July weather forecast
Jamestown, NY

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Weather in July

July is typically the warmest month in Jamestown with average high temperatures reaching 75.9°F (24.4°C). It marks the peak of summer, with the highest number of sunshine hours. Days turn out to be hot, complimented by relatively cooler nights, which are a trademark of Jamestown’s summer. July benefits from abundant daylight, often extending well into the evening. Occasionally, the city experiences thunderstorms which briefly interrupt the sun-drenched days.

Temperature

July is the warmest month in Jamestown, exhibiting average temperatures of 75.9°F (24.4°C) at the peak and 59.4°F (15.2°C) at the base.

Humidity

In July, the average relative humidity is 82%.

Rainfall

In July, in Jamestown, the rain falls for 18.3 days. Throughout July, 2.48" (63mm) of precipitation is accumulated. In Jamestown, during the entire year, the rain falls for 163.4 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

In Jamestown, snow does not fall in June through September.

Daylight

In July, the average length of the day is 14h and 53min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:56 pm. On the last day of July, sunrise is at 6:09 am and sunset at 8:36 pm EDT.

Sunshine

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

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In July, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Jamestown?

July is the warmest month in Jamestown, New York, with an average high-temperature of 75.9°F (24.4°C) and an average low-temperature of 59.4°F (15.2°C).

What is the usual temperature for Jamestown in July?

The average high-temperature, in July, in Jamestown, is 75.9°F (24.4°C), while the average low-temperature is 59.4°F (15.2°C).

What is the average humidity in July in Jamestown?

The average relative humidity in July is 82%.

How much does it rain in Jamestown in July?

In Jamestown, New York, in July, it is raining for 18.3 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in Jamestown?

In Jamestown, snow does not fall in June through September.

How many hours of daylight does Jamestown have in July?

In Jamestown, New York, the average day length in July is 14h and 53min.

What time are sunrise and sunset in July in Jamestown?

In July, on the first day of the month, sunrise is at 5:45 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:36 pm EDT.

What are the months with the most sunshine in Jamestown?

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

How many hours of sunshine does Jamestown have in July?

In July, the average sunshine duration 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.

How high is the UV index in July in Jamestown?

In July, the average daily maximum UV index in Jamestown, New York, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Jamestown, NY

Average temperature in July - Jamestown, NY
  • Average high temperature in July: 75.9°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 July: 59.4°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).

Average pressure in July
Jamestown, NY

Average pressure in July - Jamestown, NY
  • Average pressure in July: 29.96"Hg

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

Average wind speed in July
Jamestown, NY

Average wind speed in July - Jamestown, NY
  • Average wind speed in July: 6.4mph

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).

Average humidity in July
Jamestown, NY

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

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

Average rainfall in July
Jamestown, NY

Average rainfall in July - Jamestown, NY
  • Average rainfall in July: 2.48"

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

Average rainfall days in July
Jamestown, NY

Average rainfall days in July - Jamestown, NY
  • Average rainfall days in July: 18.3 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).

Average snowfall in July
Jamestown, NY

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

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

Average snowfall days in July
Jamestown, NY

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

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

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

Average daylight in July / Average sunshine in July - Jamestown, NY
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in July: 10h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

Average sunshine days in July
Jamestown, NY

Average sunshine days in July - Jamestown, NY
  • Average sunshine days in July: 10.3 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).

Average UV index in July
Jamestown, NY

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

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

Average cloud cover in July
Jamestown, NY

Average cloud cover in July - Jamestown, NY
  • Average cloud cover in July: 34

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

Average visibility in July
Jamestown, NY

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

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

Jamestown, New York, USA

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