July weather forecastWilliamsville, NY
July
Weather in July
July is a warm summer month in Williamsville, New York, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.2°F (16.8°C).Temperature
July, marked by an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 62.2°F (16.8°C), is the warmest month.Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 75%.Rainfall
July is the month with the most rainfall in Williamsville. Rain falls for 15.8 days and accumulates 1.61" (41mm) of precipitation.Snowfall
In Williamsville, snow does not fall in June through September.Daylight
In July, the average length of the day is 14h and 59min.On the first day of the month, sunrise is at 5:40 am and sunset at 8:57 pm. On the last day of July, sunrise is at 6:05 am and sunset at 8:36 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.UV index
With an average maximum UV index of 6, July is the month with the highest UV index in Williamsville. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In July, the UV index of 6 transforms into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Williamsville, NY
- Average high temperature in July: 79.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in July: 62.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in July
Williamsville, NY
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Williamsville, NY
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in July
Williamsville, NY
- Average humidity in July: 75%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall in July
Williamsville, NY
- Average rainfall in July: 1.61"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in July
Williamsville, NY
- Average rainfall days in July: 15.8 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in July
Williamsville, NY
- Average snowfall in July: 0"
The months with the highest snowfall are January and February (2.95").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Williamsville, NY
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Williamsville, NY
- Average daylight in July: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in July: 10h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in July
Williamsville, NY
- Average sunshine days in July: 13.2 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in July
Williamsville, NY
- Average UV index in July: 6
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in July
Williamsville, NY
- Average cloud cover in July: 32
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
Williamsville, NY
- Average visibility in July: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).





