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July Weather in Waterloo, United States

Last updated: June 24, 2025

In July, the average temperature in Waterloo, United States reaches a pleasant 23°C (73°F). However, temperatures can vary significantly, with a minimum of 11°C (53°F) and a maximum of 35°C (95°F). Expect some rain, as 153 mm (6.0 in) of precipitation typically falls over 15 days, combined with an average humidity of 78%.

July Temperature in Waterloo

In July in Waterloo, the average temperature is 23°C (73°F). Maximum temperatures can reach 35°C (95°F), while the minimum can drop to as low as 11°C (53°F). This pleasant climate makes Waterloo an ideal destination for travelers seeking a comfortable and enjoyable experience.

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

The chart illustrates July 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, July typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (95°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935465867737164544032
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.

July Precipitation in Waterloo

In Waterloo in July, the precipitation amount is 153 mm (6.0 in) over the course of 15 days.

July Precipitation Trends in Waterloo

The chart displays monthly precipitation patterns in Waterloo, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Waterloo, July typically receives around 153 mm (6.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec898881119116861531088215497101
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Waterloo

In Waterloo in July, humidity is 78%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor activities a little challenging but still enjoyable for travelers who appreciate a tropical atmosphere.

July Average Humidity in Waterloo

This chart illustrates the average monthly humidity levels in Waterloo, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Waterloo is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Waterloo

In Waterloo in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Waterloo.

Maximum UV Index Levels in Waterloo for July

The chart shows the monthly maximum UV Index (UVI) for Waterloo in July, 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 July, the maximum UV index in Waterloo typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24681010997632
Data source: Waterloo July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)89 mm (3.5 inches)90%low
February Weather-2°C (29°F)88 mm (3.5 inches)90%moderate
March Weather2°C (35°F)81 mm (3.2 inches)87%high
April Weather8°C (46°F)119 mm (4.7 inches)88%very high
May Weather14°C (58°F)116 mm (4.6 inches)82%very high
June Weather20°C (67°F)86 mm (3.4 inches)79%very high
July Weather23°C (73°F)153 mm (6.0 inches)78%very high
August Weather22°C (72°F)108 mm (4.3 inches)76%very high
September Weather18°C (65°F)82 mm (3.2 inches)78%high
October Weather12°C (55°F)154 mm (6.1 inches)84%high
November Weather4°C (40°F)97 mm (3.8 inches)89%moderate
December Weather0°C (33°F)101 mm (4.0 inches)86%low

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