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 January 2021. For more information, please see Climatological Rankings.
Northwest Climate Region
Precipitation Rankings, September 2017
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 2017 1-Month |
1.61" (40.89mm) | 1.42" (36.07mm) |
0.19" (4.82mm) | 86th Driest | Driest since: 2016 | 1975 |
| 41st Wettest | Wettest since: 2013 | 2013 | ||||
| Ties: 1930 | ||||||
|
Aug–Sep 2017 2-Month |
1.85" (46.99mm) | 2.22" (56.39mm) |
-0.37" (-9.40mm) | 52nd Driest | Driest since: 2016 | 2012 |
| 75th Wettest | Wettest since: 2015 | 2013 | ||||
| Ties: 1992 | ||||||
|
Jul–Sep 2017 3-Month |
2.00" (50.80mm) | 2.95" (74.93mm) |
-0.95" (-24.13mm) | 26th Driest | Driest since: 2012 | 1929 |
| 101st Wettest | Wettest since: 2016 | 1978 | ||||
|
Jun–Sep 2017 4-Month |
3.53" (89.66mm) | 4.67" (118.62mm) |
-1.14" (-28.96mm) | 32nd Driest | Driest since: 2016 | 2003 |
| 95th Wettest | Wettest since: 2014 | 1941 | ||||
|
May–Sep 2017 5-Month |
5.35" (135.89mm) | 6.81" (172.97mm) |
-1.46" (-37.08mm) | 27th Driest | Driest since: 2016 | 1928 |
| 100th Wettest | Wettest since: 2015 | 1941 | ||||
|
Apr–Sep 2017 6-Month |
9.19" (233.43mm) | 9.17" (232.92mm) |
0.02" (0.51mm) | 65th Driest | Driest since: 2016 | 1924 |
| 62nd Wettest | Wettest since: 2014 | 1948 | ||||
|
Mar–Sep 2017 7-Month |
15.17" (385.32mm) | 12.43" (315.72mm) |
2.74" (69.60mm) | 116th Driest | Driest since: 2016 | 1924 |
| 11th Wettest | Wettest since: 2012 | 1948 | ||||
|
Feb–Sep 2017 8-Month |
21.31" (541.27mm) | 16.04" (407.42mm) |
5.27" (133.85mm) | 123rd Driest | Driest since: 2016 | 1924 |
| 4th Wettest | Wettest since: 1983 | 1983 | ||||
|
Jan–Sep 2017 9-Month |
25.38" (644.65mm) | 20.57" (522.48mm) |
4.81" (122.17mm) | 120th Driest | Driest since: 2016 | 1924 |
| 7th Wettest | Wettest since: 1997 | 1983 | ||||
|
Dec 2016–Sep 2017 10-Month |
30.01" (762.25mm) | 25.21" (640.33mm) |
4.80" (121.92mm) | 115th Driest | Driest since: 2016 | 2001 |
| 11th Wettest | Wettest since: 1997 | 1997 | ||||
|
Nov 2016–Sep 2017 11-Month |
33.86" (860.04mm) | 29.56" (750.82mm) |
4.30" (109.22mm) | 106th Driest | Driest since: 2016 | 2001 |
| 20th Wettest | Wettest since: 2011 | 1997 | ||||
|
Oct 2016–Sep 2017 12-Month |
41.02" (1,041.91mm) | 32.12" (815.85mm) |
8.90" (226.06mm) | 123rd Driest | Driest since: 2016 | 1977 |
| 3rd Wettest | Wettest since: 1997 | 1997 | ||||
|
Apr 2016–Sep 2017 18-Month |
47.96" (1,218.18mm) | 41.30" (1,049.02mm) |
6.66" (169.16mm) | 111th Driest | Driest since: 2016 | 1929, 2001 |
| 15th Wettest | Wettest since: 2011 | 1997 | ||||
|
Oct 2015–Sep 2017 24-Month |
76.01" (1,930.65mm) | 64.26" (1,632.20mm) |
11.75" (298.45mm) | 118th Driest | Driest since: 2016 | 1930 |
| 7th Wettest | Wettest since: 1998 | 1997 | ||||
|
Oct 2014–Sep 2017 36-Month |
104.90" (2,664.46mm) | 96.34" (2,447.04mm) |
8.56" (217.42mm) | 111th Driest | Driest since: 2016 | 1931 |
| 13th Wettest | Wettest since: 1999 | 1997 | ||||
|
Oct 2013–Sep 2017 48-Month |
133.59" (3,393.19mm) | 128.40" (3,261.36mm) |
5.19" (131.83mm) | 95th Driest | Driest since: 2016 | 1931 |
| 28th Wettest | Wettest since: 2013 | 1998 | ||||
|
Oct 2012–Sep 2017 60-Month |
167.61" (4,257.29mm) | 160.37" (4,073.40mm) |
7.24" (183.89mm) | 95th Driest | Driest since: 2016 | 1932 |
| 27th Wettest | Wettest since: 2001 | 1999 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published February 2021, retrieved on March 6, 2021 from https://www.ncdc.noaa.gov/cag/