July Weather in Londonderry, United States

Last updated: June 24, 2025

In July, the average temperature in Londonderry, United States hovers around 21°C (69°F), with a range that can dip to a chilly 8°C (47°F) and soar to a sweltering 36°C (97°F). Expect about 163 mm (6.4 in) of precipitation spread across 15 days, contributing to an average humidity level of 66%.

July Temperature in Londonderry

In July in Londonderry, the average temperature is 21°C (69°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 8°C (47°F). This climate offers a pleasant experience for travelers, making it an ideal time for outdoor activities and exploration.

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 21°C (69°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°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 total precipitation amount is 163 mm (6.4 in) spread over 15 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 163 mm (6.4 inches) of precipitation spread over approximately 15 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 66%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, making it a bit sticky, but still comfortable for traveling as long as you stay hydrated and take breaks in the shade.

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 66%, 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	-6°C (21°F)	78 mm (3.1 inches)	89%	moderate
February Weather	-5°C (24°F)	91 mm (3.6 inches)	88%	moderate
March Weather	-1°C (31°F)	78 mm (3.1 inches)	86%	high
April Weather	6°C (43°F)	131 mm (5.2 inches)	84%	very high
May Weather	13°C (55°F)	103 mm (4.0 inches)	76%	very high
June Weather	18°C (64°F)	114 mm (4.5 inches)	72%	very high
July Weather	21°C (69°F)	163 mm (6.4 inches)	66%	very high
August Weather	20°C (67°F)	120 mm (4.7 inches)	64%	very high
September Weather	16°C (61°F)	95 mm (3.7 inches)	72%	high
October Weather	9°C (49°F)	157 mm (6.2 inches)	81%	high
November Weather	1°C (35°F)	107 mm (4.2 inches)	87%	moderate
December Weather	-4°C (26°F)	105 mm (4.1 inches)	84%	low