Average Weather in Rhode Island

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Annual average temperatures, precipitation, snowfall, humidity and sunshine at cities and towns throughout Rhode Island are listed below.

Rhode Island Temperatures

This table gives the averages in degrees Fahrenheit and Celsius for maximum and minimum yearly temperatures. These normal temperatures are based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.

Average annual temperatures
High °F Low °F Place High °C Low °C
59 44 Block Island 15 7
62 40 Kingston 17 4
59 44 Newport 15 7
58 39 North Foster 14 4
61 43 Providence 16 6
61 43 Tiverton 16 6
59 42 Westerly 15 5
60 40 Woonsocket 16 4

Rhode Island Precipitation

Here are the yearly averages for rainfall plus snowfall in Rhode Island. Each place has a total for how many days of wet weather it usually gets in a year and for the normal amount of precipitation, based on the weather during 1981 to 2010. The calculation of days only includes those when precipitation totalled 0.01 inches (0.25 millimetres) or more.

Average total precipitation for a year
Days Place Inches Millimetres
  97 Block Island 42.6 1082
124 Kingston 52.9 1343
121 Newport 48.5 1232
136 North Foster 53.7 1364
125 Providence 47.2 1198
133 Tiverton 48.5 1233
    – Westerly 47.4 1204
133 Woonsocket 51.4 1306

Annual Snowfall in Rhode Island

Listed here are the totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres) in Delaware. The numbers are annual averages of snowfall measurements made during 1981 to 2010.

Average total snowfall
Days Place Inches Centimetres
13.4 Kingston 30.2   76.7
  9.6 Newport 25.4   64.5
27.3 North Foster 57.1 145.0
18.7 Providence 33.8   85.9
18.9 Tiverton 36.6   93.0
14.6 Woonsocket 36.2   91.9

Annual Sunshine in Rhode Island

In the table below, the average number of Sunny Days in Rhode Island is the total days in a year when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours. Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. The rest of the days are mainly overcast, with at least 80% cloud cover. Total Days With Sun is a sum of the Sunny plus Partly Sunny days. These numbers are averages of most the years that the weather stations have operated.

Days of sunshine
City Sunny Partly Sunny Total Days
With Sun
Block Island 98 113 211
Providence 98 103 201

Humidity in Rhode Island

In the table below, the Daily number is the average of relative humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon levels are for 4 pm local standard time. All the humidity numbers are averages for the years 1961 to 1990.

Average annual relative humidity (%)
Daily City Morning Afternoon
68 Providence 75 57
References

National Climatic Data Center. Comparative Climatic Data.

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

World Data Center for Meteorology. Climate of the World.

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