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

July weather forecast and climate
Jamestown, RI

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).

Temperature

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.

Humidity

The average relative humidity in Jamestown, Rhode Island, is 80%.

Rainfall

In July, the rain falls for 14.5 days. Throughout July, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 148.1 rainfall days, and 29.65" (753mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In Jamestown, in July, the average water temperature is 67.5°F (19.7°C).
Note: For most, swimming in 67.5°F (19.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

The average length of the day is 14.8h.

Sunshine

In July, the average sunshine in Jamestown is 10.3h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

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).

What is the temperature in July in Jamestown?

The average high-temperature, in July, in Jamestown, is 78.3°F (25.7°C), while the average low-temperature is 66.7°F (19.3°C).

What is the average humidity in July in Jamestown?

In Jamestown, the average relative humidity in July is 80%.

How many days does it rain in July in Jamestown?

In Jamestown, Rhode Island, in July, during 14.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow in Jamestown?

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

How cold is the water in July in Jamestown?

In Jamestown, in July, the average water temperature is 67.5°F (19.7°C). For most, swimming in 67.5°F (19.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Jamestown have in July?

The average length of the day in July in Jamestown, Rhode Island, is 14.8h.

How long on average sun shines in July in Jamestown?

In Jamestown, Rhode Island, the average sunshine in July is 10.3h.

What is the month 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 UV index intensity in July in Jamestown?

In July, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in July - Jamestown, RI
  • Average high temperature in July: 78.3°F

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).

  • Average low temperature in July: 66.7°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).

Average humidity in July - Jamestown, RI
  • Average humidity in July: 80%

The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).

Average rainfall in July - Jamestown, RI
  • Average rainfall in July: 2.01"

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 in July - Jamestown, RI
  • Average rainfall days in July: 14.5 days

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 in July - Jamestown, RI
  • Average snowfall in July: 0"

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 in July - Jamestown, RI
  • Average snowfall days in July: 0 days

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 in July - Jamestown, RI
  • Average sea temperature in July: 67.4°F

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 in July / Average sunshine in July - Jamestown, RI
  • Average daylight in July: 14.8h

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

  • Average sunshine in July: 10.3h

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 in July - Jamestown, RI
  • Average UV index in July: 6

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