Climate at a Glance
Regional 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 2019. For more information, please see Climatological Rankings.
Northwest Climate Region
Precipitation Rankings, December 2017
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2018) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
December 2017 1-Month |
3.00" (76.20mm) | 4.63" (117.60mm) |
-1.63" (-41.40mm) | 21st Driest | Driest since: 2013 | 1976 |
| 104th Wettest | Wettest since: 2016 | 1964 | ||||
|
Nov–Dec 2017 2-Month |
8.61" (218.69mm) | 8.97" (227.84mm) |
-0.36" (-9.15mm) | 57th Driest | Driest since: 2016 | 1976 |
| 68th Wettest | Wettest since: 2015 | 1996 | ||||
|
Oct–Dec 2017 3-Month |
11.76" (298.70mm) | 11.51" (292.35mm) |
0.25" (6.35mm) | 63rd Driest | Driest since: 2013 | 1976 |
| 62nd Wettest | Wettest since: 2016 | 1996 | ||||
|
Sep–Dec 2017 4-Month |
13.37" (339.60mm) | 12.93" (328.42mm) |
0.44" (11.18mm) | 66th Driest | Driest since: 2013 | 1976 |
| 59th Wettest | Wettest since: 2016 | 1996 | ||||
|
Aug–Dec 2017 5-Month |
13.61" (345.69mm) | 13.73" (348.74mm) |
-0.12" (-3.05mm) | 62nd Driest | Driest since: 2013 | 1936 |
| 63rd Wettest | Wettest since: 2016 | 1996 | ||||
|
Jul–Dec 2017 6-Month |
13.76" (349.50mm) | 14.46" (367.28mm) |
-0.70" (-17.78mm) | 55th Driest | Driest since: 2013 | 1936 |
| 70th Wettest | Wettest since: 2016 | 1996 | ||||
|
Jun–Dec 2017 7-Month |
15.29" (388.37mm) | 16.18" (410.97mm) |
-0.89" (-22.60mm) | 56th Driest | Driest since: 2013 | 1976 |
| 69th Wettest | Wettest since: 2016 | 1996 | ||||
|
May–Dec 2017 8-Month |
17.11" (434.59mm) | 18.32" (465.33mm) |
-1.21" (-30.74mm) | 48th Driest | Driest since: 2013 | 1935 |
| 77th Wettest | Wettest since: 2016 | 1996 | ||||
|
Apr–Dec 2017 9-Month |
20.95" (532.13mm) | 20.67" (525.02mm) |
0.28" (7.11mm) | 68th Driest | Driest since: 2013 | 1976 |
| 57th Wettest | Wettest since: 2016 | 1996 | ||||
| Ties: 1994 | ||||||
|
Mar–Dec 2017 10-Month |
26.93" (684.02mm) | 23.93" (607.82mm) |
3.00" (76.20mm) | 96th Driest | Driest since: 2015 | 1976 |
| 29th Wettest | Wettest since: 2016 | 1996 | ||||
|
Feb–Dec 2017 11-Month |
33.07" (839.98mm) | 27.54" (699.52mm) |
5.53" (140.46mm) | 110th Driest | Driest since: 2016 | 1935 |
| 15th Wettest | Wettest since: 2014 | 1996 | ||||
|
Jan–Dec 2017 12-Month |
37.14" (943.36mm) | 32.07" (814.58mm) |
5.07" (128.78mm) | 110th Driest | Driest since: 2016 | 1929 |
| 15th Wettest | Wettest since: 2012 | 1996 | ||||
|
Jul 2016–Dec 2017 18-Month |
55.09" (1,399.29mm) | 46.58" (1,183.13mm) |
8.51" (216.16mm) | 117th Driest | Driest since: 2016 | 1929 |
| 7th Wettest | Wettest since: 1997 | 1996 | ||||
|
Jan 2016–Dec 2017 24-Month |
72.45" (1,840.23mm) | 64.19" (1,630.43mm) |
8.26" (209.80mm) | 112th Driest | Driest since: 2016 | 1930 |
| 12th Wettest | Wettest since: 1999 | 1996 | ||||
|
Jan 2015–Dec 2017 36-Month |
103.59" (2,631.19mm) | 96.33" (2,446.78mm) |
7.26" (184.41mm) | 106th Driest | Driest since: 2016 | 1930 |
| 17th Wettest | Wettest since: 2012 | 1997 | ||||
|
Jan 2014–Dec 2017 48-Month |
139.57" (3,545.08mm) | 128.33" (3,259.58mm) |
11.24" (285.50mm) | 110th Driest | Driest since: 2016 | 1931 |
| 12th Wettest | Wettest since: 1999 | 1998 | ||||
|
Jan 2013–Dec 2017 60-Month |
164.08" (4,167.63mm) | 160.34" (4,072.64mm) |
3.74" (94.99mm) | 81st Driest | Driest since: 2015 | 1932 |
| 40th Wettest | Wettest since: 2016 | 1999 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published October 2019, retrieved on October 23, 2019 from https://www.ncdc.noaa.gov/cag/