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June Weather in New Castle, United States

Last updated: June 24, 2025

In June, the average temperature in New Castle, United States is a mild 17°C (63°F), with a range that can see lows of -3°C (28°F) and highs of 34°C (94°F). Expect about 18 mm (0.7 in) of precipitation spread across 4 days, making it a relatively dry month. The average humidity sits at a comfortable 47%, ensuring pleasant weather for outdoor activities.

June Temperature in New Castle

In June in New Castle, the average temperature is 17°C (63°F), with maximums reaching 34°C (94°F) and minimums dropping as low as -3°C (28°F). It's a great time to visit if you enjoy a mix of warm days and cooler nights!

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

The chart illustrates June 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, June typically has an average temperature of 17°C (63°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec212533395063706860433121
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.

June Precipitation in New Castle

In New Castle in June, the total precipitation amount is 18 mm (0.7 in) spread over a duration of 4 days.

June Precipitation Trends in New Castle

The chart displays monthly precipitation patterns in New Castle, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In New Castle, June typically receives around 18 mm (0.7 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec557361484418131318604055
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in New Castle

In New Castle in June humidity is 47%. With an average temperature of 17°C (63°F), this humidity feels like a mild embrace, making traveling comfortable and refreshing, ideal for exploring the local sights without feeling too sticky or weighed down.

June Average Humidity in New Castle

This chart illustrates the average monthly humidity levels in New Castle, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in New Castle is approximately 47%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%81%74%58%47%39%39%53%72%84%90%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in New Castle

In New Castle in June, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in New Castle.

Maximum UV Index Levels in New Castle for June

The chart shows the monthly maximum UV Index (UVI) for New Castle in June, 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 June, the maximum UV index in New Castle typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec469121213121210754
Data source: New Castle June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)55 mm (2.2 inches)90%moderate
February Weather-4°C (25°F)73 mm (2.9 inches)89%high
March Weather1°C (33°F)61 mm (2.4 inches)81%very high
April Weather4°C (39°F)48 mm (1.9 inches)74%extreme
May Weather10°C (50°F)43 mm (1.7 inches)58%extreme
June Weather17°C (63°F)18 mm (0.7 inches)47%extreme
July Weather21°C (70°F)13 mm (0.5 inches)39%extreme
August Weather20°C (68°F)13 mm (0.5 inches)39%extreme
September Weather16°C (60°F)18 mm (0.7 inches)53%very high
October Weather6°C (43°F)60 mm (2.4 inches)72%high
November Weather0°C (32°F)39 mm (1.6 inches)84%moderate
December Weather-6°C (22°F)55 mm (2.2 inches)90%moderate

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