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June Weather in Johnstown, United States

Last updated: June 24, 2025

In June, the average temperature in Johnstown, United States is a mild 22°C (71°F), with fluctuations ranging from a cool 7°C (45°F) at night to a warm 33°C (92°F) during the day. Expect around 151 mm (5.9 in) of precipitation spread over 14 days, contributing to a high average humidity of 82%. Be prepared for a mix of sunny and rainy days!

June Temperature in Johnstown

In June in Johnstown, the average temperature is 22°C (71°F), with maximums reaching 33°C (92°F) and minimums dipping as low as 7°C (45°F). This makes for a comfortable climate, perfect for exploring and enjoying outdoor activities.

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

The chart illustrates June temperature patterns in Johnstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnstown, June typically has an average temperature of 22°C (71°F), with highs reaching up to 33°C (92°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec303341516371757368574136
Data source: Temperature data for Johnstown 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 Johnstown

In Johnstown in June, the total precipitation amount is 151 mm (5.9 in) spread over 14 days.

June Precipitation Trends in Johnstown

The chart displays monthly precipitation patterns in Johnstown, 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 Johnstown, June typically receives around 151 mm (5.9 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec861101111251291511147688102100104
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Johnstown

In Johnstown in June, humidity is 82%. With an average temperature of 22°C (71°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel laborious and sweat-dripping, urging travelers to stay hydrated and seek the shade more often.

June Average Humidity in Johnstown

This chart illustrates the average monthly humidity levels in Johnstown, 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 Johnstown is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Johnstown

In Johnstown 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 Johnstown.

Maximum UV Index Levels in Johnstown for June

The chart shows the monthly maximum UV Index (UVI) for Johnstown 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 Johnstown typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Johnstown 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 Johnstown Compares to Other Months

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

This table compares monthly weather conditions in Johnstown, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)86 mm (3.4 inches)88%moderate
February Weather1°C (34°F)110 mm (4.3 inches)87%moderate
March Weather5°C (42°F)111 mm (4.4 inches)87%high
April Weather11°C (51°F)125 mm (4.9 inches)87%very high
May Weather17°C (63°F)129 mm (5.1 inches)81%very high
June Weather22°C (71°F)151 mm (5.9 inches)82%very high
July Weather24°C (75°F)114 mm (4.5 inches)81%very high
August Weather23°C (73°F)76 mm (3.0 inches)78%very high
September Weather20°C (68°F)88 mm (3.4 inches)78%very high
October Weather14°C (57°F)102 mm (4.0 inches)82%high
November Weather5°C (41°F)100 mm (3.9 inches)89%moderate
December Weather2°C (36°F)104 mm (4.1 inches)86%low

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