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July Weather in St Johnsbury, United States

Last updated: June 24, 2025

In July, the average temperature in St Johnsbury, United States hovers around 20°C (69°F), offering a pleasant climate. Temperatures can range from a cool 8°C (46°F) to a warm 34°C (93°F), accommodating various preferences. Expect some rain, with precipitation hitting around 106 mm (4.2 in) over 14 days, and enjoy the moderate 75% humidity that adds to the region's character.

July Temperature in St Johnsbury

In July in St Johnsbury, the average temperature is 20°C (69°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 8°C (46°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while experiencing comfortable weather.

July Weather in St Johnsbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in St Johnsbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Johnsbury, July typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec182128425463686659483323
Data source: Temperature data for St Johnsbury 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.

July Precipitation in St Johnsbury

In St Johnsbury in July, the precipitation amount is 106 mm (4.2 in) over a period of 14 days.

July Precipitation Trends in St Johnsbury

The chart displays monthly precipitation patterns in St Johnsbury, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In St Johnsbury, July typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8078691109598106886413910385
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in St Johnsbury

In St Johnsbury in July, humidity is 75%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel a bit muggy and requiring frequent hydration breaks to stay comfortable while exploring.

July Average Humidity in St Johnsbury

This chart illustrates the average monthly humidity levels in St Johnsbury, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in St Johnsbury is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in St Johnsbury

In St Johnsbury in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in St Johnsbury.

Maximum UV Index Levels in St Johnsbury for July

The chart shows the monthly maximum UV Index (UVI) for St Johnsbury in July, 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 July, the maximum UV index in St Johnsbury typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: St Johnsbury July 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 July Weather in St Johnsbury Compares to Other Months

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

This table compares monthly weather conditions in St Johnsbury, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)80 mm (3.1 inches)91%low
February Weather-6°C (21°F)78 mm (3.1 inches)89%moderate
March Weather-2°C (29°F)69 mm (2.7 inches)85%moderate
April Weather5°C (42°F)110 mm (4.3 inches)84%very high
May Weather12°C (55°F)95 mm (3.7 inches)78%very high
June Weather17°C (63°F)98 mm (3.9 inches)72%very high
July Weather20°C (69°F)106 mm (4.2 inches)75%very high
August Weather19°C (67°F)88 mm (3.5 inches)74%very high
September Weather15°C (60°F)64 mm (2.5 inches)77%high
October Weather9°C (48°F)138 mm (5.5 inches)85%moderate
November Weather0°C (33°F)103 mm (4.0 inches)86%moderate
December Weather-5°C (23°F)85 mm (3.3 inches)85%low

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