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October Weather in Upper Alton, United States

Last updated: June 24, 2025

In October, the average temperature in Upper Alton, United States hovers around 15°C (59°F). Expect to experience a range with minimums plunging to -3°C (26°F) and maximums soaring up to 33°C (92°F). Be prepared for 100 mm (3.9 in) of precipitation spread over 11 days, contributing to an average humidity of 76%.

October Temperature in Upper Alton

In October in Upper Alton, 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 Upper Alton an exciting destination for travelers, offering both warm days and cool nights for a variety of activities.

October Weather in Upper Alton: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Upper Alton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Upper Alton, 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).
JanFebMarAprMayJunJulAugSepOctNovDec313446546776797672584338
Data source: Temperature data for Upper Alton 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 Upper Alton

In Upper Alton in October, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

October Precipitation Trends in Upper Alton

The chart displays monthly precipitation patterns in Upper Alton, 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 Upper Alton, October typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec737813212315010196119671007054
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Upper Alton

In Upper Alton 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 Upper Alton

This chart illustrates the average monthly humidity levels in Upper Alton, 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 Upper Alton 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 Upper Alton

In Upper Alton 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 Upper Alton, you can refer to this Hourly UV Index in Upper Alton.

Maximum UV Index Levels in Upper Alton for October

The chart shows the monthly maximum UV Index (UVI) for Upper Alton 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 Upper Alton typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111199643
Data source: Upper Alton 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 Upper Alton Compares to Other Months

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

This table compares monthly weather conditions in Upper Alton, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)73 mm (2.9 inches)82%moderate
February Weather1°C (35°F)78 mm (3.1 inches)80%moderate
March Weather8°C (46°F)132 mm (5.2 inches)80%high
April Weather12°C (55°F)123 mm (4.9 inches)80%very high
May Weather19°C (67°F)150 mm (5.9 inches)82%very high
June Weather25°C (77°F)101 mm (4.0 inches)83%extreme
July Weather26°C (79°F)96 mm (3.8 inches)81%extreme
August Weather24°C (76°F)119 mm (4.7 inches)80%very high
September Weather22°C (72°F)67 mm (2.6 inches)76%very high
October Weather15°C (59°F)100 mm (3.9 inches)76%high
November Weather6°C (44°F)70 mm (2.8 inches)85%moderate
December Weather3°C (38°F)54 mm (2.1 inches)86%moderate

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