July Weather in Plymouth, United States

Last updated: June 24, 2025

In Plymouth, United States, the average temperature in July is a warm 27°C (80°F), with a minimum of 15°C (59°F) and a maximum of 36°C (96°F). Expect significant precipitation with about 141 mm (5.5 in) of rain over 16 days, contributing to the high humidity level of 83%. Stay prepared for both the heat and the occasional downpour!

July Temperature in Plymouth

In July in Plymouth, the average temperature is 27°C (80°F). Maximums can reach 36°C (96°F) and minimums can be as low as 15°C (59°F). This makes it an ideal destination for travelers seeking pleasant weather with a warm climate and the possibility of cooler evenings.

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

The chart illustrates July temperature patterns in Plymouth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plymouth, July typically has an average temperature of 27°C (80°F), with highs reaching up to 36°C (96°F) and lows dropping to around 15°C (59°F).

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

July Precipitation in Plymouth

In Plymouth in July, the precipitation amount is 141 mm (5.5 in) accumulated over 16 days.

July Precipitation Trends in Plymouth

The chart displays monthly precipitation patterns in Plymouth, 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 Plymouth, July typically receives around 141 mm (5.5 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 Plymouth

In Plymouth in July, humidity is 83%. With an average temperature of 27°C (80°F), this humidity feels like a warm, steamy embrace, making traveling a bit uncomfortable as the air clings to your skin and renders even the slightest exertion more exhausting.

July Average Humidity in Plymouth

This chart illustrates the average monthly humidity levels in Plymouth, 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 Plymouth is approximately 83%, 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 Plymouth

In Plymouth 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 Plymouth.

Maximum UV Index Levels in Plymouth for July

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

Data source: Plymouth 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 Plymouth Compares to Other Months

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

This table compares monthly weather conditions in Plymouth, 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 (45°F)	90 mm (3.5 inches)	84%	moderate
February Weather	10°C (50°F)	95 mm (3.7 inches)	81%	high
March Weather	12°C (53°F)	64 mm (2.5 inches)	80%	very high
April Weather	17°C (62°F)	100 mm (3.9 inches)	80%	very high
May Weather	21°C (70°F)	114 mm (4.5 inches)	81%	extreme
June Weather	25°C (76°F)	149 mm (5.9 inches)	82%	very high
July Weather	27°C (80°F)	141 mm (5.5 inches)	83%	extreme
August Weather	26°C (79°F)	170 mm (6.7 inches)	82%	very high
September Weather	24°C (75°F)	125 mm (4.9 inches)	80%	very high
October Weather	19°C (67°F)	75 mm (2.9 inches)	79%	very high
November Weather	12°C (54°F)	96 mm (3.8 inches)	83%	moderate
December Weather	9°C (49°F)	108 mm (4.2 inches)	84%	moderate