Average August Weather in Rhode Island

Typical temperatures, precipitation, humidity and sunshine during August at cities and towns throughout Rhode Island are listed below.

Temperatures in Rhode Island for August

This table gives the averages in degrees Fahrenheit and Celsius for maximum and minimum monthly temperatures. These normal temperatures are based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

Average August temperatures
High °F Low °F Place High °C Low °C
82 60 Kingston 28 16
78 64 Newport 26 18
79 60 North Foster 26 16
82 64 Providence 28 18
84 64 Tiverton 29 18
81 64 Westerly 27 18
83 62 Woonsocket 28 17

Precipitation in Rhode Island for August

Here are the August averages for rainfall in Rhode Island. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation, based on the weather during 1991 to 2020. The calculation of days only includes those when precipitation totalled 0.01 inches (0.25 millimetres) or more.

Average precipitation in August
Days Place Inches Milli­metres
10 Kingston 4.3 108
11 Newport 3.3 84
10 North Foster 4.5 115
9 Providence 3.6 91
9 Tiverton 3.8 97
9 Westerly 3.5 89
10 Woonsocket 4.0 102

Sunshine in Rhode Island for August

In the table below, the average number of Sunny Days in Rhode Island is the total days this month 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 during August are mainly overcast, with at least 80% cloud cover. Total Days With Sun is a sum of the Sunny plus Partly Sunny days.

Days of sunshine in August
City Sunny Partly Sunny Total Days
With Sun
Block Island 7 11 18
Providence 8 10 18

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 August humidity (%)
Daily City Morning Afternoon
73 Providence 80 59

National Climatic Data Center. Comparative Climatic Data.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

World Data Center for Meteorology. Climate of the World.

More Rhode Island Weather Information

Rhode Island Weather
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