Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July is the month when Jamestown experiences its warmest temperatures, averaging a high of 80.8°F (27.1°C) and a low of 59.5°F (15.3°C).Heat index
The heat index value during July is evaluated at a hot 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
May through July, with an average relative humidity of 79%, are the least humid months.Rainfall
In Jamestown, Pennsylvania, in July, it is raining for 16.4 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 167.1 rainfall days, and 24.25" (616mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Jamestown, the average length of the day in July is 14h and 50min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:59 pm. On the last day of July, in Jamestown, sunrise is at 6:16 am and sunset at 8:39 pm EDT.
Sunshine
The months with the most sunshine in Jamestown, Pennsylvania, are July and August, with an average of 9.9h of sunshine.UV index
With an average maximum UV index of 6, July is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: During July, 6 as the daily maximum UV index converts into the following advice:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the hottest time of year in Jamestown?
What are the temperatures in Jamestown in July?
What are the least humid months in Jamestown?
What is the average humidity in July in Jamestown?
How many days does it rain in July in Jamestown?
When it does not snow in Jamestown?
How many hours of daylight does Jamestown have in July?
When is the sunrise / sunset in July in Jamestown?
What are the months with the most sunshine in Jamestown?
How long on average sun shines in July in Jamestown?
When is the highest UV index in Jamestown?
How high is the UV index in July in Jamestown?
Average temperature in July
Jamestown, PA
- Average high temperature in July: 80.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in July: 59.5°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in July
Jamestown, PA
- Average pressure in July: 29.97"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in July
Jamestown, PA
- Average wind speed in July: 5.1mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in July
Jamestown, PA
- Average humidity in July: 79%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in July
Jamestown, PA
- Average rainfall in July: 2.2"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in July
Jamestown, PA
- Average rainfall days in July: 16.4 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).
Average snowfall in July
Jamestown, PA
- Average snowfall in July: 0"
The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Jamestown, PA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (19.9 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, PA
- Average daylight in July: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in July
Jamestown, PA
- Average sunshine days in July: 11.9 days
The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in July
Jamestown, PA
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Jamestown, PA
- Average cloud cover in July: 37
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in July
Jamestown, PA
- Average visibility in July: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
Jamestown, Pennsylvania, USA
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