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July Weather in Jamestown, United States

Last updated: June 24, 2025

In Jamestown, United States, the average temperature in July hovers around 25°C (78°F). However, you can expect a range, with minimums dipping to 15°C (60°F) and maximums soaring up to 35°C (96°F). This month sees 137 mm (5.4 in) of precipitation spread over approximately 15 days, contributing to an average humidity level of 80%. Be prepared for a warm and slightly damp atmosphere!

July Temperature in Jamestown

In July in Jamestown, the average temperature is 25°C (78°F). Maximums can reach 35°C (96°F), and minimums can be as low as 15°C (60°F). This climate makes it an ideal time for traveling, offering pleasant days for exploration and comfortable evenings for relaxation.

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

The chart illustrates July temperature patterns in Jamestown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jamestown, July typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec394451576873777571614744
Data source: Temperature data for Jamestown 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 Jamestown

In Jamestown in July, the precipitation amount is 137 mm (5.4 in) over the course of 15 days.

July Precipitation Trends in Jamestown

The chart displays monthly precipitation patterns in Jamestown, 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 Jamestown, July typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec10018815215514114213713812113374144
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Jamestown

In Jamestown in July, humidity is 80%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making every outdoor activity feel more strenuous and steaming, while also causing you to seek out shade and refreshment more frequently.

July Average Humidity in Jamestown

This chart illustrates the average monthly humidity levels in Jamestown, 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 Jamestown is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Jamestown

In Jamestown 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 Jamestown.

Maximum UV Index Levels in Jamestown for July

The chart shows the monthly maximum UV Index (UVI) for Jamestown 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 Jamestown typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111111109753
Data source: Jamestown 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 Jamestown Compares to Other Months

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

This table compares monthly weather conditions in Jamestown, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)100 mm (3.9 inches)87%moderate
February Weather7°C (44°F)188 mm (7.4 inches)86%high
March Weather10°C (51°F)152 mm (6.0 inches)86%high
April Weather14°C (58°F)155 mm (6.1 inches)82%very high
May Weather20°C (68°F)141 mm (5.6 inches)82%extreme
June Weather23°C (74°F)142 mm (5.6 inches)83%extreme
July Weather25°C (78°F)137 mm (5.4 inches)80%extreme
August Weather24°C (76°F)138 mm (5.4 inches)74%very high
September Weather22°C (72°F)121 mm (4.8 inches)71%very high
October Weather16°C (62°F)133 mm (5.2 inches)78%high
November Weather8°C (47°F)74 mm (2.9 inches)88%moderate
December Weather6°C (44°F)144 mm (5.7 inches)88%moderate

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