July Weather in Londonderry, United States

Last updated: June 24, 2025

In Londonderry, United States, the average temperature in July is a pleasant 23°C (74°F). However, temperatures can range from a cool 12°C (55°F) to a sizzling 37°C (98°F). Expect some rain, with an average precipitation of 131 mm (5.2 in) over 12 days during the month, and enjoy the moderate humidity at around 67%. Whether you’re seeking warmth or a refreshing breeze, July in Londonderry offers a unique blend of climate!

July Temperature in Londonderry

In July, in Londonderry, the average temperature is 23°C (74°F). Maximums can reach 37°C (98°F), while minimums can drop as low as 12°C (55°F). This makes Londonderry a great destination for travelers seeking warm and pleasant weather during this time.

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

The chart illustrates July temperature patterns in Londonderry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Londonderry, July typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (98°F) and lows dropping to around 12°C (55°F).

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

July Precipitation in Londonderry

In Londonderry in July, the precipitation amount is 131 mm (5.2 in) spread over 12 days.

July Precipitation Trends in Londonderry

The chart displays monthly precipitation patterns in Londonderry, 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 Londonderry, July typically receives around 131 mm (5.2 inches) of precipitation spread over approximately 12 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 Londonderry

In Londonderry in July humidity is 67%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making outdoor exploration pleasant yet slightly sticky, perfect for leisurely strolls but requiring occasional breaks for hydration.

July Average Humidity in Londonderry

This chart illustrates the average monthly humidity levels in Londonderry, 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 Londonderry is approximately 67%, 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 Londonderry

In Londonderry 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 Londonderry.

Maximum UV Index Levels in Londonderry for July

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

Data source: Londonderry 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 Londonderry Compares to Other Months

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

This table compares monthly weather conditions in Londonderry, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	68 mm (2.7 inches)	86%	low
February Weather	0°C (32°F)	84 mm (3.3 inches)	84%	moderate
March Weather	3°C (37°F)	85 mm (3.3 inches)	82%	moderate
April Weather	9°C (48°F)	127 mm (5.0 inches)	80%	very high
May Weather	15°C (59°F)	82 mm (3.2 inches)	72%	very high
June Weather	20°C (69°F)	89 mm (3.5 inches)	72%	very high
July Weather	23°C (74°F)	131 mm (5.2 inches)	67%	very high
August Weather	23°C (74°F)	77 mm (3.0 inches)	66%	very high
September Weather	19°C (66°F)	73 mm (2.9 inches)	71%	high
October Weather	13°C (55°F)	128 mm (5.0 inches)	78%	high
November Weather	5°C (42°F)	95 mm (3.7 inches)	84%	moderate
December Weather	0°C (32°F)	121 mm (4.8 inches)	81%	low