National Rankings

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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, September 1956

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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
September 1956 1-Month	1.44" (36.58mm)	2.49" (63.25mm)	-1.05" (-26.67mm)	1st Driest	Driest to Date	1956
September 1956 1-Month	1.44" (36.58mm)	2.49" (63.25mm)	-1.05" (-26.67mm)	128th Wettest	Wettest since: 1955	1986
Aug–Sep 1956 2-Month	3.65" (92.71mm)	5.11" (129.79mm)	-1.46" (-37.08mm)	1st Driest	Driest to Date	1956
Aug–Sep 1956 2-Month	3.65" (92.71mm)	5.11" (129.79mm)	-1.46" (-37.08mm)	128th Wettest	Wettest since: 1955	1977
Jul–Sep 1956 3-Month	6.43" (163.32mm)	7.88" (200.15mm)	-1.45" (-36.83mm)	3rd Driest	Driest since: 1930	1930
Jul–Sep 1956 3-Month	6.43" (163.32mm)	7.88" (200.15mm)	-1.45" (-36.83mm)	126th Wettest	Wettest since: 1955	1915
Jun–Sep 1956 4-Month	8.64" (219.46mm)	10.81" (274.57mm)	-2.17" (-55.11mm)	2nd Driest	Driest since: 1930	1930
Jun–Sep 1956 4-Month	8.64" (219.46mm)	10.81" (274.57mm)	-2.17" (-55.11mm)	127th Wettest	Wettest since: 1955	1915
May–Sep 1956 5-Month	11.24" (285.50mm)	13.72" (348.49mm)	-2.48" (-62.99mm)	1st Driest	Driest to Date	1956
May–Sep 1956 5-Month	11.24" (285.50mm)	13.72" (348.49mm)	-2.48" (-62.99mm)	128th Wettest	Wettest since: 1955	1915
Apr–Sep 1956 6-Month	13.31" (338.07mm)	16.24" (412.50mm)	-2.93" (-74.43mm)	1st Driest	Driest to Date	1956
Apr–Sep 1956 6-Month	13.31" (338.07mm)	16.24" (412.50mm)	-2.93" (-74.43mm)	128th Wettest	Wettest since: 1955	1915
Mar–Sep 1956 7-Month	15.13" (384.30mm)	18.75" (476.25mm)	-3.62" (-91.95mm)	1st Driest	Driest to Date	1956
Mar–Sep 1956 7-Month	15.13" (384.30mm)	18.75" (476.25mm)	-3.62" (-91.95mm)	128th Wettest	Wettest since: 1955	1973
Feb–Sep 1956 8-Month	17.75" (450.85mm)	20.88" (530.35mm)	-3.13" (-79.50mm)	6th Driest	Driest since: 1954	1930
Feb–Sep 1956 8-Month	17.75" (450.85mm)	20.88" (530.35mm)	-3.13" (-79.50mm)	123rd Wettest	Wettest since: 1955	2019
Jan–Sep 1956 9-Month	20.02" (508.51mm)	23.20" (589.28mm)	-3.18" (-80.77mm)	6th Driest	Driest since: 1934	1934
Jan–Sep 1956 9-Month	20.02" (508.51mm)	23.20" (589.28mm)	-3.18" (-80.77mm)	123rd Wettest	Wettest since: 1955	2019
Dec 1955–Sep 1956 10-Month	22.26" (565.40mm)	25.54" (648.72mm)	-3.28" (-83.32mm)	6th Driest	Driest since: 1934	1931
Dec 1955–Sep 1956 10-Month	22.26" (565.40mm)	25.54" (648.72mm)	-3.28" (-83.32mm)	122nd Wettest	Wettest since: 1955	2019
Nov 1955–Sep 1956 11-Month	24.18" (614.17mm)	27.77" (705.36mm)	-3.59" (-91.19mm)	6th Driest	Driest since: 1934	1934
Nov 1955–Sep 1956 11-Month	24.18" (614.17mm)	27.77" (705.36mm)	-3.59" (-91.19mm)	122nd Wettest	Wettest since: 1955	2019
Oct 1955–Sep 1956 12-Month	26.22" (665.99mm)	29.94" (760.48mm)	-3.72" (-94.49mm)	7th Driest	Driest since: 1954	1934
Oct 1955–Sep 1956 12-Month	26.22" (665.99mm)	29.94" (760.48mm)	-3.72" (-94.49mm)	121st Wettest	Wettest since: 1955	2019
Apr 1955–Sep 1956 18-Month	41.87" (1,063.50mm)	46.20" (1,173.48mm)	-4.33" (-109.98mm)	11th Driest	Driest since: 1955	1931
Apr 1955–Sep 1956 18-Month	41.87" (1,063.50mm)	46.20" (1,173.48mm)	-4.33" (-109.98mm)	117th Wettest	Wettest since: 1952	2019
Oct 1954–Sep 1956 24-Month	53.65" (1,362.71mm)	59.92" (1,521.97mm)	-6.27" (-159.26mm)	4th Driest	Driest since: 1955	1918
Oct 1954–Sep 1956 24-Month	53.65" (1,362.71mm)	59.92" (1,521.97mm)	-6.27" (-159.26mm)	123rd Wettest	Wettest since: 1954	2020
Oct 1953–Sep 1956 36-Month	79.71" (2,024.63mm)	89.87" (2,282.70mm)	-10.16" (-258.07mm)	1st Driest	Driest to Date	1956
Oct 1953–Sep 1956 36-Month	79.71" (2,024.63mm)	89.87" (2,282.70mm)	-10.16" (-258.07mm)	125th Wettest	Wettest since: 1955	2019
Oct 1952–Sep 1956 48-Month	107.36" (2,726.94mm)	119.78" (3,042.41mm)	-12.42" (-315.47mm)	1st Driest	Driest to Date	1956
Oct 1952–Sep 1956 48-Month	107.36" (2,726.94mm)	119.78" (3,042.41mm)	-12.42" (-315.47mm)	124th Wettest	Wettest since: 1955	2019
Oct 1951–Sep 1956 60-Month	136.41" (3,464.81mm)	149.66" (3,801.36mm)	-13.25" (-336.55mm)	1st Driest	Driest to Date	1956
Oct 1951–Sep 1956 60-Month	136.41" (3,464.81mm)	149.66" (3,801.36mm)	-13.25" (-336.55mm)	123rd Wettest	Wettest since: 1955	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings