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 September 2020. For more information, please see Climatological Rankings.
Washington
Precipitation Rankings, September 2020
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 2020 1-Month |
2.41" (61.21mm) | 1.95" (49.53mm) |
0.46" (11.68mm) | 87th Driest | Driest since: 2018 | 1975 |
| 40th Wettest | Wettest since: 2019 | 2013 | ||||
|
Aug–Sep 2020 2-Month |
2.97" (75.44mm) | 2.97" (75.44mm) |
0.00" (0.00mm) | 71st Driest | Driest since: 2018 | 2012 |
| 56th Wettest | Wettest since: 2019 | 2013 | ||||
|
Jul–Sep 2020 3-Month |
3.37" (85.60mm) | 3.87" (98.30mm) |
-0.50" (-12.70mm) | 56th Driest | Driest since: 2018 | 1929 |
| 71st Wettest | Wettest since: 2019 | 1920, 1978 | ||||
|
Jun–Sep 2020 4-Month |
5.76" (146.30mm) | 5.76" (146.30mm) |
0.00" (0.00mm) | 72nd Driest | Driest since: 2018 | 2003 |
| 55th Wettest | Wettest since: 2019 | 1948 | ||||
| Ties: 1926, 2014 | ||||||
|
May–Sep 2020 5-Month |
9.26" (235.20mm) | 8.00" (203.20mm) |
1.26" (32.00mm) | 96th Driest | Driest since: 2019 | 2003 |
| 31st Wettest | Wettest since: 2013 | 1948 | ||||
|
Apr–Sep 2020 6-Month |
10.64" (270.26mm) | 10.83" (275.08mm) |
-0.19" (-4.82mm) | 61st Driest | Driest since: 2018 | 1938 |
| 66th Wettest | Wettest since: 2019 | 1948 | ||||
|
Mar–Sep 2020 7-Month |
13.48" (342.39mm) | 14.98" (380.49mm) |
-1.50" (-38.10mm) | 39th Driest | Driest since: 2019 | 1924 |
| 88th Wettest | Wettest since: 2017 | 1997 | ||||
|
Feb–Sep 2020 8-Month |
18.42" (467.87mm) | 19.72" (500.89mm) |
-1.30" (-33.02mm) | 49th Driest | Driest since: 2019 | 1973 |
| 78th Wettest | Wettest since: 2017 | 1948 | ||||
|
Jan–Sep 2020 9-Month |
28.93" (734.82mm) | 25.78" (654.81mm) |
3.15" (80.01mm) | 100th Driest | Driest since: 2019 | 1929 |
| 27th Wettest | Wettest since: 2017 | 1972 | ||||
|
Dec 2019–Sep 2020 10-Month |
34.52" (876.81mm) | 32.30" (820.42mm) |
2.22" (56.39mm) | 85th Driest | Driest since: 2019 | 1929 |
| 41st Wettest | Wettest since: 2017 | 1997 | ||||
|
Nov 2019–Sep 2020 11-Month |
36.38" (924.05mm) | 38.43" (976.12mm) |
-2.05" (-52.07mm) | 48th Driest | Driest since: 2019 | 1929 |
| 78th Wettest | Wettest since: 2018 | 1997 | ||||
|
Oct 2019–Sep 2020 12-Month |
40.16" (1,020.06mm) | 42.12" (1,069.85mm) |
-1.96" (-49.79mm) | 50th Driest | Driest since: 2019 | 1977 |
| 76th Wettest | Wettest since: 2018 | 1997 | ||||
|
Apr 2019–Sep 2020 18-Month |
51.99" (1,320.55mm) | 52.97" (1,345.44mm) |
-0.98" (-24.89mm) | 59th Driest | Driest since: 2019 | 1929 |
| 67th Wettest | Wettest since: 2018 | 1997 | ||||
| Ties: 1928 | ||||||
|
Oct 2018–Sep 2020 24-Month |
77.88" (1,978.15mm) | 84.27" (2,140.46mm) |
-6.39" (-162.31mm) | 31st Driest | Driest since: 2015 | 1930 |
| 94th Wettest | Wettest since: 2019 | 1997 | ||||
|
Oct 2017–Sep 2020 36-Month |
122.33" (3,107.18mm) | 126.34" (3,209.04mm) |
-4.01" (-101.86mm) | 41st Driest | Driest since: 2005 | 1931 |
| 83rd Wettest | Wettest since: 2019 | 1997 | ||||
|
Oct 2016–Sep 2020 48-Month |
174.14" (4,423.16mm) | 168.46" (4,278.88mm) |
5.68" (144.28mm) | 79th Driest | Driest since: 2015 | 1931 |
| 44th Wettest | Wettest since: 2019 | 1999 | ||||
|
Oct 2015–Sep 2020 60-Month |
223.81" (5,684.77mm) | 210.45" (5,345.43mm) |
13.36" (339.34mm) | 96th Driest | Driest since: 2019 | 1930 |
| 26th Wettest | Wettest since: 2017 | 1999 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 23, 2020 from https://www.ncdc.noaa.gov/cag/