October Weather in Mason City, United States

Last updated: June 24, 2025

In October, the average temperature in Mason City, United States hovers around 10°C (49°F). However, temperatures can swing dramatically, with lows reaching -9°C (17°F) and highs soaring up to 30°C (87°F). Expect about 112 mm (4.4 in) of precipitation over 10 days, and brace yourself for a high average humidity of 80%.

October Temperature in Mason City

In October in Mason City, the average temperature is 10°C (49°F). Maximum temperatures can reach 30°C (87°F), while minimums can drop as low as -9°C (17°F). Be prepared for a wide range of temperatures when traveling during this time.

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 10°C (49°F), with highs reaching up to 30°C (87°F) and lows dropping to around -9°C (17°F).

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

October Precipitation in Mason City

In Mason City in October, the total precipitation amount is 112 mm (4.4 in) over the course of 10 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 112 mm (4.4 inches) of precipitation spread over approximately 10 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 Mason City

In Mason City in October, humidity is 80%. With an average temperature of 10°C (49°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and leaving you clammy as you navigate the sights.

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 80%, 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 Mason City

In Mason City 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 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 5, which falls under the moderate exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (19°F)	36 mm (1.4 inches)	82%	moderate
February Weather	-8°C (18°F)	47 mm (1.9 inches)	84%	moderate
March Weather	1°C (35°F)	71 mm (2.8 inches)	80%	moderate
April Weather	7°C (45°F)	80 mm (3.1 inches)	81%	very high
May Weather	15°C (60°F)	159 mm (6.3 inches)	74%	very high
June Weather	22°C (72°F)	132 mm (5.2 inches)	80%	extreme
July Weather	23°C (74°F)	98 mm (3.8 inches)	80%	very high
August Weather	21°C (71°F)	118 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	108 mm (4.2 inches)	75%	very high
October Weather	10°C (49°F)	112 mm (4.4 inches)	80%	moderate
November Weather	1°C (35°F)	49 mm (1.9 inches)	87%	moderate
December Weather	-3°C (27°F)	35 mm (1.4 inches)	83%	moderate