July weather forecastWilliamstown, WV
July
Weather in July
Hang tight for the heat wave, as July presents the highest temperatures of the year, soaring from 63.1°F (17.3°C) to 85.6°F (29.8°C) in Williamstown, West Virginia. Despite the high temperature, no cessation of rainfall is observed, with an average 2.48" (63mm). This is a month of maximum UV exposure, along with extended daylight and sunshine hours. The summer blaze continues unabated into August but at marginally reduced intensity.Temperature
The warmest time of the year in Williamstown is July, with temperatures averaging a high of 85.6°F (29.8°C) and a low of 63.1°F (17.3°C).Heat index
The heat index value for July is computed to be a torrid 96.8°F (36°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.For clarity, heat index numbers account for light winds and areas under shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
The months with the lowest humidity are June through August, with an average relative humidity of 76%.Rainfall
In July, in Williamstown, the rain falls for 16.8 days. Throughout July, 2.48" (63mm) of precipitation is accumulated. In Williamstown, West Virginia, during the entire year, the rain falls for 156.1 days and collects up to 24.8" (630mm) of precipitation.Snowfall
In Williamstown, snow does not fall in May through September.Daylight
In July, the average length of the day in Williamstown is 14h and 37min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:56 pm. On the last day of July, in Williamstown, sunrise is at 6:25 am and sunset at 8:38 pm EDT.
Sunshine
In Williamstown, the average sunshine in July is 9.7h.UV index
The months with the highest UV index in Williamstown are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in July translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Williamstown, WV
- Average high temperature in July: 85.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in July: 63.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in July
Williamstown, WV
- Average pressure in July: 29.99"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in July
Williamstown, WV
- Average wind speed in July: 4.3mph
The windiest month (with the highest average wind speed) is February (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in July
Williamstown, WV
- Average humidity in July: 76%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are June, July and August (76%).
Average rainfall in July
Williamstown, WV
- Average rainfall in July: 2.48"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in July
Williamstown, WV
- Average rainfall days in July: 16.8 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (8.4 days).
Average snowfall in July
Williamstown, WV
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Williamstown, WV
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Williamstown, WV
- Average daylight in July: 14h and 36min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in July: 9h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in July
Williamstown, WV
- Average sunshine days in July: 11.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in July
Williamstown, WV
- Average UV index in July: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Williamstown, WV
- Average cloud cover in July: 39
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in July
Williamstown, WV
- Average visibility in July: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
