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October Weather in Ottumwa, United States

Last updated: June 24, 2025

In Ottumwa, United States, the average temperature in October hovers around 12°C (54°F). However, be prepared for a range, with minimums dipping to -4°C (25°F) and maximums soaring to 31°C (88°F). You'll also want to pack an umbrella, as 125 mm (4.9 in) of precipitation is expected over 11 days, paired with an average humidity level of 75%.

October Temperature in Ottumwa

In October in Ottumwa, the average temperature is 12°C (54°F). The maximum can reach 31°C (88°F) and the minimum can be as low as -4°C (25°F). Be prepared for a wide range of temperatures, making it essential to pack layered clothing for your travels.

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

The chart illustrates October temperature patterns in Ottumwa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ottumwa, October typically has an average temperature of 12°C (54°F), with highs reaching up to 31°C (88°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec242641506375787569544033
Data source: Temperature data for Ottumwa 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 Ottumwa

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

October Precipitation Trends in Ottumwa

The chart displays monthly precipitation patterns in Ottumwa, 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 Ottumwa, October typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec5050937715113774751291255340
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Ottumwa

In Ottumwa in October, humidity is 75%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that seeps into your bones, making it essential to layer your clothing for comfort while exploring.

October Average Humidity in Ottumwa

This chart illustrates the average monthly humidity levels in Ottumwa, 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 Ottumwa is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Ottumwa

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

Maximum UV Index Levels in Ottumwa for October

The chart shows the monthly maximum UV Index (UVI) for Ottumwa 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 Ottumwa typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098643
Data source: Ottumwa 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 Ottumwa Compares to Other Months

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

This table compares monthly weather conditions in Ottumwa, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (24°F)50 mm (2.0 inches)78%moderate
February Weather-3°C (27°F)50 mm (2.0 inches)80%moderate
March Weather5°C (41°F)93 mm (3.7 inches)77%high
April Weather10°C (51°F)77 mm (3.0 inches)77%very high
May Weather17°C (64°F)151 mm (5.9 inches)77%very high
June Weather24°C (75°F)137 mm (5.4 inches)81%extreme
July Weather25°C (78°F)74 mm (2.9 inches)81%very high
August Weather24°C (75°F)75 mm (3.0 inches)77%very high
September Weather21°C (69°F)129 mm (5.1 inches)73%very high
October Weather12°C (54°F)125 mm (4.9 inches)75%high
November Weather4°C (40°F)53 mm (2.1 inches)85%moderate
December Weather0°C (33°F)40 mm (1.6 inches)83%moderate

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