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October Weather in Union, United States

Last updated: June 24, 2025

In Union, United States, the average temperature in October hovers around 15°C (59°F). During this time, temperatures can vary significantly, ranging from a chilly -3°C (26°F) to a warm 33°C (92°F). Expect about 108 mm (4.2 in) of precipitation over approximately 11 days, with an average humidity level of 76%. Be prepared for a variety of weather conditions!

October Temperature in Union

In October in Union, the average temperature is 15°C (59°F). The maximum can reach 33°C (92°F), and the minimum can be as low as -3°C (26°F). This wide temperature range makes Union an exciting destination for travelers, offering both warm days and cool nights for a variety of activities.

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 15°C (59°F), with highs reaching up to 33°C (92°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556676797672594539
Data source: Temperature data for Union generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Union

In Union in October, the precipitation amount is 108 mm (4.2 in), distributed over 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 108 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec758012612615289100145551086955
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Union

In Union in October humidity is 76%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities less enjoyable and often leading to a quick sense of fatigue while traveling.

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 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)75 mm (2.9 inches)82%moderate
February Weather2°C (36°F)80 mm (3.1 inches)80%moderate
March Weather8°C (47°F)126 mm (5.0 inches)80%high
April Weather13°C (55°F)126 mm (5.0 inches)80%very high
May Weather19°C (66°F)152 mm (6.0 inches)82%very high
June Weather24°C (76°F)89 mm (3.5 inches)83%extreme
July Weather26°C (79°F)100 mm (3.9 inches)81%extreme
August Weather24°C (76°F)145 mm (5.7 inches)80%very high
September Weather22°C (72°F)55 mm (2.2 inches)76%very high
October Weather15°C (59°F)108 mm (4.2 inches)76%high
November Weather7°C (45°F)69 mm (2.7 inches)85%moderate
December Weather4°C (39°F)54 mm (2.1 inches)86%moderate

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