Climate and monthly weather forecast
Jamestown, RI

Weather in January

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

Weather in February

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

Weather in March

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

Weather in April

April is a fresh spring month in Jamestown, Rhode Island, with temperature in the range of an average high of 53.2°F (11.8°C) and an average low of 42.1°F (5.6°C). In April, the average high-temperature rises from a frosty 43.5°F (6.4°C) in March to a fresh 53.2°F (11.8°C). Weather in April »

Weather in May

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

Weather in June

June, the first month of the summer in Jamestown, is a pleasant month, with an 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 in June marginally rises from a comfortable 62.6°F (17°C) in May to an agreeable 70.5°F (21.4°C). Weather in June »

Weather in July

July in Jamestown, Rhode Island, is a warm summer month, with an average temperature ranging between max 78.3°F (25.7°C) and min 66.7°F (19.3°C). The warmest month is July, with an average high-temperature of 78.3°F (25.7°C) and an average low-temperature of 66.7°F (19.3°C). Weather in July »

Weather in August

August, the last month of the summer in Jamestown, is another warm month, with an average temperature ranging between max 77.7°F (25.4°C) and min 65.7°F (18.7°C). In Jamestown, Rhode Island, the average high-temperature in August is relatively the same as in July - a still moderately hot 77.7°F (25.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Jamestown, Rhode Island, with an average temperature varying between 71.4°F (21.9°C) and 59.7°F (15.4°C). In Jamestown, the average high-temperature in September slightly decreases from a moderately hot 77.7°F (25.4°C) in August to an agreeable 71.4°F (21.9°C). Weather in September »

Weather in October

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

Weather in November

The last month of the autumn, November, is another cool month in Jamestown, Rhode Island, with an average temperature ranging between max 51.1°F (10.6°C) and min 40.6°F (4.8°C). In Jamestown, Rhode Island, the average high-temperature in November drops from a comfortable 61.7°F (16.5°C) in October to a fresh 51.1°F (10.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Jamestown, Rhode Island, with an average temperature fluctuating between 42.4°F (5.8°C) and 33.1°F (0.6°C). In December, the average high-temperature 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 »
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FAQ

What is the coldest month in Jamestown?

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

How many days does it rain in Jamestown?

Throughout the year, in Jamestown, 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?

In Jamestown, Rhode Island, during the entire year, snow falls for 22.9 days and aggregates up to 8.78" (223mm) of snow.

When is the lowest UV index in Jamestown?

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

What is the snowiest month in Jamestown?

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

What is the month with the coldest ocean in Jamestown?

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

What is the month with the least sunshine in Jamestown?

The month with the least sunshine in Jamestown is February, with an average of 4.8h of sunshine.

What is the least humid month in Jamestown?

The least humid month is March, with an average relative humidity of 73%.

When is Daylight Saving Time (DST) in Jamestown?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Jamestown, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Jamestown?

April, June through October are months without snowfall in Jamestown.

What is the most humid month in Jamestown?

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

When are the longest days in Jamestown?

The month with the longest days is June, with an average of 15h and 8min of daylight.

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

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Jamestown?

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

What month is the ocean warmest in Jamestown?

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

What month has the most sunshine in Jamestown?

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

What is the driest month in Jamestown?

September is the month with the least rainfall in Jamestown, Rhode Island. Rain falls for 11.6 days and accumulates 1.42" (36mm) of precipitation.

What is the rainiest month in Jamestown?

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

What is the month with the shortest days in Jamestown?

With an average of 9h and 14min of daylight, December has the shortest days of the year in Jamestown, Rhode Island.

Average temperature
Jamestown, RI

Average temperature - Jamestown, RI

The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).

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Average pressure
Jamestown, RI

Average pressure - Jamestown, RI

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Jamestown, RI

Average wind speed - Jamestown, RI

The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

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Average rainfall
Jamestown, RI

Average rainfall - Jamestown, RI

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

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Average rainfall days
Jamestown, RI

Average rainfall days - Jamestown, RI

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

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Average snowfall
Jamestown, RI

Average snowfall - Jamestown, RI

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

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Average snowfall days
Jamestown, RI

Average snowfall days - Jamestown, RI

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

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Average sea temperature
Jamestown, RI

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).

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Average daylight / Average sunshine
Jamestown, RI

Average daylight / Average sunshine - Jamestown, RI

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days
Jamestown, RI

Average sunshine days - Jamestown, RI

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).

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Average UV index
Jamestown, RI

Average UV index - Jamestown, RI

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).

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Average visibility
Jamestown, RI

Average visibility - Jamestown, RI

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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