July Weather in Onalaska, United States

Last updated: June 24, 2025

In July, the average temperature in Onalaska, United States is a warm 28°C (84°F). You can expect minimums around 21°C (70°F) and maximums soaring up to 40°C (105°F). With 90 mm (3.5 in) of precipitation spread over 14 days, it's wise to be prepared for occasional showers. The air will feel quite humid, with an average humidity of 71%. Stay comfortable and enjoy your time exploring!

July Temperature in Onalaska

In July in Onalaska, the average temperature is 28°C (84°F). Maximums can reach 40°C (105°F) and minimums can be as low as 21°C (70°F). Travelers should prepare for warm weather and stay hydrated during the hottest parts of the day.

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 28°C (84°F), with highs reaching up to 40°C (105°F) and lows dropping to around 21°C (70°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 90 mm (3.5 in) spread over a total of 14 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 90 mm (3.5 inches) of precipitation spread over approximately 14 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 71%. With an average temperature of 28°C (84°F), this humidity feels like a warm, enveloping blanket that makes traveling slightly uncomfortable, as you can easily become sweaty and fatigued, especially during outdoor activities.

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 71%, 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 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. 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 12, which falls under the extreme 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	11°C (52°F)	107 mm (4.2 inches)	79%	moderate
February Weather	13°C (55°F)	112 mm (4.4 inches)	80%	very high
March Weather	17°C (64°F)	97 mm (3.8 inches)	78%	very high
April Weather	20°C (68°F)	115 mm (4.5 inches)	79%	extreme
May Weather	24°C (76°F)	174 mm (6.8 inches)	81%	extreme
June Weather	27°C (82°F)	135 mm (5.3 inches)	77%	extreme
July Weather	28°C (84°F)	90 mm (3.5 inches)	71%	extreme
August Weather	29°C (84°F)	152 mm (6.0 inches)	67%	extreme
September Weather	27°C (80°F)	137 mm (5.4 inches)	69%	very high
October Weather	22°C (71°F)	117 mm (4.6 inches)	73%	very high
November Weather	16°C (60°F)	71 mm (2.8 inches)	82%	high
December Weather	13°C (56°F)	111 mm (4.4 inches)	87%	moderate