nomadseason

May Weather in Jamestown, United States

Last updated: June 24, 2025

In May, the average temperature in Jamestown, United States hovers around 21°C (69°F), providing a comfortable climate for visitors. However, don't be surprised by the temperature range, which can dip to a chilly 1°C (35°F) or rise to a sweltering 35°C (95°F). Expect about 120 mm (4.7 in) of precipitation spread across 12 days, with an average humidity level of 83%, making it a lush and vibrant time to explore the area.

May Temperature in Jamestown

In May in Jamestown, the average temperature is 21°C (69°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 1°C (35°F). This diverse climate makes Jamestown an ideal destination for travelers seeking both warm days and cool evenings.

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

The chart illustrates May 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, May typically has an average temperature of 21°C (69°F), with highs reaching up to 35°C (95°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec414651606975807773634945
Data source: Temperature data for Jamestown generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Jamestown

In Jamestown in May, the precipitation amount is 120 mm (4.7 in) over a period of 12 days.

May Precipitation Trends in Jamestown

The chart displays monthly precipitation patterns in Jamestown, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Jamestown, May typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec88121871091201069712713710482109
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Jamestown

In Jamestown in May, humidity is 83%. With an average temperature of 21°C (69°F), this humidity feels like a heavy blanket enveloping you, making travel feel sticky and challenging as you navigate the damp air.

May Average Humidity in Jamestown

This chart illustrates the average monthly humidity levels in Jamestown, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Jamestown is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Jamestown

In Jamestown in May, 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 Jamestown.

Maximum UV Index Levels in Jamestown for May

The chart shows the monthly maximum UV Index (UVI) for Jamestown in May, 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 May, the maximum UV index in Jamestown typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101110109853
Data source: Jamestown May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)88 mm (3.5 inches)86%moderate
February Weather8°C (47°F)121 mm (4.8 inches)85%high
March Weather11°C (52°F)87 mm (3.4 inches)84%very high
April Weather16°C (60°F)109 mm (4.3 inches)82%very high
May Weather21°C (69°F)120 mm (4.7 inches)83%very high
June Weather24°C (76°F)106 mm (4.2 inches)82%extreme
July Weather27°C (80°F)97 mm (3.8 inches)80%very high
August Weather25°C (78°F)127 mm (5.0 inches)74%very high
September Weather23°C (73°F)137 mm (5.4 inches)75%very high
October Weather17°C (64°F)104 mm (4.1 inches)79%very high
November Weather9°C (49°F)82 mm (3.2 inches)87%moderate
December Weather7°C (45°F)109 mm (4.3 inches)87%moderate

Compare Jamestown's Climate with Cities Worldwide