July Weather in Saint Johns, United States

Last updated: June 24, 2025

In July, the average temperature in Saint Johns, United States hovers around 25°C (77°F), making it a pleasant time to explore. However, temperatures can range from a cool 10°C (51°F) to a scorching 38°C (100°F). Visitors should be prepared for some light rain, with an average precipitation of 32 mm (1.3 in) spread over 8 days. The climate is also relatively dry, with an average humidity of just 37%, ensuring comfortable conditions for outdoor activities.

July Temperature in Saint Johns

In July in Saint Johns, the average temperature is 25°C (77°F). The maximum can reach 38°C (100°F), and the minimum can be as low as 10°C (51°F). This makes it a great time for travelers to enjoy warm days while still having cooler evenings for comfortable exploration.

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

The chart illustrates July temperature patterns in Saint Johns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Johns, July typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (100°F) and lows dropping to around 10°C (51°F).

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

July Precipitation in Saint Johns

In Saint Johns in July, the precipitation amount is 32 mm (1.3 in) over the course of 8 days.

July Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, 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 Johns, July typically receives around 32 mm (1.3 inches) of precipitation spread over approximately 8 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 Johns

In Saint Johns in July humidity is 37%. With an average temperature of 25°C (77°F), this humidity feels like a pleasant breeze on your skin, making it perfect for exploring the sights without the discomfort of excessive heat or stickiness.

July Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, 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 Johns is approximately 37%, 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 Johns

In Saint Johns in July, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Saint Johns.

Maximum UV Index Levels in Saint Johns for July

The chart shows the monthly maximum UV Index (UVI) for Saint Johns 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 Johns typically reaches 13, which falls under the extreme exposure category.

Data source: Saint Johns 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 Johns Compares to Other Months

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

This table compares monthly weather conditions in Saint Johns, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	25 mm (1.0 inches)	81%	moderate
February Weather	4°C (40°F)	29 mm (1.1 inches)	83%	high
March Weather	9°C (48°F)	21 mm (0.8 inches)	71%	very high
April Weather	14°C (57°F)	13 mm (0.5 inches)	61%	extreme
May Weather	18°C (64°F)	9 mm (0.4 inches)	48%	extreme
June Weather	24°C (76°F)	6 mm (0.3 inches)	36%	extreme
July Weather	25°C (77°F)	32 mm (1.3 inches)	37%	extreme
August Weather	24°C (76°F)	19 mm (0.8 inches)	46%	extreme
September Weather	21°C (69°F)	19 mm (0.8 inches)	62%	extreme
October Weather	14°C (57°F)	17 mm (0.7 inches)	74%	very high
November Weather	8°C (47°F)	12 mm (0.5 inches)	82%	high
December Weather	3°C (37°F)	19 mm (0.8 inches)	82%	moderate