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June Weather in Saint Johns, United States

Last updated: June 24, 2025

In June, the average temperature in Saint Johns, United States hovers around 21°C (70°F). Expect a pleasant range with minimums dipping to 6°C (43°F) and maximums soaring to 34°C (94°F). However, be prepared for occasional rain, with 117 mm (4.6 in) of precipitation expected over 12 days. Don't forget to factor in the high average humidity of 80%, which can make the air feel a bit more muggy.

June Temperature in Saint Johns

In June in Saint Johns, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 6°C (43°F). This varied climate makes it an ideal destination for travelers looking to experience a mix of warm days and cooler evenings.

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

The chart illustrates June temperature patterns in Saint Johns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Johns, June typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec252736465970757265533832
Data source: Temperature data for Saint Johns 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 Johns

In Saint Johns in June, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.

June Precipitation Trends in Saint Johns

The chart displays monthly precipitation patterns in Saint Johns, 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 Johns, June typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec6366638812111768681011166360
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Saint Johns

In Saint Johns in June humidity is 80%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can make even short walks feel draining, urging travelers to seek shade or a cool drink frequently.

June Average Humidity in Saint Johns

This chart illustrates the average monthly humidity levels in Saint Johns, 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 Johns is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Saint Johns

In Saint Johns 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 Saint Johns.

Maximum UV Index Levels in Saint Johns for June

The chart shows the monthly maximum UV Index (UVI) for Saint Johns 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 Johns typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: Saint Johns 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 Johns Compares to Other Months

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

This table compares monthly weather conditions in Saint Johns, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)63 mm (2.5 inches)88%low
February Weather-3°C (27°F)66 mm (2.6 inches)87%moderate
March Weather2°C (36°F)63 mm (2.5 inches)85%moderate
April Weather8°C (47°F)88 mm (3.5 inches)86%very high
May Weather15°C (60°F)121 mm (4.8 inches)80%very high
June Weather21°C (70°F)117 mm (4.6 inches)80%very high
July Weather24°C (75°F)68 mm (2.7 inches)80%very high
August Weather22°C (72°F)68 mm (2.7 inches)80%very high
September Weather18°C (65°F)101 mm (4.0 inches)80%high
October Weather12°C (53°F)116 mm (4.6 inches)84%moderate
November Weather3°C (38°F)63 mm (2.5 inches)89%moderate
December Weather0°C (32°F)60 mm (2.4 inches)86%low

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