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August Weather in New Castle, United States

Last updated: June 24, 2025

In August, the average temperature in New Castle, United States hovers around 23°C (73°F), offering a delightful climate. However, be prepared for minima as cool as 11°C (52°F) and maxima soaring to 34°C (93°F). Expect 109 mm (4.3 in) of precipitation over roughly 12 days, accompanied by an average humidity level of 66%, ensuring a refreshing atmosphere throughout the month.

August Temperature in New Castle

In August in New Castle, the average temperature is 23°C (73°F). Maximums can reach 34°C (93°F), and minimums can be as low as 11°C (52°F). This diverse range of temperatures makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

August Weather in New Castle: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in New Castle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Castle, August typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (93°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec354045546370757368584439
Data source: Temperature data for New Castle 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.

August Precipitation in New Castle

In New Castle in August, the total precipitation amount is 109 mm (4.3 in) during a span of 12 days.

August Precipitation Trends in New Castle

The chart displays monthly precipitation patterns in New Castle, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In New Castle, August typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7411182120147117781091141147598
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in New Castle

In New Castle in August, humidity is 66%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated and plan outdoor activities for cooler times of the day.

August Average Humidity in New Castle

This chart illustrates the average monthly humidity levels in New Castle, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in New Castle is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%84%83%83%79%66%68%78%89%86%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in New Castle

In New Castle in August, 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 New Castle.

Maximum UV Index Levels in New Castle for August

The chart shows the monthly maximum UV Index (UVI) for New Castle in August, 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 August, the maximum UV index in New Castle typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810101111109753
Data source: New Castle August 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 August Weather in New Castle Compares to Other Months

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

This table compares monthly weather conditions in New Castle, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)73 mm (2.9 inches)87%moderate
February Weather5°C (41°F)111 mm (4.4 inches)87%high
March Weather7°C (46°F)82 mm (3.2 inches)86%very high
April Weather12°C (55°F)120 mm (4.7 inches)84%very high
May Weather17°C (64°F)147 mm (5.8 inches)83%very high
June Weather21°C (70°F)117 mm (4.6 inches)83%extreme
July Weather24°C (75°F)78 mm (3.1 inches)79%extreme
August Weather23°C (73°F)109 mm (4.3 inches)66%very high
September Weather20°C (68°F)114 mm (4.5 inches)68%very high
October Weather15°C (58°F)114 mm (4.5 inches)78%high
November Weather6°C (44°F)75 mm (3.0 inches)89%moderate
December Weather4°C (39°F)98 mm (3.9 inches)86%moderate

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