Climate at a Glance

Statewide 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.


Iowa

Palmer Modified Drought Index (PMDI) Rankings, September 1987

Download: xml csv json
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
September 1987
1-Month
1.32 0.20 1.12 85th Driest Driest since: 1985 1934
43rd Wettest Wettest since: 1986 1993
Ties: 1994

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Palmer Modified Drought Index (PMDI), published September 2022, retrieved on September 29, 2022 from https://www.ncdc.noaa.gov/cag/