July weather forecast
Grafton, NY

Share

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.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest in Grafton?

July, with average temperatures reaching a high of 81°F (27.2°C) and a low of 59°F (15°C), is the warmest month in Grafton.

What is the temperature in July in Grafton?

During July, Grafton experiences an average high-temperature of 81°F (27.2°C) and a low-temperature of 59°F (15°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in July is computed to be 86°F (30°C).

What is the average humidity in July in Grafton?

In Grafton, New York, the average relative humidity in July is 76%.

How many days does it rain in July in Grafton?

In Grafton, New York, in July, it is raining for 15.3 days, with typically 2.36" (60mm) of accumulated precipitation.

When it does not snow in Grafton?

June through September are months without snowfall.

What is the average length of the day in July in Grafton?

In Grafton, the average day length in July is 14h and 58min.

What time are sunrise and sunset in July in Grafton?

In July, on the first day of the month, sunrise is at 5:19 am and sunset at 8:35 pm. On the last day of the month, in Grafton, New York, sunrise is at 5:45 am and sunset at 8:15 pm EDT.

What month has the most sunshine in Grafton?

July has the most sunshine of the year in Grafton, with an average of 10.5h of sunshine.

How many hours of sunshine does Grafton have in July?

In Grafton, New York, the average sunshine duration in July is 10.5h.

What are the months with the highest UV index in Grafton?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index reading in July in Grafton?

The average daily maximum UV index in July in Grafton is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Grafton, NY

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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 / 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 3min

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 - 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 - 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 - 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 - 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).

Grafton, New York, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location