Rhode Island: Plant Hardiness Zones, Climate & Soil Conditions

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Rhode Island is a state located in the New England region of the northeastern United States.

Rhode Island’s primary agricultural products include nursery stock, dairy products, vegetables, fruits, and shellfish.

The state’s climate and soil are well-suited for agriculture.

Plant Hardiness Zone

Let us understand the US Plant Hardiness Zone Map of the state.

Plant Hardiness Zone Map for Rhode Island


Rhode Island has a humid continental climate with warm to hot summers and cold, snowy winters.

Rhode Island’s weather is variable over the seasons from year to year, with significant daily variations.  

Summers are warm to hot and humid, averaging about eight to ten days that cross 90°F.

The interior areas occasionally register temperatures above 100°F, while the coast is cooler by a few degrees. 

Winter temperatures average from 15-20°F in most of the state except for the coastal regions, where it is slightly higher at 25°F. 


Rhode Island averages an annual rainfall of 42-46 inches with even distribution over the year.

The average snowfall varies from 20-55 inches in the state, with the western third contributing the highest amount of snow.

Providence and the northern shores of the bay receive 25-30 inches of snowfall annually.

Soil Types

The ecoregions of the state are shown in the below map.

Let us now see the soil order distribution in the state.

Soil Order Of Rhode Island

Soil / Sub OrderLocationCharacterstics
Inceptisols/UdeptsThese soils are found all over the state.1. Udepts are mainly freely drained Inceptisols that have a udic or perudic moisture regime.
Entisols/Arents and OrthentsArents are present in the Bristol Lowlands while Orthents are scattered as small patches in southern New England coastal plains and hills and Bristol lowlands.1. Arents do not have diagnostic horizons because they have been deeply mixed by plowing, spading, or other methods of moving by humans.
2. Orthents are commonly found on recent erosional surfaces.
Histosols/SapristsScattered in the southern part of Bristol lowlands and New England coastal plain and hills.1. Saprists are the wet Histosols in which the organic materials are well decomposed.

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