Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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, October 1951

View Period (Months):
Download: CSV JSON XML
  • Record Driest
  • Bottom ⅒
  • Bottom ⅓
  • Normal
  • Top ⅓
  • Top ⅒
  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
October 1951
1-Month		4.85"
(123.19mm)		2.54"
(64.52mm)		2.31"
(58.67mm)		123rd Driest
Driest since:
1895
6th Wettest
Wettest since:
2016
Sep–Oct 1951
2-Month		5.89"
(149.61mm)		3.96"
(100.58mm)		1.93"
(49.03mm)		115th Driest
Driest since:
1987
14th Wettest
Wettest since:
2016
Aug–Oct 1951
3-Month		6.92"
(175.77mm)		4.76"
(120.90mm)		2.16"
(54.87mm)		115th Driest
Driest since:
1987
14th Wettest
Wettest since:
2016
Jul–Oct 1951
4-Month		7.40"
(187.96mm)		5.49"
(139.45mm)		1.91"
(48.51mm)		113th Driest
Driest since:
1952
16th Wettest
Wettest since:
2016
Jun–Oct 1951
5-Month		8.28"
(210.31mm)		7.21"
(183.13mm)		1.07"
(27.18mm)		100th Driest
Driest since:
1917, 2002
29th Wettest
Wettest since:
1947
May–Oct 1951
6-Month		10.17"
(258.32mm)		9.35"
(237.49mm)		0.82"
(20.83mm)		87th Driest
Driest since:
2002
42nd Wettest
Wettest since:
1941
Apr–Oct 1951
7-Month		11.37"
(288.80mm)		11.71"
(297.43mm)		-0.34"
(-8.63mm)		57th Driest
Driest since:
2002
72nd Wettest
Wettest since:
1997
Mar–Oct 1951
8-Month		14.66"
(372.36mm)		14.97"
(380.24mm)		-0.31"
(-7.88mm)		56th Driest
Driest since:
1939
73rd Wettest
Wettest since:
1997
Feb–Oct 1951
9-Month		19.26"
(489.20mm)		18.58"
(471.93mm)		0.68"
(17.27mm)		77th Driest
Driest since:
1929
52nd Wettest
Wettest since:
2017
Ties: 1999
Jan–Oct 1951
10-Month		25.02"
(635.51mm)		23.10"
(586.74mm)		1.92"
(48.77mm)		95th Driest
Driest since:
1929
34th Wettest
Wettest since:
1950
Dec 1950–Oct 1951
11-Month		30.18"
(766.57mm)		27.75"
(704.85mm)		2.43"
(61.72mm)		97th Driest
Driest since:
1929
31st Wettest
Wettest since:
1997
Ties: 1967
Nov 1950–Oct 1951
12-Month		35.17"
(893.32mm)		32.10"
(815.34mm)		3.07"
(77.98mm)		99th Driest
Driest since:
1977
29th Wettest
Wettest since:
1997
May 1950–Oct 1951
18-Month		47.11"
(1,196.59mm)		41.48"
(1,053.59mm)		5.63"
(143.00mm)		110th Driest
Driest since:
1929
18th Wettest
Wettest since:
1997
Nov 1949–Oct 1951
24-Month		73.60"
(1,869.44mm)		64.23"
(1,631.44mm)		9.37"
(238.00mm)		117th Driest
Driest since:
1930
10th Wettest
Wettest to Date
1997
Nov 1948–Oct 1951
36-Month		103.25"
(2,622.55mm)		96.31"
(2,446.27mm)		6.94"
(176.28mm)		108th Driest
Driest since:
1931
18th Wettest
Wettest since:
1997
Nov 1947–Oct 1951
48-Month		138.00"
(3,505.20mm)		128.38"
(3,260.85mm)		9.62"
(244.35mm)		111th Driest
Driest since:
1931
14th Wettest
Wettest to Date
1999
Nov 1946–Oct 1951
60-Month		171.74"
(4,362.20mm)		160.37"
(4,073.40mm)		11.37"
(288.80mm)		110th Driest
Driest since:
1932
14th Wettest
Wettest since:
1999

Citing This Page