
| 22nd Wettest | Wettest since: 2017 | 1948 | ||||
| Ties: 1941 | ||||||
|
Mar–May 2018 3-Month |
9.84" (249.94mm) | 9.23" (234.44mm) |
0.61" (15.50mm) | 81st Driest | Driest since: 2015 | 1924 |
| 48th Wettest | Wettest since: 2017 | 2011 | ||||
|
Feb–May 2018 4-Month |
14.23" (361.44mm) | 13.96" (354.58mm) |
0.27" (6.86mm) | 75th Driest | Driest since: 2015 | 1973 |
| 54th Wettest | Wettest since: 2017 | 2017 | ||||
|
Jan–May 2018 5-Month |
21.97" (558.04mm) | 20.03" (508.76mm) |
1.94" (49.28mm) | 88th Driest | Driest since: 2015 | 1985 |
| 41st Wettest | Wettest since: 2017 | 1961 | ||||
|
Dec 2017–May 2018 6-Month |
27.06" (687.32mm) | 26.54" (674.12mm) |
0.52" (13.20mm) | 70th Driest | Driest since: 2015 | 1985 |
| 58th Wettest | Wettest since: 2017 | 1997 | ||||
|
Nov 2017–May 2018 7-Month |
35.92" (912.37mm) | 32.67" (829.82mm) |
3.25" (82.55mm) | 86th Driest | Driest since: 2015 | 1977 |
| 42nd Wettest | Wettest since: 2017 | 1974 | ||||
|
Oct 2017–May 2018 8-Month |
40.98" (1,040.89mm) | 36.36" (923.54mm) |
4.62" (117.35mm) | 98th Driest | Driest since: 2015 | 1977 |
| 30th Wettest | Wettest since: 2017 | 1974 | ||||
| Ties: 1919 | ||||||
|
Sep 2017–May 2018 9-Month |
42.33" (1,075.18mm) | 38.32" (973.33mm) |
4.01" (101.85mm) | 95th Driest | Driest since: 2015 | 1977 |
| 33rd Wettest | Wettest since: 2017 | 1974 | ||||
|
Aug 2017–May 2018 10-Month |
42.47" (1,078.74mm) | 39.35" (999.49mm) |
3.12" (79.25mm) | 85th Driest | Driest since: 2015 | 1977 |
| 43rd Wettest | Wettest since: 2017 | 1974 | ||||
|
Jul 2017–May 2018 11-Month |
42.51" (1,079.75mm) | 40.24" (1,022.10mm) |
2.27" (57.65mm) | 79th Driest | Driest since: 2015 | 1977 |
| 49th Wettest | Wettest since: 2017 | 1974 | ||||
| Ties: 1903 | ||||||
|
Jun 2017–May 2018 12-Month |
44.06" (1,119.12mm) | 42.13" (1,070.10mm) |
1.93" (49.02mm) | 78th Driest | Driest since: 2015 | 1977 |
| 50th Wettest | Wettest since: 2017 | 1974 | ||||
|
Dec 2016–May 2018 18-Month |
75.63" (1,921.00mm) | 68.67" (1,744.22mm) |
6.96" (176.78mm) | 96th Driest | Driest since: 2016 | 1930 |
| 31st Wettest | Wettest since: 2017 | 1997 | ||||
|
Jun 2016–May 2018 24-Month |
97.81" (2,484.37mm) | 84.30" (2,141.22mm) |
13.51" (343.15mm) | 118th Driest | Driest since: 2016 | 1930 |
| 9th Wettest | Wettest since: 2017 | 1997 | ||||
|
Jun 2015–May 2018 36-Month |
146.18" (3,712.97mm) | 126.40" (3,210.56mm) |
19.78" (502.41mm) | 120th Driest | Driest since: 2017 | 1931 |
| 6th Wettest | Wettest since: 1999 | 1998 | ||||
|
Jun 2014–May 2018 48-Month |
187.19" (4,754.63mm) | 168.49" (4,279.65mm) |
18.70" (474.98mm) | 117th Driest | Driest since: 2017 | 1931 |
| 8th Wettest | Wettest since: 2000 | 1999 | ||||
|
Jun 2013–May 2018 60-Month |
229.85" (5,838.19mm) | 210.48" (5,346.19mm) |
19.37" (492.00mm) | 111th Driest | Driest since: 2016 | 1930 |
| 13th Wettest | Wettest since: 2017 | 1999 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Precipitation, published September 2022, retrieved on October 1, 2022 from https://www.ncdc.noaa.gov/cag/