July weather forecastJamestown, NY
July
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 14h and 54min
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: 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: 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: 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: 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).
