July Weather in Saint Peters, United States

Last updated: June 24, 2025

In Saint Peters, United States, the average temperature in July hovers around 26°C (80°F), creating a pleasantly warm atmosphere. Temperatures can vary significantly, with a minimum of 16°C (60°F) and a maximum reaching up to 38°C (101°F). During this month, expect 97 mm (3.8 in) of precipitation over approximately 10 days, contributing to an average humidity of 81%. Perfect for those who love a tropical feel!

July Temperature in Saint Peters

In July in Saint Peters, the average temperature is 26°C (80°F). Maximum can reach 38°C (101°F), and minimum can be as low as 16°C (60°F). Be prepared for warm to hot weather, so pack accordingly for your travels!

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

The chart illustrates July temperature patterns in Saint Peters, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Peters, July typically has an average temperature of 26°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 16°C (60°F).

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

July Precipitation in Saint Peters

In Saint Peters in July, the total precipitation amount is 97 mm (3.8 in) over a span of 10 days.

July Precipitation Trends in Saint Peters

The chart displays monthly precipitation patterns in Saint Peters, 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 Peters, July typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Saint Peters

In Saint Peters in July, humidity is 81%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities feel more strenuous and requiring frequent breaks to stay refreshed and hydrated.

July Average Humidity in Saint Peters

This chart illustrates the average monthly humidity levels in Saint Peters, 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 Peters 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 Saint Peters

In Saint Peters in July, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Saint Peters.

Maximum UV Index Levels in Saint Peters for July

The chart shows the monthly maximum UV Index (UVI) for Saint Peters 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 Peters typically reaches 11, which falls under the extreme exposure category.

Data source: Saint Peters 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 Peters Compares to Other Months

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

This table compares monthly weather conditions in Saint Peters, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	72 mm (2.9 inches)	82%	moderate
February Weather	2°C (35°F)	78 mm (3.1 inches)	80%	moderate
March Weather	8°C (47°F)	128 mm (5.0 inches)	80%	high
April Weather	13°C (55°F)	121 mm (4.8 inches)	80%	very high
May Weather	19°C (67°F)	145 mm (5.7 inches)	82%	very high
June Weather	25°C (76°F)	84 mm (3.3 inches)	83%	extreme
July Weather	26°C (80°F)	97 mm (3.8 inches)	81%	extreme
August Weather	24°C (76°F)	139 mm (5.5 inches)	80%	very high
September Weather	22°C (72°F)	56 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	110 mm (4.3 inches)	76%	high
November Weather	7°C (44°F)	68 mm (2.7 inches)	85%	moderate
December Weather	4°C (39°F)	52 mm (2.1 inches)	86%	moderate