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May Weather in Jamestown, United States

Last updated: June 24, 2025

In May, the average temperature in Jamestown, United States hovers around 18°C (64°F), offering a pleasant climate for outdoor activities. However, be prepared for a range of temperatures, with lows dipping to -1°C (30°F) and highs soaring up to 34°C (93°F). Expect 147 mm (5.8 in) of precipitation spread over 15 days, and with an average humidity level of 79%, it's a good idea to pack both light layers and an umbrella just in case!

May Temperature in Jamestown

In May in Jamestown, the average temperature is 18°C (64°F), with highs that can reach 34°C (93°F) and lows that can drop to -1°C (30°F). This variability makes it a great time to explore the diverse climates and activities that Jamestown has to offer.

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 18°C (64°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec293242526473767470574135
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.

May Precipitation in Jamestown

In Jamestown in May, the precipitation amount is 147 mm (5.8 in) over a span of 15 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 147 mm (5.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec8185117941471039992671088372
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Jamestown

In Jamestown in May, humidity is 79%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace that can make outdoor activities more challenging but also creates a lush, vibrant atmosphere that's perfect for exploring local culture and scenery.

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 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%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.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
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 Weather-2°C (29°F)81 mm (3.2 inches)87%moderate
February Weather0°C (32°F)85 mm (3.3 inches)85%moderate
March Weather6°C (42°F)117 mm (4.6 inches)86%high
April Weather11°C (52°F)94 mm (3.7 inches)84%very high
May Weather18°C (64°F)147 mm (5.8 inches)79%very high
June Weather23°C (74°F)103 mm (4.0 inches)82%extreme
July Weather25°C (77°F)99 mm (3.9 inches)79%very high
August Weather23°C (74°F)92 mm (3.6 inches)70%very high
September Weather21°C (70°F)67 mm (2.7 inches)69%very high
October Weather14°C (58°F)108 mm (4.3 inches)76%high
November Weather5°C (42°F)83 mm (3.3 inches)88%moderate
December Weather2°C (36°F)72 mm (2.8 inches)87%low

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