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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). Expect a minimum of 15°C (59°F) and a maximum of 36°C (98°F), making for quite a range. Precipitation is notable, with around 115 mm (4.5 in) spread over 12 days, and you'll find the average humidity sitting comfortably at 80%.

July Temperature in New Haven

In July in New Haven, the average temperature is 26°C (79°F), with maximums reaching 36°C (98°F) and minimums dropping as low as 15°C (59°F). This makes it an ideal time to travel for those who enjoy warm weather and plenty of sunshine.

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 36°C (98°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec374149576875787672614642
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 total precipitation amount is 115 mm (4.5 in) over a span of 12 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 115 mm (4.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec9615013514411915711510412510889121
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 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
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 Weather3°C (37°F)96 mm (3.8 inches)87%moderate
February Weather5°C (41°F)150 mm (5.9 inches)86%moderate
March Weather9°C (49°F)135 mm (5.3 inches)86%high
April Weather14°C (57°F)144 mm (5.7 inches)82%very high
May Weather20°C (68°F)119 mm (4.7 inches)82%very high
June Weather24°C (75°F)157 mm (6.2 inches)83%extreme
July Weather26°C (79°F)115 mm (4.5 inches)80%extreme
August Weather25°C (77°F)104 mm (4.1 inches)74%very high
September Weather22°C (72°F)125 mm (4.9 inches)71%very high
October Weather16°C (61°F)108 mm (4.2 inches)78%high
November Weather8°C (46°F)89 mm (3.5 inches)88%moderate
December Weather6°C (42°F)121 mm (4.8 inches)88%moderate

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