Last updated: June 24, 2025
In Plymouth, United States, the average temperature in June hovers around 18°C (65°F), but you can expect some variability. Temperatures can dip to a chilly 1°C (34°F) or soar to a sweltering 34°C (94°F). Be prepared for a splash of rain, as 100 mm (3.9 in) of precipitation may fall over 11 days. With an average humidity of 72%, it's wise to stay hydrated and ready for the weather's moods!
In June in Plymouth, the average temperature is 18°C (65°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as 1°C (34°F). Be prepared for a range of temperatures during your travels, bringing both lightweight clothing for the heat and warmer layers for the cooler moments.
In Plymouth in June, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.
In Plymouth in June humidity is 72%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace, making traveling somewhat uncomfortable as the air clings to your skin and the heat can be stifling, yet it's perfect for enjoying leisurely strolls under the shade.
In Plymouth 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 Plymouth.
UV Risk Categories
Weather in Plymouth varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Plymouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 75 mm (3.0 inches) | 86% | moderate |
| February Weather | -5°C (24°F) | 83 mm (3.3 inches) | 84% | moderate |
| March Weather | -1°C (30°F) | 73 mm (2.9 inches) | 82% | moderate |
| April Weather | 6°C (43°F) | 129 mm (5.1 inches) | 80% | very high |
| May Weather | 13°C (55°F) | 86 mm (3.4 inches) | 72% | very high |
| June Weather | 18°C (65°F) | 100 mm (3.9 inches) | 72% | very high |
| July Weather | 21°C (70°F) | 137 mm (5.4 inches) | 67% | very high |
| August Weather | 20°C (69°F) | 92 mm (3.6 inches) | 66% | very high |
| September Weather | 16°C (62°F) | 66 mm (2.6 inches) | 71% | high |
| October Weather | 10°C (50°F) | 134 mm (5.3 inches) | 78% | moderate |
| November Weather | 2°C (36°F) | 115 mm (4.5 inches) | 84% | moderate |
| December Weather | -3°C (26°F) | 115 mm (4.5 inches) | 81% | low |