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United States of America - National rainfall index

938.7 (mm) in 2002

In 2002, rainfall index for United States of America was 938.7 mm. Though United States of America rainfall index fluctuated substantially in recent years, it tended to increase through 1969 - 2002 period ending at 938.7 mm in 2002.

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What is rainfall index?

An indicator, developed by FAO, which represents the quality of the crop growing season. The NRI yearly results take into consideration the precipitation that year, the average precipitation over the period 1986-2000, the seasonality of the main crop-growing season (distinguishing between northern and southern hemispheres), and what areas of the country are wetter. The median of each five year period is provided. Note: due to methodological differences, this variable is not comparable to average precipitation

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What is United States of America rainfall index?

Date Value Change, %
2002 938.7 -6.60 %
1996 1,005.0 -1.47 %
1992 1,020.0 4.66 %
1984 974.6 2.68 %
1981 949.2 -5.83 %
1974 1,008.0 5.86 %
1969 952.2 2.55 %
1965 928.5