July Weather in Onalaska, United States

Last updated: June 24, 2025

In July, the average temperature in Onalaska, United States is a comfortable 18°C (65°F), with lows dipping to 8°C (46°F) and highs soaring up to 35°C (96°F). Expect a light precipitation of 12 mm (0.5 in) spread over just 2 days, while the air remains pleasantly humid at an average of 82%. Enjoy the variety this month brings!

July Temperature in Onalaska

In July in Onalaska, the average temperature is 18°C (65°F). Maximums can reach 35°C (96°F) and minimums can be as low as 8°C (46°F). This makes Onalaska a great destination for travelers looking to enjoy mild weather with options for warmer or cooler activities.

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

The chart illustrates July temperature patterns in Onalaska, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onalaska, July typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (96°F) and lows dropping to around 8°C (46°F).

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

July Precipitation in Onalaska

In Onalaska in July, the precipitation amount is 12 mm (0.5 in) over the course of 2 days.

July Precipitation Trends in Onalaska

The chart displays monthly precipitation patterns in Onalaska, 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 Onalaska, July typically receives around 12 mm (0.5 inches) of precipitation spread over approximately 2 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 Onalaska

In Onalaska in July, humidity is 82%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can quickly leave travelers feeling fatigued and in need of frequent breaks to stay refreshed and hydrated.

July Average Humidity in Onalaska

This chart illustrates the average monthly humidity levels in Onalaska, 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 Onalaska is approximately 82%, 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 Onalaska

In Onalaska 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 Onalaska.

Maximum UV Index Levels in Onalaska for July

The chart shows the monthly maximum UV Index (UVI) for Onalaska 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 Onalaska typically reaches 9, which falls under the very high exposure category.

Data source: Onalaska 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 Onalaska Compares to Other Months

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

This table compares monthly weather conditions in Onalaska, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	188 mm (7.4 inches)	86%	low
February Weather	4°C (39°F)	196 mm (7.7 inches)	84%	moderate
March Weather	6°C (44°F)	151 mm (5.9 inches)	85%	moderate
April Weather	9°C (49°F)	129 mm (5.1 inches)	83%	high
May Weather	13°C (55°F)	80 mm (3.2 inches)	84%	very high
June Weather	15°C (60°F)	62 mm (2.4 inches)	84%	very high
July Weather	18°C (65°F)	12 mm (0.5 inches)	82%	very high
August Weather	19°C (66°F)	15 mm (0.6 inches)	73%	very high
September Weather	16°C (60°F)	86 mm (3.4 inches)	74%	high
October Weather	10°C (50°F)	149 mm (5.9 inches)	83%	moderate
November Weather	7°C (44°F)	187 mm (7.3 inches)	86%	moderate
December Weather	4°C (40°F)	202 mm (8.0 inches)	87%	low