July Weather in Ottumwa, United States

Last updated: June 24, 2025

In Ottumwa, United States, the average temperature in July hovers around a pleasant 25°C (78°F), with minimums dipping to 14°C (58°F) and maximums soaring to 37°C (99°F). Expect to encounter approximately 74 mm (2.9 in) of precipitation spread over 8 days, accompanied by an average humidity of 81%. Enjoy the vibrant weather while preparing for the occasional shower!

July Temperature in Ottumwa

In July in Ottumwa, the average temperature is 25°C (78°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 14°C (58°F). This pleasant weather makes it an ideal time for travelers to explore the vibrant surroundings and enjoy outdoor activities.

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

The chart illustrates July 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, July typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 14°C (58°F).

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

July Precipitation in Ottumwa

In Ottumwa in July, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

July Precipitation Trends in Ottumwa

The chart displays monthly precipitation patterns in Ottumwa, 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 Ottumwa, July typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in Ottumwa

In Ottumwa in July humidity is 81%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities less comfortable and requiring frequent breaks to stay hydrated.

July Average Humidity in Ottumwa

This chart illustrates the average monthly humidity levels in Ottumwa, 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 Ottumwa is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Ottumwa

In Ottumwa in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Ottumwa.

Maximum UV Index Levels in Ottumwa for July

The chart shows the monthly maximum UV Index (UVI) for Ottumwa 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 Ottumwa typically reaches 10, which falls under the very high exposure category.

Data source: Ottumwa 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 Ottumwa Compares to Other Months

Weather in Ottumwa varies notably across the year, with each month offering distinct climate conditions. This page compares July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
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 Weather	5°C (41°F)	93 mm (3.7 inches)	77%	high
April Weather	10°C (51°F)	77 mm (3.0 inches)	77%	very high
May Weather	17°C (64°F)	151 mm (5.9 inches)	77%	very high
June Weather	24°C (75°F)	137 mm (5.4 inches)	81%	extreme
July Weather	25°C (78°F)	74 mm (2.9 inches)	81%	very high
August Weather	24°C (75°F)	75 mm (3.0 inches)	77%	very high
September Weather	21°C (69°F)	129 mm (5.1 inches)	73%	very high
October Weather	12°C (54°F)	125 mm (4.9 inches)	75%	high
November Weather	4°C (40°F)	53 mm (2.1 inches)	85%	moderate
December Weather	0°C (33°F)	40 mm (1.6 inches)	83%	moderate