July Weather in Mercer, United States

Last updated: June 24, 2025

In July, the average temperature in Mercer, United States hovers around 20°C (69°F). Be prepared for a range, as the minimum can drop to 7°C (45°F) while the maximum may soar to 35°C (95°F). Expect 120 mm (4.7 in) of precipitation spread over 12 days, and feel the 75% humidity in the air.

July Temperature in Mercer

In July in Mercer, the average temperature is 20°C (69°F). Maximums can reach 35°C (95°F), and minimums can be as low as 7°C (45°F). This range makes Mercer an ideal destination for travelers seeking comfortable weather alongside opportunities for both warm and cooler activities.

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

The chart illustrates July temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, July typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 7°C (45°F).

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

July Precipitation in Mercer

In Mercer in July, the precipitation amount is 120 mm (4.7 in) over a period of 12 days.

July Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, 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 Mercer, July typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 12 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 Mercer

In Mercer in July, humidity is 75%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel a bit muggy and requiring frequent hydration breaks to stay comfortable while exploring.

July Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, 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 Mercer is approximately 75%, 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 Mercer

In Mercer 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 Mercer.

Maximum UV Index Levels in Mercer for July

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

Data source: Mercer 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 Mercer Compares to Other Months

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

This table compares monthly weather conditions in Mercer, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	85 mm (3.3 inches)	91%	low
February Weather	-6°C (22°F)	84 mm (3.3 inches)	89%	moderate
March Weather	-2°C (29°F)	72 mm (2.8 inches)	85%	moderate
April Weather	5°C (42°F)	127 mm (5.0 inches)	84%	very high
May Weather	12°C (54°F)	87 mm (3.4 inches)	78%	very high
June Weather	18°C (64°F)	83 mm (3.3 inches)	72%	very high
July Weather	20°C (69°F)	120 mm (4.7 inches)	75%	very high
August Weather	20°C (68°F)	82 mm (3.2 inches)	74%	very high
September Weather	16°C (61°F)	69 mm (2.7 inches)	77%	high
October Weather	9°C (49°F)	129 mm (5.1 inches)	85%	moderate
November Weather	1°C (35°F)	112 mm (4.4 inches)	86%	moderate
December Weather	-5°C (24°F)	116 mm (4.6 inches)	85%	low