July weather forecastGrafton, NY
July
Weather in July
July, like June, in Grafton, New York, is a moderately hot summer month, with an average temperature fluctuating between 81°F (27.2°C) and 59°F (15°C).Temperature
July is the month when Grafton's temperatures reach their peak, with averages of 81°F (27.2°C) and lows of 59°F (15°C).Heat index
The heat index value for July is computed to be a tropical 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.Heat index determinations are made taking into account the shade and light air movements. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
The average relative humidity in July is 76%.Rainfall
In Grafton, during July, the rain falls for 15.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Grafton, there are 140.6 rainfall days, and 24.17" (614mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In July, the average length of the day is 14h and 58min.On the first day of July in Grafton, sunrise is at 5:19 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:15 pm EDT.
Sunshine
July has the most sunshine of the year in Grafton, with an average of 10.5h of sunshine.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In July, the UV index of 5 transforms into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Grafton, NY
- Average high temperature in July: 81°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in July: 59°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in July
Grafton, 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 (29.92"Hg).
Average wind speed in July
Grafton, NY
- Average wind speed in July: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in July
Grafton, NY
- Average humidity in July: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).
Average rainfall in July
Grafton, NY
- Average rainfall in July: 2.36"
The wettest months (with the highest rainfall) are May and October (2.52").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in July
Grafton, NY
- Average rainfall days in July: 15.3 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in July
Grafton, NY
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Grafton, NY
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Grafton, 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in July
Grafton, NY
- Average sunshine days in July: 14.3 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in July
Grafton, 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, February, March, October, November and December (UV index 2).
Average cloud cover in July
Grafton, NY
- Average cloud cover in July: 33
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in July
Grafton, NY
- Average visibility in July: 6mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
