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July Weather in Plymouth, United States

Last updated: June 24, 2025

In Plymouth, United States, the average temperature in July hovers around 23°C (74°F), creating a pleasant climate for outdoor activities. Expect minimum temperatures to dip to 12°C (53°F) and soar to a maximum of 34°C (94°F). However, don’t forget your umbrella, as 118 mm (4.6 in) of precipitation can be expected over 13 days. With an average humidity of 65%, it’s wise to stay hydrated and enjoy the refreshing atmosphere!

July Temperature in Plymouth

In July in Plymouth, the weather is generally pleasant, making it an ideal time for travelers to explore and enjoy outdoor activities.

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 23°C (74°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec283237485968737165554034
Data source: Temperature data for Plymouth generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Plymouth

In Plymouth in July, the precipitation amount is 118 mm (4.6 in) over a span of 13 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 118 mm (4.6 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec719688102122951181211021148783
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Plymouth

In Plymouth in July, humidity is 65%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat challenging but still enjoyable with the right planning.

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 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%85%83%75%74%65%62%66%79%87%85%
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 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 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)71 mm (2.8 inches)87%moderate
February Weather0°C (32°F)96 mm (3.8 inches)85%moderate
March Weather3°C (38°F)88 mm (3.5 inches)85%high
April Weather9°C (49°F)102 mm (4.0 inches)83%very high
May Weather15°C (60°F)122 mm (4.8 inches)75%very high
June Weather20°C (68°F)95 mm (3.7 inches)73%very high
July Weather23°C (74°F)118 mm (4.6 inches)65%very high
August Weather22°C (72°F)121 mm (4.8 inches)62%very high
September Weather18°C (65°F)102 mm (4.0 inches)66%very high
October Weather13°C (55°F)114 mm (4.5 inches)79%high
November Weather5°C (41°F)87 mm (3.4 inches)87%moderate
December Weather1°C (34°F)83 mm (3.3 inches)85%low

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