October Weather in Northwest Harwinton, United States

Last updated: June 24, 2025

In October, the average temperature in Northwest Harwinton, United States hovers around 13°C (56°F). Be prepared for a wide range, as temperatures can dip to a brisk -5°C (24°F) or soar to a warm 30°C (86°F). Expect about 152 mm (6.0 in) of precipitation over approximately 12 days, contributing to an average humidity level of 74%.

October Temperature in Northwest Harwinton

In October in Northwest Harwinton, the average temperature is 13°C (56°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop to as low as -5°C (24°F). Expect a wide range of temperatures, so be sure to pack accordingly for your travels.

October Weather in Northwest Harwinton: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Northwest Harwinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Northwest Harwinton, October typically has an average temperature of 13°C (56°F), with highs reaching up to 30°C (86°F) and lows dropping to around -5°C (24°F).

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

October Precipitation in Northwest Harwinton

In Northwest Harwinton in October, the total precipitation amount is 152 mm (6.0 in), which falls over the course of 12 days.

October Precipitation Trends in Northwest Harwinton

The chart displays monthly precipitation patterns in Northwest Harwinton, 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 Northwest Harwinton, October typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 12 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 Northwest Harwinton

In Northwest Harwinton in October humidity is 74%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, especially for travelers unaccustomed to such conditions.

October Average Humidity in Northwest Harwinton

This chart illustrates the average monthly humidity levels in Northwest Harwinton, 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 Northwest Harwinton is approximately 74%, 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 Northwest Harwinton

In Northwest Harwinton 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 Northwest Harwinton, you can refer to this Hourly UV Index in Northwest Harwinton.

Maximum UV Index Levels in Northwest Harwinton for October

The chart shows the monthly maximum UV Index (UVI) for Northwest Harwinton 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 Northwest Harwinton typically reaches 6, which falls under the high exposure category.

Data source: Northwest Harwinton 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 Northwest Harwinton Compares to Other Months

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

This table compares monthly weather conditions in Northwest Harwinton, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	73 mm (2.9 inches)	84%	moderate
February Weather	0°C (32°F)	93 mm (3.7 inches)	82%	moderate
March Weather	3°C (38°F)	91 mm (3.6 inches)	81%	high
April Weather	9°C (48°F)	136 mm (5.3 inches)	78%	very high
May Weather	15°C (59°F)	120 mm (4.7 inches)	69%	very high
June Weather	20°C (69°F)	103 mm (4.1 inches)	69%	very high
July Weather	23°C (74°F)	162 mm (6.4 inches)	62%	very high
August Weather	22°C (73°F)	107 mm (4.2 inches)	65%	very high
September Weather	19°C (66°F)	122 mm (4.8 inches)	68%	very high
October Weather	13°C (56°F)	152 mm (6.0 inches)	74%	high
November Weather	5°C (42°F)	95 mm (3.7 inches)	82%	moderate
December Weather	1°C (33°F)	123 mm (4.9 inches)	80%	low