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July Weather in New Haven, United States

Last updated: June 24, 2025

In New Haven, United States, the average temperature in July hovers around 26°C (79°F), with a minimum of 15°C (60°F) and a sweltering maximum of 39°C (103°F). Expect some rain, as the month sees about 102 mm (4.0 in) of precipitation spread over 11 days. Additionally, prepare for a humid atmosphere, with average humidity levels reaching 81%.

July Temperature in New Haven

In July in New Haven, the average temperature is 26°C (79°F), with maximums reaching up to 39°C (103°F) and minimums dropping as low as 15°C (60°F). It's wise to pack accordingly to enjoy your travels comfortably in this diverse climate.

July Weather in New Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in New Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Haven, July typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (103°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec333647556676797672584539
Data source: Temperature data for New Haven 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 New Haven

In New Haven in July, the precipitation amount is 102 mm (4.0 in) over the course of 11 days.

July Precipitation Trends in New Haven

The chart displays monthly precipitation patterns in New Haven, 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 New Haven, July typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec747912812816187102141521046751
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in New Haven

In New Haven in July, humidity is 81%. With an average temperature of 26°C (79°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor adventures stickier and more draining, yet still vibrant with life—perfect for exploring local culture, but you'll want to take frequent breaks and stay hydrated.

July Average Humidity in New Haven

This chart illustrates the average monthly humidity levels in New Haven, 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 New Haven is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in New Haven

In New Haven in July, 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 New Haven.

Maximum UV Index Levels in New Haven for July

The chart shows the monthly maximum UV Index (UVI) for New Haven 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 New Haven typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109753
Data source: New Haven 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 New Haven Compares to Other Months

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

This table compares monthly weather conditions in New Haven, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)74 mm (2.9 inches)82%moderate
February Weather2°C (36°F)79 mm (3.1 inches)80%moderate
March Weather8°C (47°F)128 mm (5.1 inches)80%high
April Weather13°C (55°F)128 mm (5.0 inches)80%very high
May Weather19°C (66°F)161 mm (6.3 inches)82%very high
June Weather24°C (76°F)87 mm (3.4 inches)83%extreme
July Weather26°C (79°F)102 mm (4.0 inches)81%extreme
August Weather24°C (76°F)141 mm (5.5 inches)80%very high
September Weather22°C (72°F)52 mm (2.0 inches)76%very high
October Weather15°C (59°F)104 mm (4.1 inches)76%high
November Weather7°C (45°F)67 mm (2.6 inches)85%moderate
December Weather4°C (39°F)51 mm (2.0 inches)86%moderate

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