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June Weather in Saint Marys, United States

Last updated: June 24, 2025

In June, the average temperature in Saint Marys, United States hovers around 25°C (78°F), providing a pleasant climate. However, be prepared for temperature fluctuations, with minimums dropping to 10°C (50°F) and maximums soaring to 40°C (104°F). This month also sees 96 mm (3.8 in) of precipitation over approximately 9 days, resulting in a high average humidity of 82%.

June Temperature in Saint Marys

In June in Saint Marys, the average temperature is 25°C (78°F). Maximum temperatures can reach 40°C (104°F), while minimums can drop to as low as 10°C (50°F). Be prepared for warm days and cool evenings when traveling during this time.

June Weather in Saint Marys: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Saint Marys, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Marys, June typically has an average temperature of 25°C (78°F), with highs reaching up to 40°C (104°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec313246546577817772564437
Data source: Temperature data for Saint Marys 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 Saint Marys

In Saint Marys in June, the total precipitation amount is 96 mm (3.8 in) spread over a period of 9 days.

June Precipitation Trends in Saint Marys

The chart displays monthly precipitation patterns in Saint Marys, 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 Saint Marys, June typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec382793782059690130801093330
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Saint Marys

In Saint Marys in June, humidity is 82%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging you to seek shade or a cool spot during your travels.

June Average Humidity in Saint Marys

This chart illustrates the average monthly humidity levels in Saint Marys, 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 Saint Marys is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%78%70%73%82%82%81%78%71%71%81%84%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Saint Marys

In Saint Marys 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 Saint Marys.

Maximum UV Index Levels in Saint Marys for June

The chart shows the monthly maximum UV Index (UVI) for Saint Marys 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 Saint Marys typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Saint Marys 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 Saint Marys Compares to Other Months

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

This table compares monthly weather conditions in Saint Marys, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)38 mm (1.5 inches)76%moderate
February Weather0°C (32°F)27 mm (1.1 inches)77%moderate
March Weather8°C (46°F)93 mm (3.7 inches)70%high
April Weather12°C (54°F)78 mm (3.1 inches)73%very high
May Weather19°C (66°F)205 mm (8.1 inches)82%very high
June Weather25°C (78°F)96 mm (3.8 inches)82%extreme
July Weather27°C (81°F)90 mm (3.6 inches)81%extreme
August Weather25°C (77°F)130 mm (5.1 inches)78%very high
September Weather22°C (72°F)80 mm (3.1 inches)71%very high
October Weather13°C (57°F)109 mm (4.3 inches)71%high
November Weather6°C (44°F)32 mm (1.3 inches)81%moderate
December Weather3°C (37°F)30 mm (1.2 inches)84%moderate

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