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

April weather forecast and climate
Jamestown, RI

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).

Temperature

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). In Jamestown, Rhode Island, in April, the average low-temperature is 42.1°F (5.6°C).

Humidity

In Jamestown, the average relative humidity is 74%.

Rainfall

In Jamestown, in April, during 15.6 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, there are 148.1 rainfall days, and 29.65" (753mm) of precipitation is accumulated.

Snowfall

In Jamestown snow does not fall, June through October.

Ocean temperature

In Jamestown, the average water temperature is 44.4°F (6.9°C).
Note: Swimming in 44.4°F (6.9°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In April, the average length of the day in Jamestown is 13.4h.

Sunshine

In April, the average sunshine is 8.3h.

UV index

In Jamestown, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in April in Jamestown?

In April, in Jamestown, the average high-temperature is 53.2°F (11.8°C), and the average low-temperature is 42.1°F (5.6°C).

What is the average humidity in April in Jamestown?

In April, the average relative humidity is 74%.

How much does it rain in Jamestown in April?

In April, in Jamestown, the rain falls for 15.6 days. Throughout April, 2.95" (75mm) of precipitation is accumulated.

Does it snow in Jamestown in April?

In April, in Jamestown, it doesn't snow. March is the latest month when it typically snows.

When it does not snow in Jamestown?

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

How cold is the water in April in Jamestown?

In April, the average ocean temperature in Jamestown, Rhode Island, is 44.4°F (6.9°C). Swimming in 44.4°F (6.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Jamestown have in April?

In April, the average length of the day in Jamestown is 13.4h.

How many hours of sunshine does Jamestown have in April?

In Jamestown, the average sunshine in April is 8.3h.

What is the UV index intensity in April in Jamestown?

The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in April - Jamestown, RI
  • Average high temperature in April: 53.2°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 April: 42.1°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).

Average humidity in April - Jamestown, RI
  • Average humidity in April: 74%

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

Average rainfall in April - Jamestown, RI
  • Average rainfall in April: 2.95"

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 April - Jamestown, RI
  • Average rainfall days in April: 15.6 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 April - Jamestown, RI
  • Average snowfall in April: 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 April - Jamestown, RI
  • Average snowfall days in April: 0.2 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 April - Jamestown, RI
  • Average sea temperature in April: 44.5°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 April / Average sunshine in April - Jamestown, RI
  • Average daylight in April: 13.4h

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 April: 8.3h

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 April - Jamestown, RI
  • Average UV index in April: 3

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).