July Weather in Saint Marys, United States

Last updated: June 24, 2025

In July, the average temperature in Saint Marys, United States is a pleasant 21°C (71°F), with a minimum dipping to 9°C (49°F) and highs soaring up to 33°C (92°F). Expect around 117 mm (4.6 in) of precipitation spread over 16 days, contributing to an average humidity of 74%. Enjoy the mild climate while preparing for occasional showers!

July Temperature in Saint Marys

In July in Saint Marys, the average temperature is 21°C (71°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 9°C (49°F). This range makes it an ideal time for travelers to enjoy outdoor activities while also being prepared for cooler evenings.

July Weather in Saint Marys: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Saint Marys, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Marys, July typically has an average temperature of 21°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 9°C (49°F).

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

July Precipitation in Saint Marys

In Saint Marys in July, the precipitation amount is 117 mm (4.6 in), which falls over a span of 16 days.

July Precipitation Trends in Saint Marys

The chart displays monthly precipitation patterns in Saint Marys, 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 Saint Marys, July typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 16 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 Saint Marys

In Saint Marys in July, humidity is 74%. With an average temperature of 21°C (71°F), this humidity feels like traveling through a warm, damp blanket, making outdoor excursions feel sticky and a bit stifling, often prompting the need for frequent breaks to stay refreshed.

July Average Humidity in Saint Marys

This chart illustrates the average monthly humidity levels in Saint Marys, 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 Saint Marys is approximately 74%, 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 Saint Marys

In Saint Marys 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 Saint Marys.

Maximum UV Index Levels in Saint Marys for July

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

Data source: Saint Marys 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 Saint Marys Compares to Other Months

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

This table compares monthly weather conditions in Saint Marys, 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 (26°F)	90 mm (3.5 inches)	89%	moderate
February Weather	-2°C (29°F)	107 mm (4.2 inches)	90%	moderate
March Weather	2°C (36°F)	94 mm (3.7 inches)	89%	high
April Weather	8°C (46°F)	124 mm (4.9 inches)	88%	very high
May Weather	14°C (58°F)	144 mm (5.7 inches)	80%	very high
June Weather	19°C (66°F)	123 mm (4.9 inches)	79%	very high
July Weather	21°C (71°F)	117 mm (4.6 inches)	74%	very high
August Weather	20°C (69°F)	94 mm (3.7 inches)	64%	very high
September Weather	17°C (63°F)	111 mm (4.4 inches)	67%	very high
October Weather	11°C (53°F)	125 mm (4.9 inches)	81%	high
November Weather	3°C (38°F)	94 mm (3.7 inches)	89%	moderate
December Weather	0°C (32°F)	98 mm (3.9 inches)	88%	low