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June Weather in Greenwich, United States

Last updated: June 24, 2025

In June, the average temperature in Greenwich, United States is a pleasant 21°C (71°F). However, be prepared for temperature swings, as the minimum can dip to 5°C (41°F), while the maximum can soar up to 34°C (93°F). Expect precipitation averaging 136 mm (5.4 in) over roughly 14 days, and note that the air tends to be quite humid, with an average humidity of 82%.

June Temperature in Greenwich

In June in Greenwich, the average temperature is 21°C (71°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 5°C (41°F). This makes it a great time for travelers to enjoy a range of outdoor activities while being prepared for varying temperatures.

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

The chart illustrates June temperature patterns in Greenwich, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenwich, June typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec293240506270747267564134
Data source: Temperature data for Greenwich 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 Greenwich

In Greenwich in June, the precipitation amount is 136 mm (5.4 in) over a span of 14 days.

June Precipitation Trends in Greenwich

The chart displays monthly precipitation patterns in Greenwich, 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 Greenwich, June typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec7892971231291361289179968884
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Greenwich

In Greenwich in June humidity is 82%. With an average temperature of 21°C (71°F), this humidity feels like a warm, muggy embrace that can make traveling feel sticky and exhausting, urging you to seek shade and hydration as you explore the vibrant surroundings.

June Average Humidity in Greenwich

This chart illustrates the average monthly humidity levels in Greenwich, 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 Greenwich is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Greenwich

In Greenwich in June, 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 Greenwich.

Maximum UV Index Levels in Greenwich for June

The chart shows the monthly maximum UV Index (UVI) for Greenwich 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 Greenwich typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Greenwich 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 Greenwich Compares to Other Months

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

This table compares monthly weather conditions in Greenwich, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)78 mm (3.1 inches)88%moderate
February Weather0°C (32°F)92 mm (3.6 inches)87%moderate
March Weather4°C (40°F)97 mm (3.8 inches)87%high
April Weather10°C (50°F)123 mm (4.8 inches)87%very high
May Weather16°C (62°F)129 mm (5.1 inches)81%very high
June Weather21°C (71°F)136 mm (5.4 inches)82%very high
July Weather24°C (75°F)128 mm (5.0 inches)81%very high
August Weather22°C (72°F)91 mm (3.6 inches)78%very high
September Weather20°C (67°F)79 mm (3.1 inches)78%very high
October Weather14°C (57°F)96 mm (3.8 inches)82%high
November Weather5°C (41°F)88 mm (3.4 inches)89%moderate
December Weather1°C (35°F)84 mm (3.3 inches)86%low

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