Jamestown
Rhode Island, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Jamestown, RI

January, like December, in Jamestown, Rhode Island, is a wintry winter month, with temperature in the range of an average low of 26.4°F (-3.1°C) and an average high of 36.1°F (2.3°C). January is the coldest month, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 26.4°F (-3.1°C). Weather in January »

February, the last month of the winter, in Jamestown, is also a wintry month, with average temperature varying between 26.6°F (-3°C) and 37.9°F (3.3°C). In Jamestown, the average high-temperature is almost the same as in January - a still wintry 37.9°F (3.3°C). Weather in February »

March, the first month of the spring, in Jamestown, is a chilly month, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 43.5°F (6.4°C). In Jamestown, the average high-temperature slightly increases, from a wintry 37.9°F (3.3°C) in February, to a chilly 43.5°F (6.4°C). Weather in March »

April in Jamestown, Rhode Island, is a fresh spring month, with average temperature fluctuating between 42.1°F (5.6°C) and 53.2°F (11.8°C). In Jamestown, Rhode Island, the average high-temperature in April increases, from a chilly 43.5°F (6.4°C) in March, to a cool 53.2°F (11.8°C). Weather in April »

May, the last month of the spring, in Jamestown, is a comfortable month, with average temperature varying between 50.7°F (10.4°C) and 62.6°F (17°C). In Jamestown, the average high-temperature increases, from a cool 53.2°F (11.8°C) in April, to a comfortable 62.6°F (17°C). Weather in May »

The first month of the summer, June, is an agreeable month in Jamestown, Rhode Island, with average temperature fluctuating between 70.5°F (21.4°C) and 58.8°F (14.9°C). In Jamestown, Rhode Island, the average high-temperature marginally rises, from an enjoyable 62.6°F (17°C) in May, to a pleasant 70.5°F (21.4°C). Weather in June »

July in Jamestown, Rhode Island, is a moderately hot summer month, with average temperature varying between 78.3°F (25.7°C) and 66.7°F (19.3°C). With an average high-temperature of 78.3°F (25.7°C) and an average low-temperature of 66.7°F (19.3°C), July is the warmest month. Weather in July »

The last month of the summer, August, is another warm month in Jamestown, Rhode Island, with average temperature fluctuating between 65.7°F (18.7°C) and 77.7°F (25.4°C). In August, the average high-temperature is essentially the same as in July - a still warm 77.7°F (25.4°C). Weather in August »

September, the first month of the autumn, in Jamestown, is also an agreeable month, with temperature in the range of an average low of 59.7°F (15.4°C) and an average high of 71.4°F (21.9°C). In September, the average high-temperature marginally drops, from a moderately hot 77.7°F (25.4°C) in August, to a pleasant 71.4°F (21.9°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Jamestown, Rhode Island, with average temperature ranging between min 51.3°F (10.7°C) and max 61.7°F (16.5°C). In Jamestown, the average high-temperature in October decreases, from an agreeable 71.4°F (21.9°C) in September, to a comfortable 61.7°F (16.5°C). Weather in October »

November, the last month of the autumn, in Jamestown, is another cool month, with average temperature fluctuating between 40.6°F (4.8°C) and 51.1°F (10.6°C). In November, the average high-temperature decreases, from a comfortable 61.7°F (16.5°C) in October, to a cool 51.1°F (10.6°C). Weather in November »

December, the first month of the winter, in Jamestown, is still a cold month, with average temperature fluctuating between 42.4°F (5.8°C) and 33.1°F (0.6°C). In Jamestown, the average high-temperature in December marginally drops, from a cool 51.1°F (10.6°C) in November, to a cold 42.4°F (5.8°C). Weather in December »

What is the coldest month in Jamestown?

January is the coldest month in Jamestown, Rhode Island, with an average high-temperature of 36.1°F (2.3°C) and an average low-temperature of 26.4°F (-3.1°C).

How many days does it rain in Jamestown?

Throughout the year, there are 148.1 rainfall days, and 29.65" (753mm) of precipitation is accumulated.

When does it snow in Jamestown?

January through March, May, November and December are months with snowfall.

How many days does it snow in Jamestown?

Throughout the year, in Jamestown, Rhode Island, there are 22.9 snowfall days, and 8.78" (223mm) of snow is accumulated.

What are the months with the lowest UV index in Jamestown?

Months with the lowest UV index in Jamestown are January through March and December, with an average maximum UV index of 2.

When does it snow the most in Jamestown?

February is the month with the most snowfall in Jamestown, Rhode Island. Snow falls for 6.2 days and accumulates 2.76" (70mm) of snow.

What is the month with the coldest ocean in Jamestown?

The month with the coldest seawater in Jamestown, Rhode Island, is February, with an average ocean temperature of 38.1°F (3.4°C).

What is the month with the least sunshine in Jamestown?

February has the least sunshine of the year in Jamestown, with an average of 4.8h of sunshine.

What is the least humid month in Jamestown?

With an average relative humidity of 73%, March is the least humid month.

When it does not snow in Jamestown?

In Jamestown, Rhode Island, snow does not fall in April, June through October.

What is the most humid month in Jamestown?

June is the most humid month in Jamestown, with an average relative humidity of 81%.

When are the longest days in Jamestown?

The month with the longest days in Jamestown, Rhode Island, is June, with an average of 15.1h of daylight.

What are the months with the highest UV index in Jamestown?

Months with the highest UV index in Jamestown, Rhode Island, are June through August, with an average maximum UV index of 6.

What is the warmest month in Jamestown?

July is the warmest month in Jamestown, with an average high-temperature of 78.3°F (25.7°C) and an average low-temperature of 66.7°F (19.3°C).

When is the ocean warmest in Jamestown?

With an average ocean temperature of 69.6°F (20.9°C), August is the month with the warmest seawater in Jamestown.

What month has the most sunshine in Jamestown?

The month with the most sunshine in Jamestown is August, with an average of 10.5h of sunshine.

What is the driest month in Jamestown?

The month with the least rainfall is September when the rain falls for 11.6 days and typically collects 1.42" (36mm) of precipitation.

What is the wettest month in Jamestown?

October is the month with the most rainfall. Rain falls for 13.4 days and accumulates 3.27" (83mm) of precipitation.

What is the month with the shortest days in Jamestown?

December has the shortest days of the year, with an average of 9.2h of daylight.
Average temperature - Jamestown, RI
Average rainfall - Jamestown, RI

The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the lowest rainfall) is September (1.42").

Average rainfall days - Jamestown, RI

The month with the highest number of rainy days is April (15.6 days).
The month with the lowest number of rainy days is January (8.3 days).

Average snowfall - Jamestown, RI

The month with the highest snowfall is February (2.76").
Months with the lowest snowfall are April, June, July, August, September and October (0").

Average snowfall days - Jamestown, RI

The month with the highest number of snowfall days is January (6.6 days).
Months with the lowest number of snowfall days are June, July, August, September and October (0 days).

Average sea temperature - Jamestown, RI

The best month for swimming (with the highest average sea temperature) is August (69.6°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

Average daylight / Average sunshine - Jamestown, RI

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

The month with most sunshine is August (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.8h).

Average UV index - Jamestown, RI