July Weather in Grafton, United States

Last updated: June 24, 2025

In Grafton, United States, the average temperature in July is a warm 26°C (79°F). Expect a range with minimums dropping to 15°C (60°F) and maximums soaring up to 37°C (100°F). During this period, precipitation averages around 94 mm (3.7 in) spread over 9 days, and the air feels quite humid with an average humidity of 81%. Stay prepared for the warmth and occasional rain!

July Temperature in Grafton

In July in Grafton, the average temperature is 26°C (79°F). Maximums can reach 37°C (100°F), and minimums can be as low as 15°C (60°F). It’s an ideal time to enjoy outdoor activities, but be sure to pack for both the heat and cooler evenings.

July Weather in Grafton: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Grafton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grafton, July typically has an average temperature of 26°C (79°F), with highs reaching up to 37°C (100°F) and lows dropping to around 15°C (60°F).

Data source: Temperature data for Grafton generated using information from the Copernicus Climate Change Service.

July Precipitation in Grafton

In Grafton in July, the precipitation amount reaches 94 mm (3.7 in) over the course of 9 days.

July Precipitation Trends in Grafton

The chart displays monthly precipitation patterns in Grafton, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Grafton, July typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Grafton

In Grafton in July, humidity is 81%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor adventures stickier and more draining, yet still vibrant with life—perfect for exploring local culture, but you'll want to take frequent breaks and stay hydrated.

July Average Humidity in Grafton

This chart illustrates the average monthly humidity levels in Grafton, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Grafton is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Grafton

In Grafton in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Grafton.

Maximum UV Index Levels in Grafton for July

The chart shows the monthly maximum UV Index (UVI) for Grafton in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Grafton typically reaches 11, which falls under the extreme exposure category.

Data source: Grafton July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Grafton Compares to Other Months

Weather in Grafton varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Grafton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Grafton, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	70 mm (2.8 inches)	82%	moderate
February Weather	1°C (34°F)	77 mm (3.0 inches)	80%	moderate
March Weather	8°C (46°F)	131 mm (5.1 inches)	80%	high
April Weather	12°C (55°F)	119 mm (4.7 inches)	80%	very high
May Weather	19°C (67°F)	147 mm (5.8 inches)	82%	very high
June Weather	25°C (76°F)	93 mm (3.6 inches)	83%	extreme
July Weather	26°C (79°F)	94 mm (3.7 inches)	81%	extreme
August Weather	24°C (76°F)	123 mm (4.9 inches)	80%	very high
September Weather	22°C (72°F)	66 mm (2.6 inches)	76%	very high
October Weather	15°C (59°F)	100 mm (3.9 inches)	76%	high
November Weather	6°C (44°F)	66 mm (2.6 inches)	85%	moderate
December Weather	3°C (38°F)	51 mm (2.0 inches)	86%	moderate