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June Weather in Rockville, United States

Last updated: June 24, 2025

In June, the average temperature in Rockville, United States hovers around 20°C (69°F). Expect a range where the minimum dips to 6°C (43°F) and the maximum soars to 36°C (97°F). Precipitation during this month reaches 85 mm (3.4 in), typically over 11 days, while the average humidity sits at a comfortable 69%.

June Temperature in Rockville

In June in Rockville, the average temperature is 20°C (69°F), with maximums reaching up to 36°C (97°F) and minimums dropping as low as 6°C (43°F). This mild climate makes it an ideal time for travelers to explore the outdoor attractions and enjoy the local scenery.

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

The chart illustrates June temperature patterns in Rockville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockville, June typically has an average temperature of 20°C (69°F), with highs reaching up to 36°C (97°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec303339495969757366564234
Data source: Temperature data for Rockville 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 Rockville

In Rockville in June, the precipitation amount is 85 mm (3.4 in) over the course of 11 days.

June Precipitation Trends in Rockville

The chart displays monthly precipitation patterns in Rockville, 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 Rockville, June typically receives around 85 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec66868912511385145909813291123
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Rockville

In Rockville in June humidity is 69%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping embrace, making travel feel both refreshing and slightly sticky, as you navigate the vibrant atmosphere with a pleasant sheen of perspiration glistening on your skin.

June Average Humidity in Rockville

This chart illustrates the average monthly humidity levels in Rockville, 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 Rockville is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Rockville

In Rockville 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 Rockville.

Maximum UV Index Levels in Rockville for June

The chart shows the monthly maximum UV Index (UVI) for Rockville 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 Rockville typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Rockville 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 Rockville Compares to Other Months

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

This table compares monthly weather conditions in Rockville, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)66 mm (2.6 inches)84%moderate
February Weather1°C (33°F)86 mm (3.4 inches)82%moderate
March Weather4°C (39°F)89 mm (3.5 inches)81%high
April Weather9°C (49°F)125 mm (4.9 inches)78%very high
May Weather15°C (60°F)113 mm (4.5 inches)69%very high
June Weather20°C (69°F)85 mm (3.4 inches)69%very high
July Weather24°C (75°F)144 mm (5.7 inches)62%very high
August Weather23°C (74°F)90 mm (3.5 inches)65%very high
September Weather19°C (67°F)98 mm (3.8 inches)68%very high
October Weather13°C (56°F)132 mm (5.2 inches)74%high
November Weather6°C (43°F)91 mm (3.6 inches)82%moderate
December Weather1°C (34°F)123 mm (4.9 inches)80%low

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