October Weather in Union, United States

Last updated: June 24, 2025

In Union, United States, the average temperature in October hovers around 6°C (44°F). During this time, temperatures can dip as low as -13°C (9°F) or soar to a maximum of 25°C (78°F). Expect around 67 mm (2.6 in) of precipitation across 11 days, accompanied by an average humidity level of 75%.

October Temperature in Union

In October in Union, the average temperature is 6°C (44°F), with maximums reaching 25°C (78°F) and minimums dropping as low as -13°C (9°F). This wide range of temperatures suggests that travelers should be prepared for both warm and chilly conditions during their visit.

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

The chart illustrates October temperature patterns in Union, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union, October typically has an average temperature of 6°C (44°F), with highs reaching up to 25°C (78°F) and lows dropping to around -13°C (9°F).

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

October Precipitation in Union

In Union in October, the total precipitation amount is 67 mm (2.6 in) over the course of 11 days.

October Precipitation Trends in Union

The chart displays monthly precipitation patterns in Union, 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 Union, October typically receives around 67 mm (2.6 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 Union

In Union in October humidity is 75%. With an average temperature of 6°C (44°F), this humidity feels like a chilly, damp blanket wrapping around you, making travel less enjoyable as the moisture clings to your skin and seeps into your clothes, leaving you feeling uncomfortable and clammy.

October Average Humidity in Union

This chart illustrates the average monthly humidity levels in Union, 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 Union is approximately 75%, 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 Union

In Union 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 Union.

Maximum UV Index Levels in Union for October

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

Data source: Union 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 Union Compares to Other Months

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

This table compares monthly weather conditions in Union, 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 (27°F)	86 mm (3.4 inches)	86%	moderate
February Weather	-3°C (27°F)	132 mm (5.2 inches)	86%	moderate
March Weather	2°C (36°F)	89 mm (3.5 inches)	85%	high
April Weather	5°C (42°F)	83 mm (3.3 inches)	83%	very high
May Weather	10°C (49°F)	75 mm (2.9 inches)	77%	very high
June Weather	14°C (58°F)	41 mm (1.6 inches)	81%	very high
July Weather	20°C (68°F)	2 mm (0.1 inches)	76%	extreme
August Weather	19°C (67°F)	16 mm (0.6 inches)	60%	very high
September Weather	14°C (57°F)	33 mm (1.3 inches)	58%	very high
October Weather	6°C (44°F)	67 mm (2.6 inches)	75%	moderate
November Weather	2°C (35°F)	76 mm (3.0 inches)	85%	moderate
December Weather	-2°C (28°F)	94 mm (3.7 inches)	87%	low