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June Weather in Hyannis, United States

Last updated: June 24, 2025

In June, the average temperature in Hyannis, United States hovers around 21°C (70°F). Prepare for a temperature range where the minimum can drop to 6°C (42°F) and the maximum soars to 37°C (98°F). With an average humidity of 79%, you can expect a humid atmosphere. Additionally, be ready for some rain, as 56 mm (2.2 in) of precipitation is likely over 8 days.

June Temperature in Hyannis

In June in Hyannis, the average temperature is 21°C (70°F). Maximum temperatures can reach 37°C (98°F), while minimums can drop to as low as 6°C (42°F). Be prepared for a wide range of temperatures, ideal for both warm-weather activities and cooler evening outings.

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

The chart illustrates June temperature patterns in Hyannis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hyannis, June typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (98°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec272437445569747164463830
Data source: Temperature data for Hyannis 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 Hyannis

In Hyannis in June, the precipitation amount is 56 mm (2.2 in) over the course of 8 days.

June Precipitation Trends in Hyannis

The chart displays monthly precipitation patterns in Hyannis, 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 Hyannis, June typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1424634913656635846362221
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Hyannis

In Hyannis in June humidity is 79%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor exploration a bit sticky but still enjoyable for travelers who appreciate the lush, vibrant atmosphere.

June Average Humidity in Hyannis

This chart illustrates the average monthly humidity levels in Hyannis, 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 Hyannis is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Hyannis

In Hyannis 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 Hyannis.

Maximum UV Index Levels in Hyannis for June

The chart shows the monthly maximum UV Index (UVI) for Hyannis 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 Hyannis typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101111109643
Data source: Hyannis 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 Hyannis Compares to Other Months

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

This table compares monthly weather conditions in Hyannis, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)14 mm (0.5 inches)73%moderate
February Weather-4°C (25°F)24 mm (0.9 inches)80%moderate
March Weather3°C (38°F)63 mm (2.5 inches)64%high
April Weather7°C (44°F)49 mm (1.9 inches)64%very high
May Weather13°C (55°F)136 mm (5.4 inches)76%very high
June Weather21°C (70°F)56 mm (2.2 inches)79%extreme
July Weather23°C (74°F)63 mm (2.5 inches)77%extreme
August Weather21°C (71°F)58 mm (2.3 inches)79%very high
September Weather18°C (65°F)46 mm (1.8 inches)70%very high
October Weather8°C (46°F)36 mm (1.4 inches)64%high
November Weather3°C (38°F)22 mm (0.9 inches)75%moderate
December Weather-1°C (30°F)21 mm (0.8 inches)78%moderate

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