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March Weather in Castlewood, United States

Last updated: June 24, 2025

In Castlewood, United States, the average temperature in March is a chilly -1°C (31°F). However, be prepared for a wide range, as temperatures can plunge to a bone-numbing -28°C (-19°F) or rise to a surprisingly warm 25°C (77°F). Expect about 50 mm (2.0 in) of precipitation spread over 6 days, with an average humidity of 81%. Stay warm and dry!

March Temperature in Castlewood

In March in Castlewood, the average temperature is -1°C (31°F), with maximums reaching up to 25°C (77°F) and minimums plunging as low as -28°C (-19°F). Travelers should be prepared for significant temperature fluctuations, making it essential to pack layers for varying conditions.

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

The chart illustrates March 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, March typically has an average temperature of -1°C (31°F), with highs reaching up to 25°C (77°F) and lows dropping to around -28°C (-19°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.

March Precipitation in Castlewood

In Castlewood in March, the precipitation amount is 50 mm (2.0 in) over the course of 6 days.

March Precipitation Trends in Castlewood

The chart displays monthly precipitation patterns in Castlewood, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Castlewood, March typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2218506889798310989772631
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Castlewood

In Castlewood in March humidity is 81%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, cold mist that clings to your skin, making outdoor adventures damp and challenging.

March Average Humidity in Castlewood

This chart illustrates the average monthly humidity levels in Castlewood, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Castlewood is approximately 81%, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in Castlewood

In Castlewood in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Castlewood, you can refer to this Hourly UV Index in Castlewood.

Maximum UV Index Levels in Castlewood for March

The chart shows the monthly maximum UV Index (UVI) for Castlewood in March, 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 March, the maximum UV index in Castlewood typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998532
Data source: Castlewood March 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 March 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 March’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 March’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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