Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Northwest Climate Region

Precipitation Rankings, May 1924

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1924
1-Month
0.33"
(8.38mm)
2.14"
(54.36mm)
-1.81"
(-45.98mm)
1st Driest
Driest since:
1924
128th Wettest
Wettest since:
1998
Apr–May 1924
2-Month
1.25"
(31.75mm)
4.50"
(114.30mm)
-3.25"
(-82.55mm)
1st Driest
Driest since:
1924
128th Wettest
Wettest since:
1996
Mar–May 1924
3-Month
2.76"
(70.10mm)
7.76"
(197.10mm)
-5.00"
(-127.00mm)
1st Driest
Driest since:
1924
128th Wettest
Wettest since:
2011
Feb–May 1924
4-Month
6.38"
(162.05mm)
11.37"
(288.80mm)
-4.99"
(-126.75mm)
1st Driest
Driest since:
1924
128th Wettest
Wettest since:
1904
Jan–May 1924
5-Month
9.12"
(231.65mm)
15.90"
(403.86mm)
-6.78"
(-172.21mm)
1st Driest
Driest since:
1924
128th Wettest
Wettest since:
1904
Dec 1923–May 1924
6-Month
13.54"
(343.92mm)
20.54"
(521.72mm)
-7.00"
(-177.80mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1997
Nov 1923–May 1924
7-Month
15.96"
(405.38mm)
24.89"
(632.21mm)
-8.93"
(-226.83mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1974
Oct 1923–May 1924
8-Month
19.12"
(485.65mm)
27.45"
(697.23mm)
-8.33"
(-211.58mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1974
Sep 1923–May 1924
9-Month
20.18"
(512.57mm)
28.87"
(733.30mm)
-8.69"
(-220.73mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1974
Aug 1923–May 1924
10-Month
21.13"
(536.70mm)
29.68"
(753.87mm)
-8.55"
(-217.17mm)
6th Driest
Driest since:
1977
122nd Wettest
Wettest since:
1974
Jul 1923–May 1924
11-Month
22.46"
(570.48mm)
30.40"
(772.16mm)
-7.94"
(-201.68mm)
6th Driest
Driest since:
1977
122nd Wettest
Wettest since:
1974
Jun 1923–May 1924
12-Month
25.11"
(637.79mm)
32.13"
(816.10mm)
-7.02"
(-178.31mm)
9th Driest
Driest since:
1977
119th Wettest
Wettest since:
1996
Dec 1922–May 1924
18-Month
45.92"
(1,166.37mm)
52.65"
(1,337.31mm)
-6.73"
(-170.94mm)
13th Driest
Driest since:
1930
114th Wettest
Wettest since:
1997
Jun 1922–May 1924
24-Month
54.05"
(1,372.87mm)
64.28"
(1,632.71mm)
-10.23"
(-259.84mm)
6th Driest
Driest since:
1930
121st Wettest
Wettest since:
1997
Jun 1921–May 1924
36-Month
84.27"
(2,140.46mm)
96.36"
(2,447.54mm)
-12.09"
(-307.08mm)
7th Driest
Driest since:
1931
119th Wettest
Wettest since:
1998
Jun 1920–May 1924
48-Month
123.57"
(3,138.68mm)
128.40"
(3,261.36mm)
-4.83"
(-122.68mm)
38th Driest
Driest since:
1931
87th Wettest
Wettest since:
1999
Jun 1919–May 1924
60-Month
148.24"
(3,765.30mm)
160.37"
(4,073.40mm)
-12.13"
(-308.10mm)
14th Driest
Driest since:
1933
110th Wettest
Wettest since:
1999

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