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, February 1931

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
February 1931
1-Month
2.19"
(55.63mm)
3.61"
(91.69mm)
-1.42"
(-36.06mm)
25th Driest
Driest since:
1920
104th Wettest
Wettest since:
1904
Jan–Feb 1931
2-Month
5.82"
(147.83mm)
8.14"
(206.76mm)
-2.32"
(-58.93mm)
21st Driest
Driest since:
1977
108th Wettest
Wettest since:
1953
Dec 1930–Feb 1931
3-Month
7.49"
(190.25mm)
12.78"
(324.61mm)
-5.29"
(-134.36mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1965
Nov 1930–Feb 1931
4-Month
10.06"
(255.52mm)
17.14"
(435.36mm)
-7.08"
(-179.84mm)
5th Driest
Driest since:
1977
123rd Wettest
Wettest since:
1974
Oct 1930–Feb 1931
5-Month
12.25"
(311.15mm)
19.69"
(500.13mm)
-7.44"
(-188.98mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1956
Sep 1930–Feb 1931
6-Month
13.86"
(352.04mm)
21.11"
(536.19mm)
-7.25"
(-184.15mm)
5th Driest
Driest since:
1977
123rd Wettest
Wettest since:
1974
Aug 1930–Feb 1931
7-Month
14.58"
(370.33mm)
21.92"
(556.77mm)
-7.34"
(-186.44mm)
5th Driest
Driest since:
1977
123rd Wettest
Wettest since:
1974
Jul 1930–Feb 1931
8-Month
14.79"
(375.67mm)
22.65"
(575.31mm)
-7.86"
(-199.64mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1956
Jun 1930–Feb 1931
9-Month
15.86"
(402.84mm)
24.37"
(619.00mm)
-8.51"
(-216.16mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1996
May 1930–Feb 1931
10-Month
18.19"
(462.03mm)
26.52"
(673.61mm)
-8.33"
(-211.58mm)
5th Driest
Driest since:
1977
123rd Wettest
Wettest since:
1999
Apr 1930–Feb 1931
11-Month
20.44"
(519.18mm)
28.88"
(733.55mm)
-8.44"
(-214.37mm)
4th Driest
Driest since:
1977
124th Wettest
Wettest since:
1997
Mar 1930–Feb 1931
12-Month
22.50"
(571.50mm)
32.14"
(816.36mm)
-9.64"
(-244.86mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1996
Sep 1929–Feb 1931
18-Month
38.03"
(965.96mm)
53.27"
(1,353.06mm)
-15.24"
(-387.10mm)
1st Driest
Driest since:
1931
126th Wettest
Wettest since:
1997
Mar 1929–Feb 1931
24-Month
47.20"
(1,198.88mm)
64.31"
(1,633.47mm)
-17.11"
(-434.59mm)
1st Driest
Driest since:
1931
126th Wettest
Wettest since:
1997
Mar 1928–Feb 1931
36-Month
72.20"
(1,833.88mm)
96.34"
(2,447.04mm)
-24.14"
(-613.16mm)
1st Driest
Driest since:
1931
125th Wettest
Wettest since:
1998
Mar 1927–Feb 1931
48-Month
103.93"
(2,639.82mm)
128.36"
(3,260.34mm)
-24.43"
(-620.52mm)
2nd Driest
Driest since:
1932
123rd Wettest
Wettest since:
1999
Mar 1926–Feb 1931
60-Month
136.30"
(3,462.02mm)
160.34"
(4,072.64mm)
-24.04"
(-610.62mm)
2nd Driest
Driest since:
1932
122nd Wettest
Wettest since:
1999

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