Rhode Island Drought Summary

Percent of time spent in drought categories

-- All Climate Division --
PDSI Category Percent of Time in Category Cumulative Percent Time
Extreme 0.4 0.4
Severe 4.4 4.8
Moderate 13.0 17.8
Mild 21.4 39.2
Incipient 14.5 53.7
Near Normal 13.0 66.7
Wet 33.3 100.0
Lowest PDSI in 1335 months -4.54 in 4/1966

Based on the monthly Palmer Drought Severity Index as computed by the National Climatic Data Center.
"Cumulative" is the percent of time in given category plus all preceeding categories.