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June Weather in Princeton, United States

Last updated: June 24, 2025

In June, the average temperature in Princeton, United States is a pleasant 20°C (68°F). Expect a range where the minimum can dip to 7°C (45°F) and the maximum can reach 31°C (88°F). Be prepared for some rain, as 119 mm (4.7 in) of precipitation is likely over 15 days, and don't forget the high humidity, averaging 83%.

June Temperature in Princeton

In June in Princeton, the average temperature is 20°C (68°F). The maximum can reach 31°C (88°F) and the minimum can be as low as 7°C (45°F). This makes it an ideal time to explore the sights while enjoying comfortable weather.

June Weather in Princeton: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Princeton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Princeton, June typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (88°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec344045536268727066574339
Data source: Temperature data for Princeton 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 Princeton

In Princeton in June, the precipitation amount is 119 mm (4.7 in) over a span of 15 days.

June Precipitation Trends in Princeton

The chart displays monthly precipitation patterns in Princeton, 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 Princeton, June typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec77124100120133119781091091157296
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Princeton

In Princeton in June humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.

June Average Humidity in Princeton

This chart illustrates the average monthly humidity levels in Princeton, 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 Princeton is approximately 83%, 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 June generated using information from the Copernicus Climate Change Service.

June UV Index in Princeton

In Princeton in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Princeton.

Maximum UV Index Levels in Princeton for June

The chart shows the monthly maximum UV Index (UVI) for Princeton 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 Princeton typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010753
Data source: Princeton 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 Princeton Compares to Other Months

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

This table compares monthly weather conditions in Princeton, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)77 mm (3.0 inches)87%moderate
February Weather4°C (40°F)124 mm (4.9 inches)87%high
March Weather7°C (45°F)100 mm (3.9 inches)86%very high
April Weather11°C (53°F)120 mm (4.7 inches)84%very high
May Weather17°C (62°F)133 mm (5.2 inches)83%extreme
June Weather20°C (68°F)119 mm (4.7 inches)83%extreme
July Weather22°C (72°F)78 mm (3.1 inches)79%extreme
August Weather21°C (70°F)109 mm (4.3 inches)66%very high
September Weather19°C (66°F)109 mm (4.3 inches)68%very high
October Weather14°C (57°F)115 mm (4.5 inches)78%high
November Weather6°C (43°F)72 mm (2.8 inches)89%moderate
December Weather4°C (39°F)96 mm (3.8 inches)86%moderate

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