July Weather in Dover, United States

Last updated: June 24, 2025

In Dover, United States, the average temperature in July hovers around 21°C (70°F), with extremes ranging from a cool 9°C (49°F) to a sweltering 40°C (105°F). Expect minimal rainfall, totaling just 8 mm (0.3 in) over 2 days, but prepare for a sticky atmosphere with an average humidity of 82%.

July Temperature in Dover

In July in Dover, the average temperature is 21°C (70°F). Maximums can reach 40°C (105°F), and minimums can be as low as 9°C (49°F). Travelers should prepare for warm days and cooler nights, ensuring they pack suitable clothing for varying temperatures.

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

The chart illustrates July temperature patterns in Dover, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dover, July typically has an average temperature of 21°C (70°F), with highs reaching up to 40°C (105°F) and lows dropping to around 9°C (49°F).

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

July Precipitation in Dover

In Dover in July, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

July Precipitation Trends in Dover

The chart displays monthly precipitation patterns in Dover, 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 Dover, July typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 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 Dover

In Dover in July, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

July Average Humidity in Dover

This chart illustrates the average monthly humidity levels in Dover, 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 Dover is approximately 82%, 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 Dover

In Dover in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Dover.

Maximum UV Index Levels in Dover for July

The chart shows the monthly maximum UV Index (UVI) for Dover 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 Dover typically reaches 9, which falls under the very high exposure category.

Data source: Dover 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 Dover Compares to Other Months

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

This table compares monthly weather conditions in Dover, 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)	118 mm (4.6 inches)	95%	low
February Weather	-2°C (29°F)	115 mm (4.5 inches)	93%	moderate
March Weather	2°C (36°F)	89 mm (3.5 inches)	91%	high
April Weather	6°C (43°F)	83 mm (3.3 inches)	88%	high
May Weather	11°C (53°F)	59 mm (2.3 inches)	83%	very high
June Weather	16°C (60°F)	36 mm (1.4 inches)	80%	very high
July Weather	21°C (70°F)	8 mm (0.3 inches)	82%	very high
August Weather	22°C (71°F)	27 mm (1.1 inches)	71%	very high
September Weather	16°C (61°F)	58 mm (2.3 inches)	71%	high
October Weather	9°C (48°F)	106 mm (4.2 inches)	85%	moderate
November Weather	4°C (39°F)	132 mm (5.2 inches)	90%	moderate
December Weather	1°C (33°F)	145 mm (5.7 inches)	96%	low