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October Weather in Waterloo, United States

Last updated: June 24, 2025

In October, the average temperature in Waterloo, United States is a comfortable 15°C (60°F). However, be prepared for a range of temperatures, as it can drop to a chilly -3°C (28°F) or rise to a warm 34°C (94°F). Expect about 109 mm (4.3 in) of precipitation over 11 days, and stay hydrated with an average humidity of 76%. Enjoy your time in this captivating destination!

October Temperature in Waterloo

In October in Waterloo, the average temperature is 15°C (60°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as -3°C (28°F). It's a month of diverse weather, so travelers should be prepared for varying conditions.

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

The chart illustrates October temperature patterns in Waterloo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waterloo, October typically has an average temperature of 15°C (60°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748566777807772594540
Data source: Temperature data for Waterloo 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 Waterloo

In Waterloo in October, the precipitation amount is 109 mm (4.3 in), occurring over a span of 11 days.

October Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, 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 Waterloo, October typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec79871361421498789123661097568
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Waterloo

In Waterloo in October humidity is 76%. With an average temperature of 15°C (60°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor activities a bit more challenging and urging you to stay hydrated while exploring the area.

October Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, 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 Waterloo 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 Waterloo

In Waterloo 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 Waterloo.

Maximum UV Index Levels in Waterloo for October

The chart shows the monthly maximum UV Index (UVI) for Waterloo 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 Waterloo typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110109753
Data source: Waterloo 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 Waterloo Compares to Other Months

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

This table compares monthly weather conditions in Waterloo, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)79 mm (3.1 inches)82%moderate
February Weather3°C (37°F)87 mm (3.4 inches)80%moderate
March Weather9°C (48°F)136 mm (5.4 inches)80%high
April Weather13°C (56°F)142 mm (5.6 inches)80%very high
May Weather20°C (68°F)149 mm (5.9 inches)82%very high
June Weather25°C (77°F)87 mm (3.4 inches)83%extreme
July Weather27°C (80°F)89 mm (3.5 inches)81%very high
August Weather25°C (77°F)123 mm (4.8 inches)80%very high
September Weather22°C (73°F)66 mm (2.6 inches)76%very high
October Weather15°C (60°F)109 mm (4.3 inches)76%high
November Weather7°C (45°F)75 mm (2.9 inches)85%moderate
December Weather4°C (40°F)68 mm (2.7 inches)86%moderate

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