National Rankings

National Data Info
Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, May 1908

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
May 1908
1-Month		4.13"
(104.90mm)		2.91"
(73.91mm)		1.22"
(30.99mm)		125th Driest
Driest since:
1934
4th Wettest
Wettest to Date
2019
Apr–May 1908
2-Month		6.82"
(173.23mm)		5.43"
(137.92mm)		1.39"
(35.31mm)		121st Driest
Driest since:
1934
8th Wettest
Wettest to Date
1957
Mar–May 1908
3-Month		9.00"
(228.60mm)		7.94"
(201.68mm)		1.06"
(26.92mm)		108th Driest
Driest since:
1925
21st Wettest
Wettest since:
1957, 1991
Feb–May 1908
4-Month		11.81"
(299.97mm)		10.07"
(255.78mm)		1.74"
(44.19mm)		119th Driest
Driest since:
1925
10th Wettest
Wettest since:
2019
Jan–May 1908
5-Month		13.63"
(346.20mm)		12.39"
(314.71mm)		1.24"
(31.49mm)		111th Driest
Driest since:
1934
18th Wettest
Wettest since:
2019
Ties: 1929
Dec 1907–May 1908
6-Month		16.32"
(414.53mm)		14.73"
(374.14mm)		1.59"
(40.39mm)		112th Driest
Driest since:
1931
16th Wettest
Wettest to Date
2019
Nov 1907–May 1908
7-Month		18.57"
(471.68mm)		16.96"
(430.78mm)		1.61"
(40.90mm)		108th Driest
Driest since:
1934
20th Wettest
Wettest since:
1983
Oct 1907–May 1908
8-Month		20.60"
(523.24mm)		19.13"
(485.90mm)		1.47"
(37.34mm)		99th Driest
Driest since:
1934
29th Wettest
Wettest since:
2019
Sep 1907–May 1908
9-Month		23.11"
(586.99mm)		21.62"
(549.15mm)		1.49"
(37.84mm)		99th Driest
Driest since:
1934
29th Wettest
Wettest since:
2019
Aug 1907–May 1908
10-Month		25.66"
(651.76mm)		24.25"
(615.95mm)		1.41"
(35.81mm)		99th Driest
Driest since:
1918
29th Wettest
Wettest since:
2019
Ties: 1946
Jul 1907–May 1908
11-Month		28.66"
(727.96mm)		27.03"
(686.56mm)		1.63"
(41.40mm)		100th Driest
Driest since:
1931
28th Wettest
Wettest since:
2019
Jun 1907–May 1908
12-Month		31.78"
(807.21mm)		29.95"
(760.73mm)		1.83"
(46.48mm)		96th Driest
Driest since:
1934
32nd Wettest
Wettest since:
2019
Ties: 1952
Dec 1906–May 1908
18-Month		47.45"
(1,205.23mm)		44.70"
(1,135.38mm)		2.75"
(69.85mm)		99th Driest
Driest since:
1931
28th Wettest
Wettest since:
2019
Jun 1906–May 1908
24-Month		64.66"
(1,642.36mm)		59.92"
(1,521.97mm)		4.74"
(120.39mm)		112th Driest
Driest since:
1931
15th Wettest
Wettest to Date
2020
Jun 1905–May 1908
36-Month		96.00"
(2,438.40mm)		89.88"
(2,282.95mm)		6.12"
(155.45mm)		111th Driest
Driest since:
1955
15th Wettest
Wettest to Date
2019
Jun 1904–May 1908
48-Month		125.91"
(3,198.11mm)		119.78"
(3,042.41mm)		6.13"
(155.70mm)		104th Driest
Driest since:
1956
21st Wettest
Wettest to Date
2019
Jun 1903–May 1908
60-Month		154.01"
(3,911.85mm)		149.64"
(3,800.86mm)		4.37"
(110.99mm)		92nd Driest
Driest since:
1957
32nd Wettest
Wettest since:
2020
Ties: 1949

Citing This Page