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May Weather in Castlewood, United States

Last updated: June 24, 2025

In Castlewood, United States during May, the average temperature hovers around 13°C (56°F). Expect temperatures to range from a chilly -2°C (29°F) to a warm 33°C (91°F). The region experiences an average of 89 mm (3.5 in) of precipitation over approximately 11 days, contributing to a relatively high average humidity of 76%.

May Temperature in Castlewood

In May in Castlewood, the average temperature is 13°C (56°F), with maximums reaching up to 33°C (91°F) and minimums dipping as low as -2°C (29°F). It's advisable to pack a range of clothing to accommodate the varying temperatures during your travels.

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

The chart illustrates May temperature patterns in Castlewood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castlewood, May typically has an average temperature of 13°C (56°F), with highs reaching up to 33°C (91°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec151431415670736962453223
Data source: Temperature data for Castlewood 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 Castlewood

In Castlewood in May, the precipitation amount is 89 mm (3.5 in) over a span of 11 days.

May Precipitation Trends in Castlewood

The chart displays monthly precipitation patterns in Castlewood, 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 Castlewood, May typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec2218506889798310989772631
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Castlewood

In Castlewood in May humidity is 76%. With an average temperature of 13°C (56°F), this humidity feels like a damp blanket enveloping you, making travel a bit uncomfortable as you navigate through the heavy, moisture-laden air.

May Average Humidity in Castlewood

This chart illustrates the average monthly humidity levels in Castlewood, 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 Castlewood is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Castlewood

In Castlewood in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Castlewood.

Maximum UV Index Levels in Castlewood for May

The chart shows the monthly maximum UV Index (UVI) for Castlewood 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 Castlewood typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998532
Data source: Castlewood 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 Castlewood Compares to Other Months

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

This table compares monthly weather conditions in Castlewood, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)22 mm (0.9 inches)85%moderate
February Weather-10°C (15°F)18 mm (0.7 inches)89%moderate
March Weather-1°C (31°F)50 mm (2.0 inches)81%high
April Weather5°C (41°F)68 mm (2.7 inches)82%very high
May Weather13°C (56°F)89 mm (3.5 inches)76%very high
June Weather21°C (70°F)79 mm (3.1 inches)81%very high
July Weather23°C (73°F)83 mm (3.3 inches)82%very high
August Weather21°C (70°F)109 mm (4.3 inches)83%very high
September Weather17°C (63°F)88 mm (3.5 inches)82%very high
October Weather7°C (46°F)77 mm (3.0 inches)82%moderate
November Weather0°C (33°F)26 mm (1.0 inches)87%moderate
December Weather-5°C (24°F)31 mm (1.2 inches)84%low

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