August weather forecast and climate
Jamestown, NY

Weather in August

August, the last month of the summer, in Jamestown, is another warm month, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 74.7°F (23.7°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still warm 74.7°F (23.7°C). In Jamestown, in August, the average low-temperature is 58.1°F (14.5°C).

Humidity

In August, the average relative humidity is 82%.

Rainfall

In Jamestown, in August, during 16.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Jamestown, during the entire year, the rain falls for 163.4 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day in Jamestown is 13.8h.

Sunshine

Months with the most sunshine are July and August, with an average of 10h of sunshine.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in August in Jamestown?

In Jamestown, in August, the average high-temperature is 74.7°F (23.7°C), and the average low-temperature is 58.1°F (14.5°C).

What is the average humidity in August in Jamestown?

In August, the average relative humidity in Jamestown is 82%.

How much does it rain in Jamestown in August?

In Jamestown, New York, in August, during 16.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When it does not snow in Jamestown?

In Jamestown snow does not fall in June through September.

What is the average length of the day in August in Jamestown?

In August, the average length of the day in Jamestown, New York, is 13.8h.

What are the months with the most sunshine in Jamestown?

July and August, with an average of 10h of sunshine, are months with the most sunshine.

How long on average sun shines in August in Jamestown?

The average sunshine in August is 10h.

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

May through August, with an average maximum UV index of 5, are months with the highest UV index in Jamestown, New York.

How high is the UV index in August in Jamestown?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in August
Jamestown, NY

Average temperature in August - Jamestown, NY
  • Average high temperature in August: 74.7°F

The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in August: 58.1°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

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Average pressure in August
Jamestown, NY

Average pressure in August - Jamestown, NY
  • Average pressure in August: 29.98"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in August
Jamestown, NY

Average wind speed in August - Jamestown, NY
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in August
Jamestown, NY

Average humidity in August - Jamestown, NY
  • Average humidity in August: 82%

The month with the highest relative humidity is February (89%).
Months with the lowest relative humidity are April, May and September (81%).

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Average rainfall in August
Jamestown, NY

Average rainfall in August - Jamestown, NY
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in August
Jamestown, NY

Average rainfall days in August - Jamestown, NY
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (6.9 days).

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Average snowfall in August
Jamestown, NY

Average snowfall in August - Jamestown, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is December (7.68").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Jamestown, NY

Average snowfall days in August - Jamestown, NY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (20.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Jamestown, NY

Average daylight in August / Average sunshine in August - Jamestown, NY
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 10h

Months with the most sunshine are July and August (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 2.3h).

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Average sunshine days in August
Jamestown, NY

Average sunshine days in August - Jamestown, NY
  • Average sunshine days in August: 10.8 days

The month with the most sunshine days is September (12.5 days).
The month with the least sunshine days is January (5.6 days).

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Average UV index in August
Jamestown, NY

Average UV index in August - Jamestown, NY
  • Average UV index in August: 5

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Jamestown, NY

Average cloud cover in August - Jamestown, NY
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in August
Jamestown, NY

Average visibility in August - Jamestown, NY
  • Average visibility in August: 6mi

Months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (4mi).

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