October Weather in Londonderry, United States

Last updated: June 24, 2025

In October, the average temperature in Londonderry, United States is a cool 9°C (49°F). During this month, you can expect temperatures to range from a brisk -8°C (18°F) at their lowest to a warm 25°C (78°F) at their peak. With approximately 157 mm (6.2 in) of precipitation spread over 13 days, you'll likely encounter some rainy spells. The average humidity is quite high at 81%, adding to the overall comfort and freshness of the air.

October Temperature in Londonderry

In October in Londonderry, the average temperature is 9°C (49°F). The maximum can reach 25°C (78°F) and the minimum can be as low as -8°C (18°F). Prepare for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates October 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, October typically has an average temperature of 9°C (49°F), with highs reaching up to 25°C (78°F) and lows dropping to around -8°C (18°F).

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

October Precipitation in Londonderry

In Londonderry in October, the total precipitation amount is 157 mm (6.2 in) spread over 13 days.

October Precipitation Trends in Londonderry

The chart displays monthly precipitation patterns in Londonderry, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Londonderry, October typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Londonderry

In Londonderry in October humidity is 81%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill clinging to your skin, making outdoor explorations rather uncomfortable and potentially dreary for travelers.

October Average Humidity in Londonderry

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

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

October UV Index in Londonderry

In Londonderry in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Londonderry, you can refer to this Hourly UV Index in Londonderry.

Maximum UV Index Levels in Londonderry for October

The chart shows the monthly maximum UV Index (UVI) for Londonderry in October, 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 October, the maximum UV index in Londonderry typically reaches 6, which falls under the high exposure category.

Data source: Londonderry October 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 October 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 October’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 October’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