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 August 2022. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, May 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1999
1-Month
2.21"
(56.13mm)
2.14"
(54.36mm)
0.07"
(1.77mm)
69th Driest Driest since: 1997 1924
60th Wettest Wettest since: 1998 1998
Apr–May 1999
2-Month
3.70"
(93.98mm)
4.50"
(114.30mm)
-0.80"
(-20.32mm)
30th Driest Driest since: 1985 1924
99th Wettest Wettest since: 1998 1996
Ties: 1936
Mar–May 1999
3-Month
6.71"
(170.43mm)
7.76"
(197.10mm)
-1.05"
(-26.67mm)
35th Driest Driest since: 1994 1924
94th Wettest Wettest since: 1998 2011
Feb–May 1999
4-Month
13.87"
(352.30mm)
11.37"
(288.80mm)
2.50"
(63.50mm)
112th Driest Driest since: 1998 1924
17th Wettest Wettest since: 1996 1904
Jan–May 1999
5-Month
19.12"
(485.65mm)
15.90"
(403.86mm)
3.22"
(81.79mm)
114th Driest Driest since: 1997 1924
15th Wettest Wettest since: 1998 1904
Dec 1998–May 1999
6-Month
25.31"
(642.87mm)
20.54"
(521.72mm)
4.77"
(121.15mm)
115th Driest Driest since: 1998 1977
13th Wettest Wettest since: 1997 1997
Nov 1998–May 1999
7-Month
32.63"
(828.80mm)
24.89"
(632.21mm)
7.74"
(196.59mm)
124th Driest Driest since: 1998 1977
4th Wettest Wettest since: 1997 1974
Oct 1998–May 1999
8-Month
34.40"
(873.76mm)
27.45"
(697.23mm)
6.95"
(176.53mm)
122nd Driest Driest since: 1998 1977
6th Wettest Wettest since: 1997 1974
Sep 1998–May 1999
9-Month
35.65"
(905.51mm)
28.87"
(733.30mm)
6.78"
(172.21mm)
119th Driest Driest since: 1998 1977
9th Wettest Wettest since: 1997 1974
Aug 1998–May 1999
10-Month
35.87"
(911.10mm)
29.68"
(753.87mm)
6.19"
(157.23mm)
117th Driest Driest since: 1998 1977
11th Wettest Wettest since: 1997 1974
Jul 1998–May 1999
11-Month
36.82"
(935.23mm)
30.40"
(772.16mm)
6.42"
(163.07mm)
117th Driest Driest since: 1998 1977
11th Wettest Wettest since: 1997 1974
Jun 1998–May 1999
12-Month
38.78"
(985.01mm)
32.13"
(816.10mm)
6.65"
(168.91mm)
116th Driest Driest since: 1998 1977
12th Wettest Wettest since: 1997 1996
Dec 1997–May 1999
18-Month
61.57"
(1,563.88mm)
52.65"
(1,337.31mm)
8.92"
(226.57mm)
118th Driest Driest since: 1995 1930
9th Wettest Wettest since: 1998 1997
Jun 1997–May 1999
24-Month
75.74"
(1,923.80mm)
64.28"
(1,632.71mm)
11.46"
(291.09mm)
119th Driest Driest since: 1995 1930
8th Wettest Wettest since: 1998 1997
Jun 1996–May 1999
36-Month
117.06"
(2,973.32mm)
96.36"
(2,447.54mm)
20.70"
(525.78mm)
122nd Driest Driest since: 1996 1931
4th Wettest Wettest since: 1998 1998
Jun 1995–May 1999
48-Month
160.77"
(4,083.56mm)
128.40"
(3,261.36mm)
32.37"
(822.20mm)
124th Driest Driest since: 1998 1931
1st Wettest Wettest to Date 1999
Jun 1994–May 1999
60-Month
196.08"
(4,980.43mm)
160.37"
(4,073.40mm)
35.71"
(907.03mm)
123rd Driest Driest since: 1998 1933
1st Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, Precipitation, published September 2022, retrieved on October 4, 2022 from https://www.ncdc.noaa.gov/cag/