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October Weather in Mason City, United States

Last updated: June 24, 2025

In Mason City, United States, the average temperature in October hovers around 14°C (57°F). During this time, temperatures can range from a chilly -4°C (26°F) to a balmy 33°C (91°F). Expect 114 mm (4.5 in) of precipitation spread over 11 days, coupled with an average humidity of 82%.

October Temperature in Mason City

In October in Mason City, the average temperature is 14°C (57°F), with maximums reaching 33°C (91°F) and minimums dropping as low as -4°C (26°F). This varied climate means that travelers should be prepared for both warm days and chilly nights.

October Weather in Mason City: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Mason City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mason City, October typically has an average temperature of 14°C (57°F), with highs reaching up to 33°C (91°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec283143526575777470574135
Data source: Temperature data for Mason City 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 Mason City

In Mason City in October, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.

October Precipitation Trends in Mason City

The chart displays monthly precipitation patterns in Mason City, 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 Mason City, October typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec666812312015613611797681146353
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Mason City

In Mason City in October, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.

October Average Humidity in Mason City

This chart illustrates the average monthly humidity levels in Mason City, 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 Mason City is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Mason City

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

Maximum UV Index Levels in Mason City for October

The chart shows the monthly maximum UV Index (UVI) for Mason City 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 Mason City typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357810111098642
Data source: Mason City 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 Mason City Compares to Other Months

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

This table compares monthly weather conditions in Mason City, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)66 mm (2.6 inches)82%moderate
February Weather-1°C (31°F)67 mm (2.7 inches)83%moderate
March Weather6°C (43°F)123 mm (4.8 inches)84%high
April Weather11°C (52°F)120 mm (4.7 inches)85%very high
May Weather18°C (65°F)156 mm (6.1 inches)79%very high
June Weather24°C (75°F)136 mm (5.4 inches)82%extreme
July Weather25°C (78°F)117 mm (4.6 inches)80%very high
August Weather24°C (75°F)97 mm (3.8 inches)81%very high
September Weather21°C (71°F)68 mm (2.7 inches)80%very high
October Weather14°C (57°F)114 mm (4.5 inches)82%high
November Weather5°C (42°F)63 mm (2.5 inches)88%moderate
December Weather2°C (36°F)53 mm (2.1 inches)84%low

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