October Weather in Derry, United States

Last updated: June 24, 2025

In Derry, United States, the average temperature in October is 12°C (54°F). This month can bring a range of temperatures, with a minimum dipping to -3°C (26°F) and a maximum soaring to 29°C (84°F). Expect precipitation of about 125 mm (4.9 in) over 11 days, contributing to an average humidity of 78%. Prepare accordingly for a mix of cool, warm, and possibly wet weather!

October Temperature in Derry

In October in Derry, the average temperature is 12°C (54°F), with maximums reaching 29°C (84°F) and minimums dropping as low as -3°C (26°F). This variation makes it essential for travelers to pack accordingly, ensuring they're prepared for both warm and cool conditions.

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

The chart illustrates October temperature patterns in Derry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Derry, October typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around -3°C (26°F).

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

October Precipitation in Derry

In Derry in October, the precipitation amount is 125 mm (4.9 in) over the course of 11 days.

October Precipitation Trends in Derry

The chart displays monthly precipitation patterns in Derry, 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 Derry, October typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Derry

In Derry in October humidity is 78%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill settling in, making travel a bit uncomfortable as the air clings to your skin, leaving you feeling cooler than the thermometer suggests.

October Average Humidity in Derry

This chart illustrates the average monthly humidity levels in Derry, 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 Derry is approximately 78%, 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 Derry

In Derry in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Derry.

Maximum UV Index Levels in Derry for October

The chart shows the monthly maximum UV Index (UVI) for Derry 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 Derry typically reaches 5, which falls under the moderate exposure category.

Data source: Derry 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 Derry Compares to Other Months

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

This table compares monthly weather conditions in Derry, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (28°F)	70 mm (2.7 inches)	86%	moderate
February Weather	-1°C (30°F)	84 mm (3.3 inches)	84%	moderate
March Weather	2°C (36°F)	82 mm (3.2 inches)	82%	moderate
April Weather	8°C (47°F)	128 mm (5.0 inches)	80%	very high
May Weather	15°C (58°F)	77 mm (3.0 inches)	72%	very high
June Weather	20°C (69°F)	89 mm (3.5 inches)	72%	very high
July Weather	23°C (74°F)	135 mm (5.3 inches)	67%	very high
August Weather	23°C (73°F)	75 mm (2.9 inches)	66%	very high
September Weather	19°C (66°F)	72 mm (2.8 inches)	71%	high
October Weather	12°C (54°F)	125 mm (4.9 inches)	78%	moderate
November Weather	4°C (40°F)	99 mm (3.9 inches)	84%	moderate
December Weather	-1°C (31°F)	122 mm (4.8 inches)	81%	low