July Weather in Sullivan, United States

Last updated: June 24, 2025

In July, the average temperature in Sullivan, United States is a warm 26°C (79°F), with daily variations ranging from a cool 15°C (59°F) to a scorching 39°C (102°F). Prepare for 100 mm (3.9 in) of precipitation spread over 11 days, contributing to the region's 81% average humidity.

July Temperature in Sullivan

In July in Sullivan, the average temperature is 26°C (79°F). Maximum can reach 39°C (102°F) and minimum can be as low as 15°C (59°F). Be prepared for a warm climate with potential for heatwaves, making it a great time for beach activities or exploring shaded areas.

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

The chart illustrates July temperature patterns in Sullivan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sullivan, July typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (102°F) and lows dropping to around 15°C (59°F).

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

July Precipitation in Sullivan

In Sullivan in July, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

July Precipitation Trends in Sullivan

The chart displays monthly precipitation patterns in Sullivan, 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 Sullivan, July typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 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 Sullivan

In Sullivan 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 Sullivan

This chart illustrates the average monthly humidity levels in Sullivan, 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 Sullivan 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 Sullivan

In Sullivan 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 Sullivan.

Maximum UV Index Levels in Sullivan for July

The chart shows the monthly maximum UV Index (UVI) for Sullivan 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 Sullivan typically reaches 11, which falls under the extreme exposure category.

Data source: Sullivan 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 Sullivan Compares to Other Months

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

This table compares monthly weather conditions in Sullivan, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	76 mm (3.0 inches)	82%	moderate
February Weather	2°C (36°F)	84 mm (3.3 inches)	80%	moderate
March Weather	8°C (48°F)	128 mm (5.1 inches)	80%	high
April Weather	13°C (55°F)	132 mm (5.2 inches)	80%	very high
May Weather	19°C (66°F)	165 mm (6.5 inches)	82%	very high
June Weather	24°C (76°F)	87 mm (3.4 inches)	83%	extreme
July Weather	26°C (79°F)	100 mm (3.9 inches)	81%	extreme
August Weather	24°C (76°F)	126 mm (5.0 inches)	80%	very high
September Weather	22°C (72°F)	53 mm (2.1 inches)	76%	very high
October Weather	15°C (59°F)	107 mm (4.2 inches)	76%	high
November Weather	7°C (45°F)	68 mm (2.7 inches)	85%	moderate
December Weather	4°C (40°F)	56 mm (2.2 inches)	86%	moderate